U.S. patent application number 14/975022 was filed with the patent office on 2017-03-02 for optical image capturing system.
The applicant listed for this patent is ABILITY OPTO-ELECTRONICS TECHNOLOGY CO.LTD.. Invention is credited to YEONG-MING CHANG, NAI-YUAN TANG.
Application Number | 20170059822 14/975022 |
Document ID | / |
Family ID | 58104244 |
Filed Date | 2017-03-02 |
United States Patent
Application |
20170059822 |
Kind Code |
A1 |
TANG; NAI-YUAN ; et
al. |
March 2, 2017 |
OPTICAL IMAGE CAPTURING SYSTEM
Abstract
A six-piece optical lens for capturing image and a six-piece
optical module for capturing image are provided. In order from an
object side to an image side, the optical lens along the optical
axis includes a first lens with refractive power, a second lens
with refractive power, a third lens with refractive power, a fourth
lens with refractive power, a fifth lens with refractive power and
a sixth lens with refractive power. At least one of the image-side
surface and object-side surface of each of the six lens elements is
aspheric. The optical lens can increase aperture value and improve
the imagining quality for use in compact cameras.
Inventors: |
TANG; NAI-YUAN; (TAICHUNG
CITY, TW) ; CHANG; YEONG-MING; (TAICHUNG CITY,
TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ABILITY OPTO-ELECTRONICS TECHNOLOGY CO.LTD. |
TAICHUNG CITY |
|
TW |
|
|
Family ID: |
58104244 |
Appl. No.: |
14/975022 |
Filed: |
December 18, 2015 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02B 13/06 20130101;
G02B 27/646 20130101 |
International
Class: |
G02B 13/00 20060101
G02B013/00; G02B 7/04 20060101 G02B007/04; G02B 27/64 20060101
G02B027/64; G02B 9/62 20060101 G02B009/62 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 25, 2015 |
TW |
104127763 |
Claims
1. An optical image capturing system, from an object side to an
image side, comprising: a first lens element with refractive power;
a second lens element with refractive power; a third lens element
with refractive power; a fourth lens element with refractive power;
a fifth lens element with refractive power; a sixth lens element
with refractive power; and an image plane; wherein the optical
image capturing system consists of six lens elements with
refractive power, a maximum height for image formation on the image
plane perpendicular to the optical axis in the optical image
capturing system is denoted by HOI, at least one of the first
through sixth lens elements has positive refractive power, an
object-side surface and an image-side surface of the sixth lens
element are aspheric, focal lengths of the first through sixth lens
elements are f1, f2, f3, f4, f5 and f6 respectively, a focal length
of the optical image capturing system is f, an entrance pupil
diameter of the optical image capturing system is HEP, a distance
on an optical axis from an axial point on an object-side surface of
the first lens element to an axial point on the image plane is HOS,
thicknesses in parallel with an optical axis of the first through
sixth lens elements at height 1/2 HEP respectively are ETP1, ETP2,
ETP3, ETP4, ETP5 and ETP6, a sum of ETP1 to ETP6 described above is
SETP, thicknesses of the first through sixth lens elements on the
optical axis respectively are TP1, TP2, TP3, TP4, TP5 and TP6, a
sum of TP1 to TP6 described above is STP, and the following
relations are satisfied: 1.2.ltoreq.f/HEP.ltoreq.10.0 and
0.5.ltoreq.SETP/STP<1.
2. The optical image capturing system of claim 1, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the object-side surface of the first lens
element at height 1/2 HEP to the image plane is ETL, a horizontal
distance in parallel with the optical axis from a coordinate point
on the object-side surface of the first lens element at height 1/2
HEP to a coordinate point on the image-side surface of the sixth
lens element at height 1/2 HEP is EIN, and the following relation
is satisfied: 0.2.ltoreq.EIN/ETL<1.
3. The optical image capturing system of claim 2, wherein the
thicknesses in parallel with the optical axis of the first through
sixth lens elements at height 1/2 HEP respectively are ETP1, ETP2,
ETP3, ETP4, ETP5 and ETP6, the sum of ETP1 to ETP6 described above
is SETP, and the following relation is satisfied:
0.3.ltoreq.SETP/EIN<1.
4. The optical image capturing system of claim 1, wherein the
optical image capturing system comprises a light filtration
element, the light filtration element is located between the sixth
lens element and the image plane, a distance in parallel with the
optical axis from a coordinate point on the image-side surface of
the sixth lens element at height 1/2 HEP to the light filtration
element is EIR, a distance in parallel with the optical axis from
an axial point on the image-side surface of the sixth lens element
to the light filtration element is PIP, and the following relation
is satisfied: 0.1.ltoreq.EIR/PIR.ltoreq.1.1.
5. The optical image capturing system of claim 1, wherein an
object-side surface or an image-side surface of at least one of the
six lens elements has at least one inflection point.
6. The optical image capturing system of claim 1, wherein contrast
transfer rates of modulation transfer with space frequencies of 55
cycles/mm (MTF values) of a visible light at the optical axis on
the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by
MTFE0, MTFE3 and MTFE7, and the following relations are satisfied:
MTFE0.gtoreq.0.2, MTFE3.gtoreq.0.01 and MTFE7.gtoreq.0.01.
7. The optical image capturing system of claim 1, wherein a half of
maximum view angle of the optical image capturing system is HAF,
and the following relation is satisfied: 0.4.ltoreq.|
tan(HAF)|.ltoreq.6.0.
8. The optical image capturing system of claim 1, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the image plane is EBL, a horizontal
distance in parallel with the optical axis from an axial point on
the image-side surface of the sixth lens element to the image plane
is BL, and the following relation is satisfied:
0.1.ltoreq.EBL/BL<1.1.
9. The optical image capturing system of claim 1, further
comprising an aperture stop, a distance from the aperture stop to
the image plane on the optical axis is InS, an image sensing device
is disposed on the image plane, and the following relations are
satisfied: 0.1.ltoreq.InS/HOS.ltoreq.1.1 and
0.ltoreq.HIF/HOI.ltoreq.0.9.
10. An optical image capturing system, from an object side to an
image side, comprising: a first lens element with negative
refractive power; a second lens element with refractive power; a
third lens element with refractive power; a fourth lens element
with refractive power; a fifth lens element with refractive power;
a sixth lens element with refractive power; and an image plane;
wherein the optical image capturing system consists of six lens
elements with refractive power and at least one of the six lens
elements is made of glass material, a maximum height for image
formation on the image plane perpendicular to the optical axis in
the optical image capturing system is denoted by HOI, at least one
of the second through sixth lens elements has positive refractive
power, focal lengths of the first through sixth lens elements are
f1, f2, f3, f4, f5 and f6 respectively, a focal length of the
optical image capturing system is f, an entrance pupil diameter of
the optical image capturing system is HEP, a distance on an optical
axis from an axial point on an object-side surface of the first
lens element to an axial point on the image plane is HOS, a
horizontal distance in parallel with the optical axis from a
coordinate point on the object-side surface of the first lens
element at height 1/2 HEP to the image plane is ETL, a horizontal
distance in parallel with the optical axis from a coordinate point
on the object-side surface of the first lens element at height 1/2
HEP to a coordinate point on the image-side surface of the sixth
lens element at height 1/2 HEP is EIN, and the following relations
are satisfied: 1.2.ltoreq.f/HEP.ltoreq.10.0 and
0.2.ltoreq.EIN/ETL<1.
11. The optical image capturing system of claim 10, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the image-side surface of the fifth lens
element at height 1/2 HEP to a coordinate point on the object-side
surface of the sixth lens element at height 1/2 HEP is ED56, a
distance from the fifth lens element to the sixth lens element on
the optical axis is IN56, and the following relation is satisfied:
0<ED56/IN56.ltoreq.50.
12. The optical image capturing system of claim 10, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the image-side surface of the first lens
element at height 1/2 HEP to a coordinate point on the object-side
surface of the second lens element at height 1/2 HEP is ED12, a
distance from the first lens element to the second lens element on
the optical axis is IN12, and the following relation is satisfied:
0<ED12/IN12<10.
13. The optical image capturing system of claim 10, wherein a
thickness in parallel with the optical axis of the second lens
element at height 1/2 HEP is ETP2, a thickness of the second lens
element on the optical axis is TP2, and the following relation is
satisfied: 0<ETP2/TP2.ltoreq.3.
14. The optical image capturing system of claim 10, wherein a
thickness in parallel with the optical axis of the fifth lens
element at height 1/2 HEP is ETP5, a thickness of the fifth lens
element on the optical axis is TP5, and the following relation is
satisfied: 0<ETP5/TP5.ltoreq.0.3.
15. The optical image capturing system of claim 10, wherein a
thickness in parallel with the optical axis of the sixth lens
element at height 1/2 HEP is ETP6, a thickness of the sixth lens
element on the optical axis is TP6, and the following relation is
satisfied: 0<ETP6/TP6.ltoreq.5.
16. The optical image capturing system of claim 10, wherein a
distance from the first lens element to the second lens element on
the optical axis is IN12, and the following relation is satisfied:
0<IN12/f.ltoreq.60.
17. The optical image capturing system of claim 10, wherein
contrast transfer rates of modulation transfer with spatial
frequencies of 55 cycles/mm of an infrared operation wavelength 850
nm at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are
respectively denoted by MTFI0, MTFI3 and MTFI7, and the following
relations are satisfied: MTFI0.gtoreq.0.01, MTFI3.gtoreq.0.01 and
MTFI7.gtoreq.0.01.
18. The optical image capturing system of claim 10, wherein
contrast transfer rates of modulation transfer with space
frequencies of 110 cycles/mm of a visible light at the optical axis
on the image plane, 0.3 HOI and 0.7 HOI are respectively denoted by
MTFQ0, MTFQ3 and MTFQ7, and the following relations are satisfied:
MTFQ0.gtoreq.0.2, MTFQ3.gtoreq.0.01 and MTFQ7.gtoreq.0.01.
19. The optical image capturing system of claim 10, wherein at
least one of the first, the second, the third, the fourth, the
fifth and the sixth lens elements is a light filtration element
with a wavelength of less than 500 nm.
20. An optical image capturing system, from an object side to an
image side, comprising: a first lens element with negative
refractive power; a second lens element with refractive power; a
third lens element with refractive power; a fourth lens element
with refractive power; a fifth lens element with positive
refractive power; a sixth lens element with refractive power, and
an image plane; wherein the optical image capturing system consists
of six lens elements with refractive power and at least two of the
six lens elements are made of glass material, a maximum height for
image formation on the image plane perpendicular to the optical
axis in the optical image capturing system is denoted by HOI, at
least one of the first through sixth lens elements has at least one
inflection point on at least one surface thereof, an object-side
surface and an image-side surface of at least one of the six lens
elements are aspheric, focal lengths of the first through sixth
lens elements are f1, f2, f3, f4, f5 and f6 respectively, a focal
length of the optical image capturing system is f, an entrance
pupil diameter of the optical image capturing system is HEP, a half
of maximum view angle of the optical image capturing system is HAF,
a distance on an optical axis from an axial point on an object-side
surface of the first lens element to an axial point on the image
plane is HOS, a horizontal distance in parallel with the optical
axis from a coordinate point on the object-side surface of the
first lens element at height 1/2 HEP to the image plane is ETL, a
horizontal distance in parallel with the optical axis from a
coordinate point on the object-side surface of the first lens
element at height 1/2 HEP to a coordinate point on the image-side
surface of the sixth lens element at height 1/2 HEP is EIN, and the
following relations are satisfied: 1.2.ltoreq.f/HEP.ltoreq.10.0,
0.4.ltoreq.| tan(HAF)|.ltoreq.6.0, and 0.2.ltoreq.EIN/ETL<1.
21. The optical image capturing system of claim 20, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the image plane is EBL, a horizontal
distance in parallel with the optical axis from an axial point on
the image-side surface of the sixth lens element to the image plane
is BL, and the following relation is satisfied:
0.1.ltoreq.EBL/BL.ltoreq.1.1.
22. The optical image capturing system of claim 21, wherein a
horizontal distance in parallel with the optical axis from a
coordinate point on the image-side surface of the fifth lens
element at height 1/2 HEP to a coordinate point on the object-side
surface of the sixth lens element at height 1/2 HEP is ED56, a
distance from the fifth lens element to the sixth lens element on
the optical axis is IN56, and the following relation is satisfied:
0<ED56/IN56.ltoreq.50.
23. The optical image capturing system of claim 20, wherein a
distance from the fifth lens element to the sixth lens element on
the optical axis is IN56, and the following relation is satisfied:
0<IN56/f.ltoreq.5.0.
24. The optical image capturing system of claim 23, wherein the
optical image capturing system satisfies the following relation: 0
mm<HOS.ltoreq.50 mm.
25. The optical image capturing system of claim 23, further
comprising an aperture stop, an image sensing device and a driving
module, the image sensing device is disposed on the image plane, a
distance from the aperture stop to the image plane on the optical
axis is InS, the driving module and the six lens elements couple to
each other and shifts are produced for the six lens elements, and
the following relation is satisfied: 0.1.ltoreq.InS/HOS.ltoreq.1.1.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of Taiwan Patent
Application No. 104127763, filed on Aug. 25, 2015, in the Taiwan
Intellectual Property Office, the disclosure of which is
incorporated herein in its entirety by reference.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present disclosure relates to an optical image capturing
system, and more particularly to a compact optical image capturing
system which can be applied to electronic products.
[0004] 2. Description of the Related Art
[0005] In recent years, with the rise of portable electronic
devices having camera functionalities, the demand for an optical
image capturing system is raised gradually. The image sensing
device of ordinary photographing camera is commonly selected from
charge coupled device (CCD) or complementary metal-oxide
semiconductor sensor (CMOS Sensor). In addition, as advanced
semiconductor manufacturing technology enables the minimization of
pixel size of the image sensing device, the development of the
optical image capturing system directs towards the field of high
pixels. Therefore, the requirement for high imaging quality is
rapidly raised.
[0006] The traditional optical image capturing system of a portable
electronic device comes with different designs, including a
four-lens or a five-lens design. However, the requirement for the
higher pixels and the requirement for a large aperture of an end
user, like functionalities of micro filming and night view, or the
requirement of wide view angle of the portable electronic device
have been raised. But the optical image capturing system with the
large aperture design often produces more aberration resulting in
the deterioration of quality in peripherical image formation and
difficulties of manufacturing, and the optical image capturing
system with wide view angle design increases distortion rate in
image formation, thus the optical image capturing system in prior
arts cannot meet the requirement of the higher order camera lens
module.
[0007] Therefore, how to effectively increase quantity of incoming
light and view angle of the optical lenses, not only further
improves total pixels and imaging quality for the image formation,
but also considers the equity design of the miniaturized optical
lenses, becomes a quite important issue.
SUMMARY OF THE INVENTION
[0008] The aspect of embodiment of the present disclosure directs
to an optical image capturing system and an optical image capturing
lens which use combination of refractive powers, convex and concave
surfaces of six-piece optical lenses (the convex or concave surface
in the disclosure denotes the geometrical shape of an image-side
surface or an object-side surface of each lens on an optical axis)
to increase the quantity of incoming light of the optical image
capturing system and the view angle of the optical lenses, and to
improve total pixels and imaging quality for image formation, so as
to be applied to minimized electronic products.
[0009] The term and its definition to the lens element parameter in
the embodiment of the present invention are shown as below for
further reference.
[0010] The lens element parameter related to a length or a height
in the lens element
A maximum height for image formation of the optical image capturing
system is denoted by HOI. A height of the optical image capturing
system is denoted by HOS. A distance from the object-side surface
of the first lens element to the image-side surface of the sixth
lens element is denoted by InTL. A distance from an aperture stop
(aperture) to an image plane is denoted by InS. A distance from the
first lens element to the second lens element is denoted by In12
(instance). A central thickness of the first lens element of the
optical image capturing system on the optical axis is denoted by
TP1 (instance).
[0011] The lens element parameter related to a material in the lens
element
An Abbe number of the first lens element in the optical image
capturing system is denoted by NA1 (instance). A refractive index
of the first lens element is denoted by Nd1 (instance).
[0012] The lens element parameter related to a view angle in the
lens element
A view angle is denoted by AF. Half of the view angle is denoted by
HAF. A major light angle is denoted by MRA.
[0013] The lens element parameter related to exit/entrance pupil in
the lens element
An entrance pupil diameter of the optical image capturing system is
denoted by HEP. A maximum effective half diameter (EHD) of any
surface of a single lens element refers to a perpendicular height
between an intersection point on the surface of the lens element
where the incident light with the maximum view angle in the optical
system passes through the outmost edge of the entrance pupil and
the optical axis. For example, the maximum effective half diameter
of the object-side surface of the first lens element is denoted by
EHD 11. The maximum effective half diameter of the image-side
surface of the first lens element is denoted by EHD 12. The maximum
effective half diameter of the object-side surface of the second
lens element is denoted by EHD 21. The maximum effective half
diameter of the image-side surface of the second lens element is
denoted by EHD 22. The maximum effective half diameters of any
surfaces of other lens elements in the optical image capturing
system are denoted in the similar way.
[0014] The lens element parameter related to a depth of the lens
element shape
A distance in parallel with an optical axis from a maximum
effective diameter position to an axial point on the object-side
surface of the sixth lens element is denoted by InRS61 (instance).
A distance in parallel with an optical axis from a maximum
effective diameter position to an axial point on the image-side
surface of the sixth lens element is denoted by InRS62
(instance).
[0015] The lens element parameter related to the lens element
shape
A critical point C is a tangent point on a surface of a specific
lens element, and the tangent point is tangent to a plane
perpendicular to the optical axis and the tangent point cannot be a
crossover point on the optical axis. To follow the past, a distance
perpendicular to the optical axis between a critical point C51 on
the object-side surface of the fifth lens element and the optical
axis is HVT51 (instance). A distance perpendicular to the optical
axis between a critical point C52 on the image-side surface of the
fifth lens element and the optical axis is HVT52 (instance). A
distance perpendicular to the optical axis between a critical point
C61 on the object-side surface of the sixth lens element and the
optical axis is HVT61 (instance). A distance perpendicular to the
optical axis between a critical point C62 on the image-side surface
of the sixth lens element and the optical axis is HVT62 (instance).
Distances perpendicular to the optical axis between critical points
on the object-side surfaces or the image-side surfaces of other
lens elements and the optical axis are denoted in the similar way
described above.
[0016] The object-side surface of the sixth lens element has one
inflection point IF611 which is nearest to the optical axis, and
the sinkage value of the inflection point IF611 is denoted by
SGI611 (instance). SGI611 is a horizontal shift distance in
parallel with the optical axis from an axial point on the
object-side surface of the sixth lens element to the inflection
point which is nearest to the optical axis on the object-side
surface of the sixth lens element. A distance perpendicular to the
optical axis between the inflection point IF611 and the optical
axis is HIF611 (instance). The image-side surface of the sixth lens
element has one inflection point IF621 which is nearest to the
optical axis and the sinkage value of the inflection point IF621 is
denoted by SGI621 (instance). SGI621 is a horizontal shift distance
in parallel with the optical axis from an axial point on the
image-side surface of the sixth lens element to the inflection
point which is nearest to the optical axis on the image-side
surface of the sixth lens element. A distance perpendicular to the
optical axis between the inflection point IF621 and the optical
axis is HIF621 (instance).
[0017] The object-side surface of the sixth lens element has one
inflection point IF612 which is the second nearest to the optical
axis and the sinkage value of the inflection point IF612 is denoted
by SGI612 (instance). SGI612 is a horizontal shift distance in
parallel with the optical axis from an axial point on the
object-side surface of the sixth lens element to the inflection
point which is the second nearest to the optical axis on the
object-side surface of the sixth lens element. A distance
perpendicular to the optical axis between the inflection point
IF612 and the optical axis is HIF612 (instance). The image-side
surface of the sixth lens element has one inflection point IF622
which is the second nearest to the optical axis and the sinkage
value of the inflection point IF622 is denoted by SGI622
(instance). SGI622 is a horizontal shift distance in parallel with
the optical axis from an axial point on the image-side surface of
the sixth lens element to the inflection point which is the second
nearest to the optical axis on the image-side surface of the sixth
lens element. A distance perpendicular to the optical axis between
the inflection point IF622 and the optical axis is HIF622
(instance).
[0018] The object-side surface of the sixth lens element has one
inflection point IF613 which is the third nearest to the optical
axis and the sinkage value of the inflection point IF613 is denoted
by SGI613 (instance). SGI613 is a horizontal shift distance in
parallel with the optical axis from an axial point on the
object-side surface of the sixth lens element to the inflection
point which is the third nearest to the optical axis on the
object-side surface of the sixth lens element. A distance
perpendicular to the optical axis between the inflection point
IF613 and the optical axis is HIF613 (instance). The image-side
surface of the sixth lens element has one inflection point IF623
which is the third nearest to the optical axis and the sinkage
value of the inflection point IF623 is denoted by SGI623
(instance). SGI623 is a horizontal shift distance in parallel with
the optical axis from an axial point on the image-side surface of
the sixth lens element to the inflection point which is the third
nearest to the optical axis on the image-side surface of the sixth
lens element. A distance perpendicular to the optical axis between
the inflection point IF623 and the optical axis is HIF623
(instance).
[0019] The object-side surface of the sixth lens element has one
inflection point IF614 which is the fourth nearest to the optical
axis and the sinkage value of the inflection point IF614 is denoted
by SGI614 (instance). SGI614 is a horizontal shift distance in
parallel with the optical axis from an axial point on the
object-side surface of the sixth lens element to the inflection
point which is the fourth nearest to the optical axis on the
object-side surface of the sixth lens element. A distance
perpendicular to the optical axis between the inflection point
IF614 and the optical axis is HIF614 (instance). The image-side
surface of the sixth lens element has one inflection point IF624
which is the fourth nearest to the optical axis and the sinkage
value of the inflection point IF624 is denoted by SGI624
(instance). SGI624 is a horizontal shift distance in parallel with
the optical axis from an axial point on the image-side surface of
the sixth lens element to the inflection point which is the fourth
nearest to the optical axis on the image-side surface of the sixth
lens element. A distance perpendicular to the optical axis between
the inflection point IF624 and the optical axis is HIF624
(instance).
[0020] The inflection points on the object-side surfaces or the
image-side surfaces of the other lens elements and the distances
perpendicular to the optical axis thereof or the sinkage values
thereof are denoted in the similar way described above.
[0021] The lens element parameter related to an aberration Optical
distortion for image formation in the optical image capturing
system is denoted by ODT. TV distortion for image formation in the
optical image capturing system is denoted by TDT. Further, the
range of the aberration offset for the view of image formation may
be limited to 50%-100%. An offset of the spherical aberration is
denoted by DFS. An offset of the coma aberration is denoted by
DFC.
[0022] The vertical coordinate axis of the characteristic diagram
of modulation transfer function represents a contrast transfer rate
(values are from 0 to 1). The horizontal coordinate axis represents
a spatial frequency (cycles/mm; lp/mm; line pairs per mm).
Theoretically, an ideal image capturing system can 100% show the
line contrast of a photographed object. However, the values of the
contrast transfer rate at the vertical coordinate axis are smaller
than 1 in the actual image capturing system. The transfer rate of
its comparison value is less than a vertical axis. In addition,
comparing to the central region, it is generally more difficult to
achieve a fine degree of recovery in the edge region of image
capturing. The contrast transfer rates (MTF values) with spatial
frequencies of 55 cycles/m at the optical axis, 0.3 field of view
and 0.7 field of view of a visible spectrum on the image plane are
respectively denoted by MTFE0, MTFE3 and MTFE7. The contrast
transfer rates (MTF values) with spatial frequencies of 110
cycles/m at the optical axis, 0.3 field of view and 0.7 field of
view on the image plane are respectively denoted by MTFQ0, MTFQ3
and MTFQ7. The contrast transfer rates (MTF values) with spatial
frequencies of 220 cycles/m at the optical axis, 0.3 field of view
and 0.7 field of view on the image plane are respectively denoted
by MTFH0, MTFH3 and MTFH7. The contrast transfer rates (MTF values)
with spatial frequencies of 440 cycles/m at the optical axis, 0.3
field of view and 0.7 field of view on the image plane are
respectively denoted by MTF0, MTF3 and MTF7. The three fields of
view described above are representative to the centre, the internal
field of view and the external field of view of the lens elements.
Thus, they may be used to evaluate whether the performance of a
specific optical image capturing system is excellent. The design of
the optical image capturing system of the present invention mainly
corresponds to a pixel size in which a sensing device below 1.12
micrometers is includes. Therefore, the quarter spatial
frequencies, the half spatial frequencies (half frequencies) and
the full spatial frequencies (full frequencies) of the
characteristic diagram of modulation transfer function respectively
are at least 110 cycles/mm, 220 cycles/mm and 440 cycles/mm.
[0023] If an optical image capturing system needs to satisfy with
the images aimed to infrared spectrum, such as the requirement for
night vision with lower light source, the used wavelength may be
850 nm or 800 nm. As the main function is to recognize shape of an
object formed in monochrome and shade, the high resolution is
unnecessary, and thus, a spatial frequency, which is less than 100
cycles/mm, is used to evaluate the functionality of the optical
image capturing system, when the optical image capturing system is
applied to the infrared spectrum. When the foregoing wavelength 850
nm is applied to focus on the image plane, the contrast transfer
rates (MTF values) with a spatial frequency of 55 cycles/mm at the
optical axis, 0.3 field of view and 0.7 field of view on the image
plane are respectively denoted by MTFI0, MTFI3 and MTFI7. However,
the infrared wavelength of 850 nm or 800 nm may be hugely different
to wavelength of the regular visible light wavelength, and thus, it
is hard to design an optical image capturing system which has to
focus on the visible light and the infrared light (dual-mode)
simultaneously while achieve a certain function respectively.
[0024] The disclosure provides an optical image capturing system,
which is able to focus on the visible light and the infrared light
(dual-mode) simultaneously while achieve a certain function
respectively, and an object-side surface or an image-side surface
of the fourth lens element has inflection points, such that the
angle of incidence from each field of view to the fourth lens
element can be adjusted effectively and the optical distortion and
the TV distortion can be corrected as well. Besides, the surfaces
of the fourth lens element may have a better optical path adjusting
ability to acquire better imaging quality.
[0025] The disclosure provides an optical image capturing system,
in order from an object side to an image side, including a first,
second, third, fourth, fifth, sixth lens elements and an image
plane. The first lens element has refractive power. An object-side
surface and an image-side surface of the sixth lens element are
aspheric. Focal lengths of the first through sixth lens elements
are f1, 2, f2, f4, f5 and f6 respectively. A focal length of the
optical image capturing system is f. An entrance pupil diameter of
the optical image capturing system is HEP. A distance from an
object-side surface of the first lens element to the image plane is
HOS. Thicknesses in parallel with an optical axis of the first
through sixth lens elements at height 1/2 HEP respectively are
ETP1, ETP2, ETP3, ETP4, ETP5 and ETP6. A sum of ETP1 to ETP6
described above is SETP. Thicknesses of the first through sixth
lens elements on the optical axis respectively are TP1, TP2, TP3,
TP4, TP5 and TP6. A sum of TP1 to TP6 described above is STP. The
following relations are satisfied: 1.2.ltoreq.f/HEP.ltoreq.10.0 and
0.5.ltoreq.SETP/STP<1.
[0026] The disclosure provides another optical image capturing
system, in order from an object side to an image side, including a
first, second, third, fourth, fifth, sixth lens elements and an
image plane. The first lens element has negative refractive power,
and the position near the optical axis on an object-side surface of
the first lens element may be a convex surface. The second lens
element has refractive power. The third lens element has refractive
power. The fourth lens element has refractive power. The fifth lens
element has refractive power. The sixth lens element has refractive
power, and an object-side surface and an image-side surface of the
sixth lens element are aspheric. A maximum height for image
formation on the image plane perpendicular to the optical axis in
the optical image capturing system is denoted by HOI, and at least
one lens element among the first through the sixth lens elements is
made of glass material. At least one of the second through sixth
lens elements has positive refractive power. Focal lengths of the
first through sixth lens elements are f1, f2, f3, f4, f5 and f6
respectively. A focal length of the optical image capturing system
is f. An entrance pupil diameter of the optical image capturing
system is HEP. A distance from an object-side surface of the first
lens element to the image plane is HOS. A horizontal distance in
parallel with the optical axis from a coordinate point on the
object-side surface of the first lens element at height 1/2 HEP to
the image plane is ETL. A horizontal distance in parallel with the
optical axis from a coordinate point on the object-side surface of
the first lens element at height 1/2 HEP to a coordinate point on
the image-side surface of the sixth lens element at height 1/2 HEP
is EIN. The following relations are satisfied:
1.2.ltoreq.f/HEP.ltoreq.10.0, HOI>3.0 mm and
0.2.ltoreq.EIN/ETL<1.
[0027] The disclosure provides another optical image capturing
system, in order from an object side to an image side, including a
first, second, third, fourth, fifth, sixth lens elements and an
image plane. Wherein the optical image capturing system consists of
six lens elements with refractive power, a maximum height for image
formation on the image plane perpendicular to the optical axis in
the optical image capturing system is denoted by HOI, and at least
two lens elements among the first through the sixth lens elements
are made of glass material. An object-side surface and an
image-side surface of at least one lens element of the six lens
elements are aspheric, and at least one lens element among the
first through sixth lens elements has at least one inflection point
on at least one surface thereof. The first lens element has
negative refractive power. The second lens element has refractive
power. The third lens element has refractive power. The fourth lens
element has refractive power. The fifth lens element has positive
refractive power. The sixth lens element has refractive power.
Focal lengths of the first through sixth lens elements are f1, f2,
f3, f4, f5 and f6 respectively. A focal length of the optical image
capturing system is f. An entrance pupil diameter of the optical
image capturing system is HEP. A half of maximum view angle of the
optical image capturing system is HAF. A distance from an
object-side surface of the first lens element to the image plane is
HOS. A horizontal distance in parallel with the optical axis from a
coordinate point on the object-side surface of the first lens
element at height 1/2 HEP to the image plane is ETL. A horizontal
distance in parallel with the optical axis from a coordinate point
on the object-side surface of the first lens element at height 1/2
HEP to a coordinate point on the image-side surface of the sixth
lens element at height 1/2 HEP is EIN. The following relations are
satisfied: 1.2.ltoreq.f/HEP.ltoreq.3.0, 0.4.ltoreq.|
tan(HAF)|.ltoreq.6.0, HOI>3.0 mm and
0.2.ltoreq.EIN/ETL<1.
[0028] A thickness of a single lens element at height of 1/2
entrance pupil diameter (HEP) particularly affects the corrected
aberration of common area of each field of view of light and the
capability of correcting optical path difference between each field
of view of light in the scope of 1/2 entrance pupil diameter (HEP).
The capability of aberration correction is enhanced if the
thickness becomes greater, but the difficulty for manufacturing is
also increased at the same time. Therefore, it is necessary to
control the thickness of a single lens element at height of 1/2
entrance pupil diameter (HEP), in particular to control the ratio
relation (ETP/TP) of the thickness (ETP) of the lens element at
height of 1/2 entrance pupil diameter (HEP) to the thickness (TP)
of the lens element to which the surface belongs on the optical
axis. For example, the thickness of the first lens element at
height of 1/2 entrance pupil diameter (HEP) is denoted by ETP1. The
thickness of the second lens element at height of 1/2 entrance
pupil diameter (HEP) is denoted by ETP2. The thicknesses of other
lens elements are denoted in the similar way. A sum of ETP1 to ETP6
described above is SETP. The embodiments of the present invention
may satisfy the following relation: 0.3.ltoreq.SETP/EIN<1.
[0029] In order to enhance the capability of aberration correction
and reduce the difficulty for manufacturing at the same time, it is
particularly necessary to control the ratio relation (ETP/TP) of
the thickness (ETP) of the lens element at height of 1/2 entrance
pupil diameter (HEP) to the thickness (TP) of the lens element on
the optical axis lens. For example, the thickness of the first lens
element at height of 1/2 entrance pupil diameter (HEP) is denoted
by ETP1. The thickness of the first lens element on the optical
axis is TP1. The ratio between both of them is ETP1/TP1. The
thickness of the second lens element at height of 1/2 entrance
pupil diameter (HEP) is denoted by ETP2. The thickness of the
second lens element on the optical axis is TP2. The ratio between
both of them is ETP2/TP2. The ratio relations of the thicknesses of
other lens element in the optical image capturing system at height
of 1/2 entrance pupil diameter (HEP) to the thicknesses (TP) of the
lens elements on the optical axis lens are denoted in the similar
way. The embodiments of the present invention may satisfy the
following relation: 0.2.ltoreq.ETP/TP.ltoreq.3.
[0030] A horizontal distance between two adjacent lens elements at
height of 1/2 entrance pupil diameter (HEP) is denoted by ED. The
horizontal distance (ED) described above is in parallel with the
optical axis of the optical image capturing system and particularly
affects the corrected aberration of common area of each field of
view of light and the capability of correcting optical path
difference between each field of view of light at the position of
1/2 entrance pupil diameter (HEP). The capability of aberration
correction may be enhanced if the horizontal distance becomes
greater, but the difficulty for manufacturing is also increased and
the degree of `miniaturization` to the length of the optical image
capturing system is restricted. Thus, it is essential to control
the horizontal distance (ED) between two specific adjacent lens
elements at height of 1/2 entrance pupil diameter (HEP).
[0031] In order to enhance the capability of aberration correction
and reduce the difficulty for `miniaturization` to the length of
the optical image capturing system at the same time, it is
particularly necessary to control the ratio relation (ED/IN) of the
horizontal distance (ED) between the two adjacent lens elements at
height of 1/2 entrance pupil diameter (HEP) to the horizontal
distance (IN) between the two adjacent lens elements on the optical
axis. For example, the horizontal distance between the first lens
element and the second lens element at height of 1/2 entrance pupil
diameter (HEP) is denoted by ED12. The horizontal distance between
the first lens element and the second lens element on the optical
axis is IN12. The ratio between both of them is ED12/IN12. The
horizontal distance between the second lens element and the third
lens element at height of 1/2 entrance pupil diameter (HEP) is
denoted by ED23. The horizontal distance between the second lens
element and the third lens element on the optical axis is IN23. The
ratio between both of them is ED23/IN23. The ratio relations of the
horizontal distances between other two adjacent lens elements in
the optical image capturing system at height of 1/2 entrance pupil
diameter (HEP) to the horizontal distances between the two adjacent
lens elements on the optical axis are denoted in the similar
way.
[0032] A horizontal distance in parallel with the optical axis from
a coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the image plane is EBL. A horizontal
distance in parallel with the optical axis from an axial point on
the image-side surface of the sixth lens element to the image plane
is BL. The embodiments of the present invention enhance the
capability of aberration correction and reserve space for
accommodating other optical elements. The following relation may be
satisfied: 0.2.ltoreq.EBL/BL<1.1. The optical image capturing
system may further include a light filtration element. The light
filtration element is located between the sixth lens element and
the image plane. A distance in parallel with the optical axis from
a coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the light filtration element is EIR. A
distance in parallel with the optical axis from an axial point on
the image-side surface of the sixth lens element to the light
filtration element is PIR. The embodiments of the present invention
may satisfy the following relation:
0.1.ltoreq.EIR/PIR.ltoreq.1.1.
[0033] The height of optical system (HOS) may be reduced to achieve
the minimization of the optical image capturing system when the
absolute value of f1 is larger than f6 (|f1|>f6).
[0034] When |f2|+|f3|+|f4|+|f5| and |f1|+|f6| are satisfied with
above relations, at least one of the second through fifth lens
elements may have weak positive refractive power or weak negative
refractive power. The weak refractive power indicates that an
absolute value of the focal length of a specific lens element is
greater than 10. When at least one of the second through fifth lens
elements has the weak positive refractive power, the positive
refractive power of the first lens element can be shared, such that
the unnecessary aberration will not appear too early. On the
contrary, when at least one of the second through fifth lens
elements has the weak negative refractive power, the aberration of
the optical image capturing system can be corrected and fine
tuned.
[0035] The sixth lens element may have negative refractive power
and a concave image-side surface. Hereby, the back focal length is
reduced for keeping the miniaturization, to miniaturize the lens
element effectively. In addition, at least one of the object-side
surface and the image-side surface of the sixth lens element may
have at least one inflection point, such that the angle of incident
with incoming light from an off-axis field of view can be
suppressed effectively and the aberration in the off-axis field of
view can be corrected further.
BRIEF DESCRIPTION OF THE DRAWINGS
[0036] The detailed structure, operating principle and effects of
the present disclosure will now be described in more details
hereinafter with reference to the accompanying drawings that show
various embodiments of the present disclosure as follows.
[0037] FIG. 1A is a schematic view of the optical image capturing
system according to the first embodiment of the present
application.
[0038] FIG. 1B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the first embodiment of the present application.
[0039] FIG. 1C is a characteristic diagram of modulation transfer
of a visible light according to the first embodiment of the present
application.
[0040] FIG. 1D is a characteristic diagram of modulation transfer
of infrared rays according to the first embodiment of the present
application.
[0041] FIG. 2A is a schematic view of the optical image capturing
system according to the second embodiment of the present
application.
[0042] FIG. 2B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the second embodiment of the present application.
[0043] FIG. 2C is a characteristic diagram of modulation transfer
of a visible light according to the second embodiment of the
present application.
[0044] FIG. 2D is a characteristic diagram of modulation transfer
of infrared rays according to the second embodiment of the present
application.
[0045] FIG. 3A is a schematic view of the optical image capturing
system according to the third embodiment of the present
application.
[0046] FIG. 3B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the third embodiment of the present application.
[0047] FIG. 3C is a characteristic diagram of modulation transfer
of a visible light according to the third embodiment of the present
application.
[0048] FIG. 3D is a characteristic diagram of modulation transfer
of infrared rays according to the third embodiment of the present
application.
[0049] FIG. 4A is a schematic view of the optical image capturing
system according to the fourth embodiment of the present
application.
[0050] FIG. 4B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the fourth embodiment of the present application.
[0051] FIG. 4C is a characteristic diagram of modulation transfer
of a visible light according to the fourth embodiment of the
present application.
[0052] FIG. 4D is a characteristic diagram of modulation transfer
of infrared rays according to the fourth embodiment of the present
application.
[0053] FIG. 5A is a schematic view of the optical image capturing
system according to the fifth embodiment of the present
application.
[0054] FIG. 5B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the fifth embodiment of the present application.
[0055] FIG. 5C is a characteristic diagram of modulation transfer
of a visible light according to the fifth embodiment of the present
application.
[0056] FIG. 5D is a characteristic diagram of modulation transfer
of infrared rays according to the fifth embodiment of the present
application.
[0057] FIG. 6A is a schematic view of the optical image capturing
system according to the sixth embodiment of the present
application.
[0058] FIG. 6B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the sixth embodiment of the present application.
[0059] FIG. 6C is a characteristic diagram of modulation transfer
of a visible light according to the sixth embodiment of the present
application.
[0060] FIG. 6D is a characteristic diagram of modulation transfer
of infrared rays according to the sixth embodiment of the present
application.
[0061] FIG. 7A is a schematic view of the optical image capturing
system according to the seventh embodiment of the present
application.
[0062] FIG. 7B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the seventh embodiment of the present application.
[0063] FIG. 7C is a characteristic diagram of modulation transfer
of a visible light according to the seventh embodiment of the
present application.
[0064] FIG. 7D is a characteristic diagram of modulation transfer
of infrared rays according to the seventh embodiment of the present
application.
[0065] FIG. 8A is a schematic view of the optical image capturing
system according to the eighth embodiment of the present
application.
[0066] FIG. 8B is longitudinal spherical aberration curves,
astigmatic field curves, and an optical distortion grid of the
optical image capturing system in the order from left to right
according to the eighth embodiment of the present application.
[0067] FIG. 8C is a characteristic diagram of modulation transfer
of a visible light according to the eighth embodiment of the
present application.
[0068] FIG. 8D is a characteristic diagram of modulation transfer
of infrared rays according to the eighth embodiment of the present
application.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0069] Reference will now be made in detail to the exemplary
embodiments of the present disclosure, examples of which are
illustrated in the accompanying drawings. Therefore, it is to be
understood that the foregoing is illustrative of exemplary
embodiments and is not to be construed as limited to the specific
embodiments disclosed, and that modifications to the disclosed
exemplary embodiments, as well as other exemplary embodiments, are
intended to be included within the scope of the appended claims.
These embodiments are provided so that this disclosure will be
thorough and complete, and will fully convey the inventive concept
to those skilled in the art. The relative proportions and ratios of
elements in the drawings may be exaggerated or diminished in size
for the sake of clarity and convenience in the drawings, and such
arbitrary proportions are only illustrative and not limiting in any
way. The same reference numbers are used in the drawings and the
description to refer to the same or like parts.
[0070] It will be understood that, although the terms `first`,
`second`, `third`, etc., may be used herein to describe various
elements, these elements should not be limited by these terms. The
terms are used only for the purpose of distinguishing one component
from another component. Thus, a first element discussed below could
be termed a second element without departing from the teachings of
embodiments. As used herein, the term "or" includes any and all
combinations of one or more of the associated listed items.
[0071] An optical image capturing system, in order from an object
side to an image side, includes a first, second, third, fourth,
fifth and sixth lens elements with refractive power and an image
plane. The optical image capturing system may further include an
image sensing device which is disposed on an image plane.
[0072] The optical image capturing system may use three sets of
wavelengths which are 486.1 nm, 587.5 nm and 656.2 nm,
respectively, wherein 587.5 nm is served as the primary reference
wavelength and a reference wavelength for retrieving technical
features. The optical image capturing system may also use five sets
of wavelengths which are 470 nm, 510 nm, 555 nm, 610 nm and 650 nm,
respectively, wherein 555 nm is served as the primary reference
wavelength and a reference wavelength for retrieving technical
features.
[0073] A ratio of the focal length f of the optical image capturing
system to a focal length fp of each of lens elements with positive
refractive power is PPR. A ratio of the focal length f of the
optical image capturing system to a focal length fn of each of lens
elements with negative refractive power is NPR. A sum of the PPR of
all lens elements with positive refractive power is .SIGMA.PPR. A
sum of the NPR of all lens elements with negative refractive powers
is .SIGMA.NPR. It is beneficial to control the total refractive
power and the total length of the optical image capturing system
when following conditions are satisfied:
0.5.ltoreq..SIGMA.PPR/|.SIGMA.NPR|.ltoreq.15. Preferably, the
following relation may be satisfied:
1.ltoreq..SIGMA.PPR/|.SIGMA.NPR|.ltoreq.3.0.
[0074] The optical image capturing system may further include an
image sensing device which is disposed on an image plane. Half of a
diagonal of an effective detection field of the image sensing
device (imaging height or the maximum image height of the optical
image capturing system) is HOI. A distance on the optical axis from
the object-side surface of the first lens element to the image
plane is HOS. The following relations are satisfied:
HOS/HOI.ltoreq.50 and 0.5.ltoreq.HOS/f.ltoreq.150. Preferably, the
following relations may be satisfied: 1.ltoreq.HOS/HOI.ltoreq.40
and 1.ltoreq.HOS/f.ltoreq.140. Hereby, the miniaturization of the
optical image capturing system can be maintained effectively, so as
to be carried by lightweight portable electronic devices.
[0075] In addition, in the optical image capturing system of the
disclosure, according to different requirements, at least one
aperture stop may be arranged for reducing stray light and
improving the imaging quality.
[0076] In the optical image capturing system of the disclosure, the
aperture stop may be a front or middle aperture. The front aperture
is the aperture stop between a photographed object and the first
lens element. The middle aperture is the aperture stop between the
first lens element and the image plane. If the aperture stop is the
front aperture, a longer distance between the exit pupil and the
image plane of the optical image capturing system can be formed,
such that more optical elements can be disposed in the optical
image capturing system and the efficiency of receiving images of
the image sensing device can be raised. If the aperture stop is the
middle aperture, the view angle of the optical image capturing
system can be expended, such that the optical image capturing
system has the same advantage that is owned by wide angle cameras.
A distance from the aperture stop to the image plane is InS. The
following relation is satisfied: 0.1.ltoreq.InS/HOS.ltoreq.1.1.
Hereby, features of maintaining the minimization for the optical
image capturing system and having wide-angle are available
simultaneously.
[0077] In the optical image capturing system of the disclosure, a
distance from the object-side surface of the first lens element to
the image-side surface of the sixth lens element is InTL. A sum of
central thicknesses of all lens elements with refractive power on
the optical axis is ETP. The following relation is satisfied:
0.1.ltoreq..SIGMA.TP/InTL.ltoreq.0.9. Hereby, contrast ratio for
the image formation in the optical image capturing system and
defect-free rate for manufacturing the lens element can be given
consideration simultaneously, and a proper back focal length is
provided to dispose other optical components in the optical image
capturing system.
[0078] A curvature radius of the object-side surface of the first
lens element is R1. A curvature radius of the image-side surface of
the first lens element is R2. The following relation is satisfied:
0.001.ltoreq.|R1/R2|.ltoreq.25. Hereby, the first lens element may
have proper strength of the positive refractive power, so as to
avoid the longitudinal spherical aberration to increase too fast.
Preferably, the following relation may be satisfied:
0.01.ltoreq.|R1/R2|<12.
[0079] A curvature radius of the object-side surface of the sixth
lens element is R11. A curvature radius of the image-side surface
of the sixth lens element is R12. The following relation is
satisfied: -7<(R11-R12)/(R11+R12)<50. Hereby, the astigmatism
generated by the optical image capturing system can be corrected
beneficially.
[0080] A distance between the first lens element and the second
lens element on the optical axis is IN12. The following relation is
satisfied: IN12/f.ltoreq.60. Hereby, the chromatic aberration of
the lens elements can be improved, such that the performance can be
increased.
[0081] A distance between the fifth lens element and the sixth lens
element on the optical axis is IN56. The following relation is
satisfied: IN56/f.ltoreq.3.0. Hereby, the chromatic aberration of
the lens elements can be improved, such that the performance can be
increased.
[0082] Central thicknesses of the first lens element and the second
lens element on the optical axis are TP1 and TP2, respectively. The
following relation is satisfied:
0.1.ltoreq.(TP1+IN12)/TP2.ltoreq.10. Hereby, the sensitivity
produced by the optical image capturing system can be controlled,
and the performance can be increased.
[0083] Central thicknesses of the fifth lens element and the sixth
lens element on the optical axis are TP5 and TP6, respectively, and
a distance between the aforementioned two lens elements on the
optical axis is IN56. The following relation is satisfied:
0.1.ltoreq.(TP6+IN56)/TP5.ltoreq.15. Hereby, the sensitivity
produced by the optical image capturing system can be controlled
and the total height of the optical image capturing system can be
reduced.
[0084] Central thicknesses of the second lens element, the third
lens element and the fourth lens element on the optical axis are
TP2, TP3 and TP4, respectively. A distance between the second lens
element and the third lens element on the optical axis is IN23. A
distance between the third lens element and the fourth lens element
on the optical axis is IN34. A distance between the fourth lens
element and the fifth lens element on the optical axis is IN45. A
distance on the optical axis from the object-side surface of the
first lens element to the image-side surface of the sixth lens
element is InTL The following relation is satisfied:
0.1.ltoreq.TP4/(IN34+TP4+IN45)<1. Hereby, the aberration
generated by the process of moving the incident light can be
adjusted slightly layer upon layer, and the total height of the
optical image capturing system can be reduced.
[0085] In the optical image capturing system of the disclosure, a
distance perpendicular to the optical axis between a critical point
C61 on the object-side surface of the sixth lens element and the
optical axis is HVT61. A distance perpendicular to the optical axis
between a critical point C62 on the image-side surface of the sixth
lens element and the optical axis is HVT62. A horizontal
displacement distance on the optical axis from an axial point on
the object-side surface of the sixth lens element to the critical
point C61 is SGC61. A horizontal displacement distance on the
optical axis from an axial point on the image-side surface of the
sixth lens element to the critical point C62 is SGC62. The
following relations may be satisfied: 0 mm.ltoreq.HVT61.ltoreq.3
mm, 0 mm<HVT62.ltoreq.6 mm, 0.ltoreq.HVT61/HVT62, 0
mm.ltoreq.|SGC61|.ltoreq.0.5 mm, 0 mm.ltoreq.|SGC62|.ltoreq.2 mm
and 0<|SGC62|/(|SGC62|+TP6).ltoreq.0.9. Hereby, the aberration
in the off-axis view field can be corrected.
[0086] The optical image capturing system of the disclosure
satisfies the following relation: 0.2.ltoreq.HVT62/HOI.ltoreq.0.9.
Preferably, the following relation may be satisfied:
0.3.ltoreq.HVT62/HOI.ltoreq.0.8. Hereby, the aberration of
surrounding view field can be corrected.
[0087] The optical image capturing system of the disclosure
satisfies the following relation: 0.ltoreq.HVT62/HOS.ltoreq.0.5.
Preferably, the following relation may be satisfied:
0.2.ltoreq.HVT62/HOS.ltoreq.0.45. Hereby, the aberration of
surrounding view field can be corrected.
[0088] In the optical image capturing system of the disclosure, a
distance in parallel with an optical axis from an inflection point
on the object-side surface of the sixth lens element which is
nearest to the optical axis to an axial point on the object-side
surface of the sixth lens element is denoted by SGI611. A distance
in parallel with an optical axis from an inflection point on the
image-side surface of the sixth lens element which is nearest to
the optical axis to an axial point on the image-side surface of the
sixth lens element is denoted by SGI621. The following relations
are satisfied: 0<SGI611/(SGI611+TP6).ltoreq.0.9 and
0<SGI621/(SGI621+TP6).ltoreq.0.9. Preferably, the following
relations may be satisfied:
0.1.ltoreq.SGI611/(SGI611+TP6).ltoreq.0.6 and
0.1.ltoreq.SGI621/(SGI621+TP6).ltoreq.0.6.
[0089] A distance in parallel with the optical axis from the
inflection point on the object-side surface of the sixth lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the sixth lens element is
denoted by SGI612. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the sixth lens
element which is the second nearest to the optical axis to an axial
point on the image-side surface of the sixth lens element is
denoted by SGI622. The following relations are satisfied:
0<SGI612/(SGI612+TP6).ltoreq.0.9 and
0<SGI622/(SGI622+TP6).ltoreq.0.9. Preferably, the following
relations may be satisfied:
0.1.ltoreq.SGI612/(SGI612+TP6).ltoreq.0.6 and
0.1.ltoreq.SGI622/(SGI622+TP6).ltoreq.0.6.
[0090] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is nearest to the optical axis and the optical axis
is denoted by HIF611. A distance perpendicular to the optical axis
between an inflection point on the image-side surface of the sixth
lens element which is nearest to the optical axis and an axial
point on the image-side surface of the sixth lens element is
denoted by HIF621. The following relations are satisfied: 0.001
mm.ltoreq.|HIF611.ltoreq.5 mm and 0.001 mm.ltoreq.|HIF621|.ltoreq.5
mm. Preferably, the following relations may be satisfied: 0.1
mm.ltoreq.|HIF611 |.ltoreq.3.5 mm and 1.5
mm.ltoreq.|HIF621|.ltoreq.3.5 mm.
[0091] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the second nearest to the optical axis and the
optical axis is denoted by HIF612. A distance perpendicular to the
optical axis between an axial point on the image-side surface of
the sixth lens element and an inflection point on the image-side
surface of the sixth lens element which is the second nearest to
the optical axis is denoted by HIF622. The following relations are
satisfied: 0.001 mm.ltoreq.|HIF612|.ltoreq.5 mm and 0.001
mm.ltoreq.|HIF622|.ltoreq.5 mm. Preferably, the following relations
may be satisfied: 0.1 mm.ltoreq.|HIF622|.ltoreq.3.5 mm and 0.1
mm.ltoreq.|HIF612|.ltoreq.3.5 mm.
[0092] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the third nearest to the optical axis and the
optical axis is denoted by HIF613. A distance perpendicular to the
optical axis between an axial point on the image-side surface of
the sixth lens element and an inflection point on the image-side
surface of the sixth lens element which is the third nearest to the
optical axis is denoted by HIF623. The following relations are
satisfied: 0.001 mm.ltoreq.|HIF613|.ltoreq.5 mm and 0.001
mm.ltoreq.|HIF623|.ltoreq.5 mm. Preferably, the following relations
may be satisfied: 0.1 mm.ltoreq.|HIF623|.ltoreq.3.5 mm and 0.1
mm.ltoreq.|HIF613|.ltoreq.3.5 mm.
[0093] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the fourth nearest to the optical axis and the
optical axis is denoted by HIF614. A distance perpendicular to the
optical axis between an axial point on the image-side surface of
the sixth lens element and an inflection point on the image-side
surface of the sixth lens element which is the fourth nearest to
the optical axis is denoted by HIF624. The following relations are
satisfied: 0.001 mm.ltoreq.|HIF614|.ltoreq.5 mm and 0.001
mm.ltoreq.|HIF624|.ltoreq.5 mm. Preferably, the following relations
may be satisfied: 0.1 mm.ltoreq.|HIF624|.ltoreq.3.5 mm and 0.1
mm.ltoreq.|HIF614|.ltoreq.3.5 mm.
[0094] In one embodiment of the optical image capturing system of
the present disclosure, the chromatic aberration of the optical
image capturing system can be corrected by alternatively arranging
the lens elements with large Abbe number and small Abbe number.
[0095] The above Aspheric formula is:
z=ch.sup.2/[1+[1-(k+1)c.sup.2h.sup.2].sup.0.5]+A4h.sup.4+A6h.sup.6+A8h.s-
up.8+A10h.sup.10+A12h.sup.12+A14h.sup.14+A16h.sup.16+A18h.sup.18+A20h.sup.-
20+ . . . (1)
where z is a position value of the position along the optical axis
and at the height h which reference to the surface apex; k is the
conic coefficient, c is the reciprocal of curvature radius, and A4,
A6, A5, A10, A12, A14, A16, A18, and A20 are high order aspheric
coefficients.
[0096] The optical image capturing system provided by the
disclosure, the lens elements may be made of glass or plastic
material. If plastic material is adopted to produce the lens
elements, the cost of manufacturing will be lowered effectively. If
lens elements are made of glass, the heat effect can be controlled
and the designed space arranged for the refractive power of the
optical image capturing system can be increased. Besides, the
object-side surface and the image-side surface of the first through
sixth lens elements may be aspheric, so as to obtain more control
variables. Comparing with the usage of traditional lens element
made by glass, the number of lens elements used can be reduced and
the aberration can be eliminated. Thus, the total height of the
optical image capturing system can be reduced effectively.
[0097] In addition, in the optical image capturing system provided
by the disclosure, if the lens element has a convex surface, the
surface of the lens element adjacent to the optical axis is convex
in principle. If the lens element has a concave surface, the
surface of the lens element adjacent to the optical axis is concave
in principle.
[0098] The optical image capturing system of the disclosure can be
adapted to the optical image capturing system with automatic focus
if required. With the features of a good aberration correction and
a high quality of image formation, the optical image capturing
system can be used in various application fields.
[0099] The optical image capturing system of the disclosure can
include a driving module according to the actual requirements. The
driving module may be coupled with the lens elements to enable the
lens elements producing displacement. The driving module may be the
voice coil motor (VCM) which is applied to move the lens to focus,
or may be the optical image stabilization (OIS) which is applied to
reduce the distortion frequency owing to the vibration of the lens
while shooting.
[0100] At least one of the first, second, third, fourth, fifth and
sixth lens elements of the optical image capturing system of the
disclosure may further be designed as a light filtration element
with a wavelength of less than 500) nm according to the actual
requirement. The light filtration element may be made by coating at
least one surface of the specific lens element characterized of the
filter function, and alternatively, may be made by the lens element
per se made of the material which is capable of filtering short
wavelength.
[0101] According to the above embodiments, the specific embodiments
with figures are presented in detail as below.
The First Embodiment
Embodiment 1
[0102] Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic
view of the optical image capturing system according to the first
embodiment of the present application, FIG. 1B is longitudinal
spherical aberration curves, astigmatic field curves, and an
optical distortion curve of the optical image capturing system in
the order from left to right according to the first embodiment of
the present application, FIG. 1C is a characteristic diagram of
modulation transfer of a visible light according to the first
embodiment of the present application, and FIG. 1D is a
characteristic diagram of modulation transfer of infrared rays
according to the first embodiment of the present application. As
shown in FIG. 1A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
110, an aperture stop 100, a second lens element 120, a third lens
element 130, a fourth lens element 140, a fifth lens element 150, a
sixth lens element 160, an IR-bandstop filter 180, an image plane
190, and an image sensing device 192.
[0103] The first lens element 110 has negative refractive power and
it is made of plastic material. The first lens element 110 has a
concave object-side surface 112 and a concave image-side surface
114, and both of the object-side surface 112 and the image-side
surface 114 are aspheric. The object-side surface 112 has two
inflection points. The thickness of the first lens element on the
optical axis is TP1. The thickness of the first lens element at
height of 1/2 entrance pupil diameter (HEP) is denoted by ETP1.
[0104] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the first lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the first lens element is denoted by
SGI111. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the first lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the first lens element is denoted by
SGI121. The following relations are satisfied: SGI111=-0.0031 mm
and |SGI111|/(|SGI111|+TP1)=0.0016.
[0105] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the first lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the first lens element is
denoted by SGI112. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the first lens
element which is the second nearest to the optical axis to an axial
point on the image-side surface of the first lens element is
denoted by SGI122. The following relations are satisfied:
SGI112=1.3178 mm and |SGI112|/(|SGI112+TP1)=0.4052.
[0106] A distance perpendicular to the optical axis from the
inflection point on the object-side surface of the first lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the first lens element is denoted by
HIF111. A distance perpendicular to the optical axis from the
inflection point on the image-side surface of the first lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the first lens element is denoted by
HIF121. The following relations are satisfied: HIF111=0.5557 mm and
HIF111/HOI=0.1111.
[0107] A distance perpendicular to the optical axis from the
inflection point on the object-side surface of the first lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the first lens element is
denoted by HIF112. A distance perpendicular to the optical axis
from the inflection point on the image-side surface of the first
lens element which is the second nearest to the optical axis to an
axial point on the image-side surface of the first lens element is
denoted by HIF122. The following relations are satisfied:
HIF112=5.3732 mm and HIF112/HOI=1.0746.
[0108] The second lens element 120 has positive refractive power
and it is made of plastic material. The second lens element 120 has
a convex object-side surface 122 and a convex image-side surface
124, and both of the object-side surface 122 and the image-side
surface 124 are aspheric. The object-side surface 122 has an
inflection point. The thickness of the second lens element on the
optical axis is TP2. The thickness of the second lens element at
height of 1/2 entrance pupil diameter (HEP) is denoted by ETP2.
[0109] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the second lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the second lens element is denoted by
SGI211. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the second lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the second lens element is denoted by
SGI221. The following relations are satisfied: SGI211=0.1069 mm,
|SGI211|/(|SGI211|+TP2)=0.0412, SGI2210 mm and
SGI221|/(|SGI221|+TP2)=0.
[0110] A distance perpendicular to the optical axis from the
inflection point on the object-side surface of the second lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the second lens element is denoted by
HIF211. A distance perpendicular to the optical axis from the
inflection point on the image-side surface of the second lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the second lens element is denoted by
HIF221. The following relations are satisfied: HIF211=1.1264 mm,
HIF211/HOI=0.2253, HIF221=0 mm and HIF221/HOI=0.
[0111] The third lens element 130 has negative refractive power and
it is made of plastic material. The third lens element 130 has a
concave object-side surface 132 and a convex image-side surface
134, and both of the object-side surface 132 and the image-side
surface 134 are aspheric. The object-side surface 132 and the
image-side surface 134 both have an inflection point. The thickness
of the third lens element on the optical axis is TP3. The thickness
of the third lens element at height of 1/2 entrance pupil diameter
(HEP) is denoted by ETP3.
[0112] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the third lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the third lens element is denoted by
SGI311. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the third lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the third lens element is denoted by
SGI321. The following relations are satisfied: SGI311=-0.3041 mm,
|SGI311|/(|SGI311|+TP3)=0.4445, SGI321=-0.1172 mm and
SGI321|/(|SGI321|+TP3)=0.2357.
[0113] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the third lens
element which is nearest to the optical axis and the optical axis
is denoted by HIF311. A distance perpendicular to the optical axis
from the inflection point on the image-side surface of the third
lens element which is nearest to the optical axis to an axial point
on the image-side surface of the third lens element is denoted by
HIF321. The following relations are satisfied: HIF311=1.5907 mm,
HIF311/HOI=0.3181, HIF321=1.3380 mm and HIF321/HOI=0.2676.
[0114] The fourth lens element 140 has positive refractive power
and it is made of plastic material. The fourth lens element 140 has
a convex object-side surface 142 and a concave image-side surface
144, and both of the object-side surface 142 and the image-side
surface 144 are aspheric. The object-side surface 142 has two
inflection points and the image-side surface 144 has an inflection
point. The thickness of the fourth lens element on the optical axis
is TP4. The thickness of the fourth lens element at height of 1/2
entrance pupil diameter (HEP) is denoted by ETP4.
[0115] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fourth lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the fourth lens element is denoted by
SGI411. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the fourth lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the fourth lens element is denoted by
SGI421. The following relations are satisfied: SGI411=0.0070 mm,
|SGI411/(|SGI411|+TP4)=0.0056, SGI421=0.0006 mm and
|SGI421|/(|SGI421|+TP4)=0.0005.
[0116] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fourth lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the fourth lens element is
denoted by SGI412. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the fourth lens
element which is the second nearest to the optical axis to an axial
point on the image-side surface of the fourth lens element is
denoted by SGI422. The following relations are satisfied:
SGI412=-0.2078 mm and |SGI412|/(|SGI412|+TP4)=0.1439.
[0117] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fourth lens
element which is nearest to the optical axis and the optical axis
is denoted by HIF411. A distance perpendicular to the optical axis
between the inflection point on the image-side surface of the
fourth lens element which is nearest to the optical axis and the
optical axis is denoted by HIF421. The following relations are
satisfied: HIF411=0.4706 mm, HIF411/HOI=0.0941, HIF421=0.1721 mm
and HIF421/HOI=0.0344.
[0118] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fourth lens
element which is the second nearest to the optical axis and the
optical axis is denoted by HIF412. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the fourth lens element which is the second nearest to the
optical axis and the optical axis is denoted by HIF422. The
following relations are satisfied: HIF412=2.0421 mm and
HIF412/HOI=0.4084.
[0119] The fifth lens element 150 has positive refractive power and
it is made of plastic material. The fifth lens element 150 has a
convex object-side surface 152 and a convex image-side surface 154,
and both of the object-side surface 152 and the image-side surface
154 are aspheric. The object-side surface 152 has two inflection
points and the image-side surface 154 has an inflection point. The
thickness of the fifth lens element on the optical axis is TP5. The
thickness of the fifth lens element at height of 1/2 entrance pupil
diameter (HEP) is denoted by ETP5.
[0120] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fifth lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the fifth lens element is denoted by
SGI511. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the fifth lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the fifth lens element is denoted by
SGI521. The following relations are satisfied: SGI511=0.00364 mm,
|SGI511|/(|SGI511|+TP5)=0.00338, SGI521=-0.63365 mm and
|SGI521|/(|SGI521|+TP5)=0.37154.
[0121] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fifth lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the fifth lens element is
denoted by SGI512. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the fifth lens
element which is the second nearest to the optical axis to an axial
point on the image-side surface of the fifth lens element is
denoted by SGI522. The following relations are satisfied:
SGI512=-0.32032 mm and |SGI512|/(|SGI512|+TP5)=0.23009.
[0122] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fifth lens
element which is the third nearest to the optical axis to an axial
point on the object-side surface of the fifth lens element is
denoted by SGI513. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the fifth lens
element which is the third nearest to the optical axis to an axial
point on the image-side surface of the fifth lens element is
denoted by SGI523. The following relations are satisfied: SGI513=0
mm, |SGI513|/(|SGI513|+TP5)=0, SGI523=0 mm and
|SGI523|/(|SGI523+TP5)=0.
[0123] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the fifth lens
element which is the fourth nearest to the optical axis to an axial
point on the object-side surface of the fifth lens element is
denoted by SGI514. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the fifth lens
element which is the fourth nearest to the optical axis to an axial
point on the image-side surface of the fifth lens element is
denoted by SGI524. The following relations are satisfied: SGI514=0
mm, |SGI514|/(|SGI514|+TP5)=0, SGI524=0 mm and
|SGI524|/(|SGI524|+TP5)=0.
[0124] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fifth lens
element which is nearest to the optical axis and the optical axis
is denoted by HIF511. A distance perpendicular to the optical axis
between the inflection point on the image-side surface of the fifth
lens element which is nearest to the optical axis and the optical
axis is denoted by HIF521. The following relations are satisfied:
HIF511=0.28212 mm, HIF511/HOI=0.05642, HIF521=2.13850 mm and
HIF521/HOI=0.42770.
[0125] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fifth lens
element which is the second nearest to the optical axis and the
optical axis is denoted by HIF512. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the fifth lens element which is the second nearest to the
optical axis and the optical axis is denoted by HIF522. The
following relations are satisfied: HIF512=2.51384 mm and
HIF512/HOI=0.50277.
[0126] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fifth lens
element which is the third nearest to the optical axis and the
optical axis is denoted by HIF513. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the fifth lens element which is the third nearest to the optical
axis and the optical axis is denoted by HIF523. The following
relations are satisfied: HIF513=0 mm, HIF513/HOI=0, HIF523=0 mm and
HIF523/HOI=0.
[0127] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the fifth lens
element which is the fourth nearest to the optical axis and the
optical axis is denoted by HIF514. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the fifth lens element which is the fourth nearest to the
optical axis and the optical axis is denoted by HIF524. The
following relations are satisfied: HIF514=0 mm, HIF514/HOI=0,
HIF524=0 mm and HIF524/HOI=0.
[0128] The sixth lens element 160 has negative refractive power and
it is made of plastic material. The sixth lens element 160 has a
concave object-side surface 162 and a concave image-side surface
164, and the object-side surface 162 has two inflection points and
the image-side surface 164 has an inflection point. Hereby, the
angle of incident of each view field on the sixth lens element can
be effectively adjusted and the spherical aberration can thus be
improved. The thickness of the sixth lens element on the optical
axis is TP6. The thickness of the sixth lens element at height of
1/2 entrance pupil diameter (HEP) is denoted by ETP6.
[0129] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the sixth lens
element which is nearest to the optical axis to an axial point on
the object-side surface of the sixth lens element is denoted by
SGI611. A distance in parallel with an optical axis from an
inflection point on the image-side surface of the sixth lens
element which is nearest to the optical axis to an axial point on
the image-side surface of the sixth lens element is denoted by
SGI621. The following relations are satisfied: SGI611=-0.38558 mm,
|SGI611|/(|SGI611|+TP6)=0.27212, SGI621=0.12386 mm and
|SGI621|/(|SGI621|+TP6)=0.10722.
[0130] A distance in parallel with an optical axis from an
inflection point on the object-side surface of the sixth lens
element which is the second nearest to the optical axis to an axial
point on the object-side surface of the sixth lens element is
denoted by SGI612. A distance in parallel with an optical axis from
an inflection point on the image-side surface of the sixth lens
element which is the second nearest to the optical axis to an axial
point on the image-side surface of the sixth lens element is
denoted by SGI621. The following relations are satisfied:
SGI612=-0.47400 mm, |SGI612|/(|SGI612+TP6)=0.31488, SGI622=0 mm and
|SGI622|/(|SGI622|+TP6)=0.
[0131] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is nearest to the optical axis and the optical axis
is denoted by HIF611. A distance perpendicular to the optical axis
between the inflection point on the image-side surface of the sixth
lens element which is nearest to the optical axis and the optical
axis is denoted by HIF621. The following relations are satisfied:
HIF611=2.24283 mm, HIF611/HOI=0.44857, HIF621=1.07376 mm and
HIF621/HOI=0.21475.
[0132] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the second nearest to the optical axis and the
optical axis is denoted by HIF612. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the sixth lens element which is the second nearest to the
optical axis and the optical axis is denoted by HIF622. The
following relations are satisfied: HIF612=2.48895 mm and
HIF612/HOI=0.49779.
[0133] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the third nearest to the optical axis and the
optical axis is denoted by HIF613. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the sixth lens element which is the third nearest to the optical
axis and the optical axis is denoted by HIF623. The following
relations are satisfied: HIF613=0 mm, HIF613/HOI=0, HIF623=0 mm and
HIF623/HOI=0.
[0134] A distance perpendicular to the optical axis between the
inflection point on the object-side surface of the sixth lens
element which is the fourth nearest to the optical axis and the
optical axis is denoted by HIF614. A distance perpendicular to the
optical axis between the inflection point on the image-side surface
of the sixth lens element which is the fourth nearest to the
optical axis and the optical axis is denoted by HIF624. The
following relations are satisfied: HIF614=0 mm, HIF614/HOI=0,
HIF624=0 mm and HIF624/HOI=0.
[0135] In the first embodiment, a horizontal distance in parallel
with the optical axis from a coordinate point on the object-side
surface of the first lens element at height 1/2 HEP to the image
plane is ETL. A horizontal distance in parallel with the optical
axis from a coordinate point on the object-side surface of the
first lens element at height 1/2 HEP to a coordinate point on the
image-side surface of the sixth lens element at height 1/2 HEP is
EIN. The following relations are satisfied: ETL=19.304 mm,
EIN=15.733 mm and EIN/ETL=0.815.
[0136] The first embodiment satisfies the following relations:
ETP1=2.371 mm, ETP2=2.134 mm, ETP3=0.497 mm, ETP4=1.111 mm,
ETP5=1.783 mm and ETP6=1.404 mm. A sum of ETP1 to ETP6 described
above SETP=9.300 mm, TP1=2.064 mm, TP2=2.500 mm, TP3=0.380 mm,
TP4=1.186 mm, TP5=2.184 mm and TP6=1.105 mm. A sum of TP1 to TP6
described above STP=9.419 mm. SETP/STP=0.987. SETP/EIN=0.5911.
[0137] The present embodiment particularly controls the ratio
relation (ETP/TP) of the thickness (ETP) of each lens element at
height of 1/2 entrance pupil diameter (HEP) to the thickness (TP)
of the lens element to which the surface belongs on the optical
axis in order to achieve a balance between manufacturability and
capability of aberration correction. The following relations are
satisfied: ETP1/TP1=1.149, ETP2/TP2=0.854, ETP3/TP3=1.308,
ETP4/TP4=0.936, ETP5/TP5=0.817 and ETP6/TP6=1.271.
[0138] The present embodiment controls a horizontal distance
between each two adjacent lens elements at height of 1/2 entrance
pupil diameter (HEP) to achieve a balance between the degree of
miniaturization for the length of the optical image capturing
system HOS, the manufacturability and the capability of aberration
correction. The ratio relation (ED/IN) of the horizontal distance
(ED) between the two adjacent lens elements at height of 1/2
entrance pupil diameter (HEP) to the horizontal distance (IN)
between the two adjacent lens elements on the optical axis is
particularly controlled. The following relations are satisfied: a
horizontal distance in parallel with the optical axis between the
first lens element and the second lens element at height of 1/2
entrance pupil diameter (HEP) ED12=5.285 mm; a horizontal distance
in parallel with the optical axis between the second lens element
and the third lens element at height of 1/2 entrance pupil diameter
(HEP) ED23=0.283 mm; a horizontal distance in parallel with the
optical axis between the third lens element and the fourth lens
element at height of 1/2 entrance pupil diameter (HEP) ED34=0.330
mm; a horizontal distance in parallel with the optical axis between
the fourth lens element and the fifth lens element at height of 1/2
entrance pupil diameter (HEP) ED45=0.348 mm; a horizontal distance
in parallel with the optical axis between the fifth lens element
and the sixth lens element at height of 1/2 entrance pupil diameter
(HEP) ED56=0.187 mm. A sum of ED12 to ED56 described above is
denoted as SED and SED=6.433 mm.
[0139] The horizontal distance between the first lens element and
the second lens element on the optical axis IN12=5.470 mm and
ED12/IN12=0.966. The horizontal distance between the second lens
element and the third lens element on the optical axis IN23=0.178
mm and ED23/IN23=1.590. The horizontal distance between the third
lens element and the fourth lens element on the optical axis
IN34=0.259 mm and ED34/IN34=1.273. The horizontal distance between
the fourth lens element and the fifth lens element on the optical
axis IN45=0.209 mm and ED45/IN45=1.664. The horizontal distance
between the fifth lens element and the sixth lens element on the
optical axis IN56=0.034 mm and ED56/IN56=5.557. A sum of IN12 to
IN56 described above is denoted as SIN. SIN=6.150 mm.
SED/SIN=1.046.
[0140] The first embodiment also satisfies the following relations:
ED12/ED23=18.685, ED23/ED34=0.857, ED34/ED45=0.947,
ED45/ED56=1.859, IN12/IN23=30.746, IN23/IN34=0.686, IN34/IN45=1.239
and IN45/IN56=6.207.
[0141] A horizontal distance in parallel with the optical axis from
a coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the image plane EBL=3.570 mm. A
horizontal distance in parallel with the optical axis from an axial
point on the image-side surface of the sixth lens element to the
image plane BL=4.032 mm. The embodiment of the present invention
may satisfy the following relation: EBL/BL=0.8854. In the present
invention, a distance in parallel with the optical axis from a
coordinate point on the image-side surface of the sixth lens
element at height 1/2 HEP to the IR-bandstop filter EIR=1.950 mm. A
distance in parallel with the optical axis from an axial point on
the image-side surface of the sixth lens element to the IR-bandstop
filter PIR=2.121 mm. The following relation is satisfied:
EIR/PIR=0.920.
[0142] The IR-bandstop filter 180 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 160 and the image
plane 190.
[0143] In the optical image capturing system of the first
embodiment, a focal length of the optical image capturing system is
f, an entrance pupil diameter of the optical image capturing system
is HEP, and half of a maximal view angle of the optical image
capturing system is HAF. The detailed parameters are shown as
below: f=4.075 mm, f/HEP=1.4, HAF=50.001.degree. and
tan(HAF)=1.1918.
[0144] In the optical image capturing system of the first
embodiment, a focal length of the first lens element 110 is f11 and
a focal length of the sixth lens element 160 is f6. The following
relations are satisfied: f1=-7.828 mm, |f/f1|=0.52060, f6=-4.886
and |f1|>|f6|.
[0145] In the optical image capturing system of the first
embodiment, focal lengths of the second lens element 120 to the
fifth lens element 150 are f2, f3, f4 and f5, respectively. The
following relations are satisfied: |f2|+|f3|+|f4|+|f5|=95.50815 mm,
|f1|+|f6|=12.71352 mm and |f2|+|f3|+|f4|+|f5|>|f1|+|f6|.
[0146] A ratio of the focal length f of the optical image capturing
system to a focal length fp of each of lens elements with positive
refractive power is PPR. A ratio of the focal length f of the
optical image capturing system to a focal length fn of each of lens
elements with negative refractive power is NPR. In the optical
image capturing system of the first embodiment, a sum of the PPR of
all lens elements with positive refractive power is
.SIGMA.PPR=f/f1+f/f3+f/f5=1.63290. A sum of the NPR of all lens
elements with negative refractive powers is
.SIGMA.NPR=|f/f1|+|f/f3|+|f/f6=1.51305,
.SIGMA.PPR/.SIGMA.NPR|=1.07921. The following relations are also
satisfied: f/f2|=0.69101, |f/f3|=0.15834, |f/f4|=0.06883,
|f/f5|=0.87305 and |f/f6|=0.83412.
[0147] In the optical image capturing system of the first
embodiment, a distance from the object-side surface 112 of the
first lens element to the image-side surface 164 of the sixth lens
element is InTL. A distance from the object-side surface 112 of the
first lens element to the image plane 190 is HOS. A distance from
an aperture 100 to an image plane 190 is InS. Half of a diagonal
length of an effective detection field of the image sensing device
192 is HOI. A distance from the image-side surface 164 of the sixth
lens element to the image plane 190 is BFL. The following relations
are satisfied: InTL+BFL=HOS, HOS=19.54120 mm, HOI=5.0 mm,
HOS/HOI=3.90824, HOS/f=4.7952, InS=11.685 mm and
InS/HOS=0.59794.
[0148] In the optical image capturing system of the first
embodiment, a total central thickness of all lens elements with
refractive power on the optical axis is ETP. The following
relations are satisfied: .SIGMA.TP=8.13899 mm and
.SIGMA.TP/InTL=0.52477. Hereby, contrast ratio for the image
formation in the optical image capturing system and defect-free
rate for manufacturing the lens element can be given consideration
simultaneously, and a proper back focal length is provided to
dispose other optical components in the optical image capturing
system.
[0149] In the optical image capturing system of the first
embodiment, a curvature radius of the object-side surface 112 of
the first lens element is R1. A curvature radius of the image-side
surface 114 of the first lens element is R2. The following relation
is satisfied: |R1/R2|=8.99987. Hereby, the first lens element may
have proper strength of the positive refractive power, so as to
avoid the longitudinal spherical aberration to increase too
fast.
[0150] In the optical image capturing system of the first
embodiment, a curvature radius of the object-side surface 162 of
the sixth lens element is R11. A curvature radius of the image-side
surface 164 of the sixth lens element is R12. The following
relation is satisfied: (R11-R12)/(R11+R12)=1.27780. Hereby, the
astigmatism generated by the optical image capturing system can be
corrected beneficially.
[0151] In the optical image capturing system of the first
embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relations are
satisfied: .SIGMA.PP=f1+f3+f5=69.770 mm and f5/(f2+f4+f5)=0.067.
Hereby, it is favorable for allocating the positive refractive
power of a single lens element to other positive lens elements and
the significant aberrations generated in the process of moving the
incident light can be suppressed.
[0152] In the optical image capturing system of the first
embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relations are
satisfied: .SIGMA.NP=f1+f3+f6=-38.451 mm and f6/(f1+f3+f6)=0.127.
Hereby, it is favorable for allocating the positive refractive
power of the sixth lens element 160 to other negative lens elements
and the significant aberrations generated in the process of moving
the incident light can be suppressed.
[0153] In the optical image capturing system of the first
embodiment, a distance between the first lens element 110 and the
second lens element 120 on the optical axis is IN12. The following
relations are satisfied: IN12=6.418 mm and IN12/f=1.57491. Hereby,
the chromatic aberration of the lens elements can be improved, such
that the performance can be increased.
[0154] In the optical image capturing system of the first
embodiment, a distance between the fifth lens element 150 and the
sixth lens element 160 on the optical axis is IN56. The following
relations are satisfied: IN56=0.025 mm and IN56/f=0.00613. Hereby,
the chromatic aberration of the lens elements can be improved, such
that the performance can be increased.
[0155] In the optical image capturing system of the first
embodiment, central thicknesses of the first lens element 110 and
the second lens element 120 on the optical axis are TP1 and TP2,
respectively. The following relations are satisfied: TP1=1.934 mm,
TP2=2.486 mm and (TP1+IN12)/TP2=3.36005. Hereby, the sensitivity
produced by the optical image capturing system can be controlled,
and the performance can be increased.
[0156] In the optical image capturing system of the first
embodiment, central thicknesses of the fifth lens element 150 and
the sixth lens element 160 on the optical axis are TP5 and TP6,
respectively, and a distance between the aforementioned two lens
elements on the optical axis is IN56. The following relations are
satisfied: TP5=1.072 mm, TP6=1.031 mm and (TP6+IN56)/TP5=0.98555.
Hereby, the sensitivity produced by the optical image capturing
system can be controlled and the total height of the optical image
capturing system can be reduced.
[0157] In the optical image capturing system of the first
embodiment, a distance between the third lens element 130 and the
fourth lens element 140 on the optical axis is IN34. A distance
between the fourth lens element 140 and the fifth lens element 150
on the optical axis is IN45. The following relations are satisfied:
IN34=0.401 mm, IN45=0.025 mm and TP4/(IN34+TP4+IN45)=0.74376.
Hereby, the aberration generated by the process of moving the
incident light can be adjusted slightly layer upon layer, and the
total height of the optical image capturing system can be
reduced.
[0158] In the optical image capturing system of the first
embodiment, a distance in parallel with an optical axis from a
maximum effective half diameter position to an axial point on the
object-side surface 152 of the fifth lens element is InRS51. A
distance in parallel with an optical axis from a maximum effective
half diameter position to an axial point on the image-side surface
154 of the fifth lens element is InRS52. A central thickness of the
fifth lens element 150 is TP5. The following relations are
satisfied: InRS51=-0.34789 mm, InRS52=-0.88185 mm,
|InRS51|/TP5=0.32458 and |InRS52|/TP5=0.82276. Hereby, it is
favorable for manufacturing and forming the lens element and for
maintaining the minimization for the optical image capturing
system.
[0159] In the optical image capturing system of the first
embodiment, a distance perpendicular to the optical axis between a
critical point C51 on the object-side surface 152 of the fifth lens
element and the optical axis is HVT51. A distance perpendicular to
the optical axis between a critical point C52 on the image-side
surface 154 of the fifth lens element and the optical axis is
HVT52. The following relations are satisfied: HVT51=0.515349 mm and
HVT52=0 mm.
[0160] In the optical image capturing system of the first
embodiment, a distance in parallel with an optical axis from a
maximum effective half diameter position to an axial point on the
object-side surface 162 of the sixth lens element is InRS61. A
distance in parallel with an optical axis from a maximum effective
half diameter position to an axial point on the image-side surface
164 of the sixth lens element is InRS62. A central thickness of the
sixth lens element 160 is TP6. The following relations are
satisfied: InRS61=-0.58390 mm, InRS62=0.41976 mm,
|InRS61|/TP6=0.56616 and |InRS62|/TP6=0.40700. Hereby, it is
favorable for manufacturing and forming the lens element and for
maintaining the minimization for the optical image capturing
system.
[0161] In the optical image capturing system of the first
embodiment, a distance perpendicular to the optical axis between a
critical point C61 on the object-side surface 162 of the sixth lens
element and the optical axis is HVT61. A distance perpendicular to
the optical axis between a critical point C62 on the image-side
surface 164 of the sixth lens element and the optical axis is
HVT62. The following relations are satisfied: HVT61=0 mm and
HVT62=0 mm.
[0162] In the optical image capturing system of the first
embodiment, the following relation is satisfied: HVT51/HOI=0.1031.
Hereby, the aberration of surrounding view field can be
corrected.
[0163] In the optical image capturing system of the first
embodiment, the following relation is satisfied: HVT51/HOS=0.02634.
Hereby, the aberration of surrounding view field can be
corrected.
[0164] In the optical image capturing system of the first
embodiment, the second lens element 120, the third lens element 130
and the sixth lens element 160 have negative refractive power. An
Abbe number of the second lens element is NA2. An Abbe number of
the third lens element is NA3. An Abbe number of the sixth lens
element is NA6. The following relation is satisfied:
NA6/NA2.ltoreq.1. Hereby, the chromatic aberration of the optical
image capturing system can be corrected.
[0165] In the optical image capturing system of the first
embodiment, TV distortion and optical distortion for image
formation in the optical image capturing system are TDT and ODT,
respectively. The following relations are satisfied: |TDT|=2.124%
and |ODT|=5.076%.
[0166] In the optical image capturing system of the present
embodiment, contrast transfer rates of modulation transfer with
spatial frequencies of 55 cycles/mm of a visible light at the
optical axis on the image plane, 0.3 HOI and 0.7 HOI are
respectively denoted by MTFE0, MTFE3 and MTFE7. The following
relations are satisfied: MTFE0 is about 0.84, MTFE3 is about 0.84
and MTFE7 is about 0.75. The contrast transfer rates of modulation
transfer with spatial frequencies of 110 cycles/mm of a visible
light at the optical axis on the image plane, 0.3 HOI and 0.7 HOI
are respectively denoted by MTFQ0, MTFQ3 and MTFQ7. The following
relations are satisfied: MTFQ0 is about 0.66, MTFQ3 is about 0.65
and MTFQ7 is about 0.51. The contrast transfer rates of modulation
transfer with spatial frequencies of 220 cycles/mm (MTF values) at
the optical axis on the image plane, 0.3 HOI and 0.7 HOI are
respectively denoted by MTFH0, MTFH3 and MTFH7. The following
relations are satisfied: MTFH0 is about 0.17, MTFH3 is about 0.07
and MTFH7 is about 0.14.
[0167] In the optical image capturing system of the present
embodiment, when the infrared wavelength 850 nm is applied to focus
on the image plane, contrast transfer rates of modulation transfer
with a spatial frequency (55 cycles/mm) (MTF values) of the image
at the optical axis on the image plane, 0.3 HOI and 0.7 HOI are
respectively denoted by MTFI0, MTFI3 and MTFI7. The following
relations are satisfied: MTFI0 is about 0.81, MTFI3 is about 0.8
and MTFI7 is about 0.15.
[0168] Please refer to the following Table 1 and Table 2.
The detailed data of the optical image capturing system of the
first embodiment is as shown in Table 1.
TABLE-US-00001 TABLE 1 Data of the optical image capturing system f
= 4.075 mm, f/HEP = 1.4, HAF = 50.000 deg Surface Abbe Focal #
Curvature Radius Thickness Material Index # length 0 Object Plano
Plano 1 Lens 1 -40.99625704 1.934 Plastic 1.515 56.55 -7.828 2
4.555209289 5.923 3 Ape. stop Plano 0.495 4 Lens 2 5.333427366
2.486 Plastic 1.544 55.96 5.897 5 -6.781659971 0.502 6 Lens 3
-5.697794287 0.380 Plastic 1.642 22.46 -25.738 7 -8.883957518 0.401
8 Lens 4 13.19225664 1.236 Plastic 1.544 55.96 59.205 9 21.55681832
0.025 10 Lens 5 8.987806345 1.072 Plastic 1.515 56.55 4.668 11
-3.158875374 0.025 12 Lens 6 -29.46491425 1.031 Plastic 1.642 22.46
-4.886 13 3.593484273 2.412 14 IR-bandstop Plano 0.200 1.517 64.13
filter 15 Plano 1.420 16 Image plane Plano Reference wavelength
(d-line) = 555 nm, shield position: clear aperture (CA) of the
first plano = 5.800 mm; clear aperture (CA) of the third plano =
1.570 mm; clear aperture (CA) of the fifth plano = 1.950 mm
As for the parameters of the aspheric surfaces of the first
embodiment, reference is made to Table 2.
TABLE-US-00002 TABLE 2 Aspheric Coefficients Surface # 1 2 4 5 6 7
8 k 4.310876E+01 -4.707622E+00 2.616025E+00 2.445397E+00
5.645686E+00 -2.117147E+01 -5.287220E+00 A4 7.054243E-03
1.714312E-02 -8.377541E-03 -1.789549E-02 -3.379055E-03
-1.370959E-02 -2.937377E-02 A6 -5.233264E-04 -1.502232E-04
-1.838068E-03 -3.657520E-03 -1.225453E-03 6.250200E-03 2.743532E-03
A8 3.077890E-05 -1.359611E-04 1.233332E-03 -1.131622E-03
-5.979572E-03 -5.854426E-03 -2.457574E-03 A10 -1.260650E-06
2.680747E-05 -2.390895E-03 1.390351E-03 4.556449E-03 4.049451E-03
1.874319E-03 A12 3.319093E-08 -2.017491E-06 1.998555E-03
-4.152857E-04 -1.177175E-03 -1.314592E-03 -6.013661E-04 A14
-5.051600E-10 6.604615E-08 -9.734019E-04 5.487286E-05 1.370522E-04
2.143097E-04 8.792480E-05 A16 3.380000E-12 -1.301630E-09
2.478373E-04 -2.919339E-06 -5.974015E-06 -1.399894E-05
-4.770527E-06 Surface # 9 10 11 12 13 k 6.200000E+01 -2.114008E+01
-7.699904E+00 -6.155476E+01 -3.120467E-01 A4 -1.359965E-01
-1.263831E-01 -1.927804E-02 -2.492467E-02 -3.521844E-02 A6
6.628518E-02 6.965399E-02 2.478376E-03 -1.835360E-03 5.629654E-03
A8 -2.129167E-02 -2.116027E-02 1.438785E-03 3.201343E-03
-5.466925E-04 A10 4.396344E-03 3.819371E-03 -7.013749E-04
-8.990757E-04 2.231154E-05 A12 -5.542899E-04 -4.040283E-04
1.253214E-04 1.245343E-04 5.548990E-07 A14 3.768879E-05
2.280473E-05 -9.943196E-06 -8.788363E-06 -9.396920E-08 A16
-1.052467E-06 -5.165452E-07 2.898397E-07 2.494302E-07
2.728360E-09
[0169] Table 1 is the detailed structure data to the first
embodiment in FIG. 1A, wherein the unit of the curvature radius,
the thickness, the distance, and the focal length is millimeters
(mm). Surfaces 0-16 illustrate the surfaces from the object side to
the image plane in the optical image capturing system. Table 2 is
the aspheric coefficients of the first embodiment, wherein k is the
conic coefficient in the aspheric surface formula, and A1-A20 are
the first to the twentieth order aspheric surface coefficient.
Besides, the tables in the following embodiments are referenced to
the schematic view and the aberration graphs, respectively, and
definitions of parameters in the tables are equal to those in the
Table 1 and the Table 2, so the repetitious details will not be
given here.
The Second Embodiment
Embodiment 2
[0170] Please refer to FIG. 2A, FIG. 2B, FIGS. 2C, and 2D. FIG. 2A
is a schematic view of the optical image capturing system according
to the second embodiment of the present application, FIG. 2B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the second
embodiment of the present application, FIG. 2C is a characteristic
diagram of modulation transfer of a visible light according to the
second embodiment of the present application, and FIG. 2D is a
characteristic diagram of modulation transfer of infrared rays
according to the second embodiment of the present application. As
shown in FIG. 2A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
210, a second lens element 220, a third lens element 230, an
aperture stop 200, a fourth lens element 240, a fifth lens element
250, a sixth lens element 260, an IR-bandstop filter 280, an image
plane 290, and an image sensing device 292.
[0171] The first lens element 210 has negative refractive power and
it is made of glass material. The first lens element 210 has a
convex object-side surface 212 and a concave image-side surface
214, and both of the object-side surface 212 and the image-side
surface 214 are aspheric.
[0172] The second lens element 220 has negative refractive power
and it is made of plastic material. The second lens element 220 has
a concave object-side surface 222 and a concave image-side surface
224, and both of the object-side surface 222 and the image-side
surface 224 are aspheric.
[0173] The third lens element 230 has positive refractive power and
it is made of glass material. The third lens element 230 has a
convex object-side surface 232 and a convex image-side surface 234,
and both of the object-side surface 232 and the image-side surface
234 are aspheric.
[0174] The fourth lens element 240 has positive refractive power
and it is made of plastic material. The fourth lens element 240 has
a convex object-side surface 242 and a convex image-side surface
244, and both of the object-side surface 242 and the image-side
surface 244 are aspheric. The image-side surface 244 has an
inflection point.
[0175] The fifth lens element 250 has negative refractive power and
it is made of plastic material. The fifth lens element 250 has a
concave object-side surface 252 and a concave image-side surface
254, and both of the object-side surface 252 and the image-side
surface 254 are aspheric. The object-side surface 252 has an
inflection point.
[0176] The sixth lens element 260 has positive refractive power and
it is made of plastic material. The sixth lens element 260 has a
convex object-side surface 262 and a concave image-side surface
264. Hereby, the back focal length is reduced to miniaturize the
lens element effectively. In addition, the angle of incident with
incoming light from an off-axis view field can be suppressed
effectively and the aberration in the off-axis view field can be
corrected further.
[0177] The IR-bandstop filter 280 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 260 and the image
plane 290.
[0178] In the optical image capturing system of the second
embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relations are
satisfied: .SIGMA.PP=31.109 mm and f4/.SIGMA.PP=0.250. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0179] In the optical image capturing system of the second
embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relation is
satisfied: .SIGMA.NP=-32.294 mm and f1/.SIGMA.NP=0.456. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0180] Please refer to the following Table 3 and Table 4.
The detailed data of the optical image capturing system of the
second embodiment is as shown in Table 3.
TABLE-US-00003 TABLE 3 Data of the optical image capturing system f
= 3.145 mm; f/HEP = 1.4; HAF = 100 deg Surface Abbe Focal #
Curvature Radius Thickness Material Index # length 0 Object Plano
At infinity 1 Lens 1 54.84844558 2.833 Glass 1.723 37.99 -14.737 2
8.766898202 6.560 3 Lens 2 -25.95359571 2.259 Plastic 1.565 58.00
-10.381 4 7.848619572 4.037 5 Lens 3 61.93181546 3.281 Glass 1.904
31.32 15.035 6 -17.09179452 11.383 7 Ape. stop Plano -0.259 8 Lens
4 6.990367353 2.236 Plastic 1.565 58.00 7.786 9 -10.58231944 0.533
10 Lens 5 -163.3075758 0.917 Plastic 1.650 21.40 -7.175 11
4.853016038 0.852 12 Lens 6 4.681969379 4.914 Plastic 1.565 58.00
8.288 13 895.826502 1.000 14 IR-bandstop Plano 0.850 BK_7 1.517
64.13 filter 15 Plano 2.668 16 Image plane Plano Reference
wavelength (d-line) = 555 nm
As for the parameters of the aspheric surfaces of the second
embodiment, reference is made to Table 4.
TABLE-US-00004 TABLE 4 Aspheric Coefficients Surface # 3 4 5 6 8 9
10 k 5.353503E-02 -1.239962E-01 0.000000E+00 0.000000E+00
-1.190640E+00 -2.226796E+01 -5.000103E+01 A4 -5.497483E-05
-5.198869E-06 0.000000E+00 0.000000E+00 3.807807E-04 -3.995256E-04
-9.664339E-04 A6 -4.195174E-07 -3.396746E-06 0.000000E+00
0.000000E+00 1.980718E-05 1.438412E-05 1.820277E-06 A8
-1.363300E-09 -2.844401E-08 0.000000E+00 0.000000E+00 -1.059528E-06
-3.794477E-07 2.757532E-06 A10 2.593000E-11 -1.631400E-10
0.000000E+00 0.000000E+00 2.189356E-08 1.017924E-08 -6.801903E-08
Surface # 11 12 13 k -3.989494E+00 -7.024590E-01 5.000000E+01 A4
5.610474E-05 -1.037912E-03 1.062369E-03 A6 2.109201E-01
2.422515E-05 1.166398E-05 A8 1.917188E-06 -1.369660E-07
-3.215606E-07 A10 -2.983040E-09 -3.542670E-09 -1.989203E-08
[0181] In the second embodiment, the presentation of the aspheric
surface formula is similar to that in the first embodiment.
Besides, the definitions of parameters in following tables are
equal to those in the first embodiment, so the repetitious details
will not be given here.
[0182] The following contents may be deduced from Table 3 and Table
4.
TABLE-US-00005 Second embodiment (Primary reference wavelength =
587.5 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 2.894 2.364 3.234 2.088
1.048 4.782 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6
1.021 1.047 0.986 0.934 1.143 0.973 ETL EBL EIN EIR PIR EIN/ETL
44.051 4.515 39.536 0.998 1.000 0.897 SETP/EIN EIR/PIR SETP STP
SETP/STP BL 0.415 0.998 16.410 16.440 0.998 4.518 ED12 ED23 ED34
ED45 ED56 EBL/BL 6.463 3.966 11.252 0.585 0.860 0.9993 SED SIN
SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 23.126 23.105 1.001 1.630
0.352 19.248 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56
ED45/ED56 0.985 0.983 1.011 1.097 1.010 0.680 | f/f1 | | f/f2 | |
f/f3 | | f/f4 | | f/f5 | | f/f6 | 0.21341 0.30295 0.20918 0.40396
0.43834 0.37950 .SIGMA. PPR .SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR |
IN12/f IN56/f TP4/(IN34 + TP4 + IN45) 0.99264 0.95470 1.03973
2.08572 0.27084 0.16095 | f1/f2 | | f2/f3 | (TP1 + IN12)/TP2 (TP6 +
IN56)/TP5 1.41957 0.69047 4.15905 6.28697 HOS InTL HOS/HOI InS/HOS
ODT % TDT % 44.06280 39.54490 11.01570 0.31115 -116.46300 116.46300
HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 0.00000 0.00000
0.00000 0.00000 TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 |
InRS62 |/TP6 0.68839 1.46716 2.21993 0.34684 0.45180 0.07059 MTFE0
MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.84 0.8 0.78 0.64 0.6 0.53 MTFI0
MTFI3 MTFI7 0.72 0.65 0.72
[0183] The following contents may be deduced from Table 3 and Table
4.
TABLE-US-00006 Related inflection point values of second embodiment
(Primary reference wavelength: 555 nm) HIF421 4.0677 HIF421/HOI
1.0169 SGI421 -0.5752 | SGI421 |/(| SGI421 | + TP4) 0.2046 HIF511
3.4366 HIF511/HOI 0.8591 SGI511 -0.1297 | SGI511 |/(| SGI511 | +
TP5) 0.1239
The Third Embodiment
Embodiment 3
[0184] Please refer to FIG. 3A, FIG. 3B, FIGS. 3C, and 3D. FIG. 3A
is a schematic view of the optical image capturing system according
to the third embodiment of the present application, FIG. 3B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the third
embodiment of the present application, FIG. 3C is a characteristic
diagram of modulation transfer of a visible light according to the
third embodiment of the present application, and FIG. 3D is a
characteristic diagram of modulation transfer of infrared rays
according to the third embodiment of the present application. As
shown in FIG. 3A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
310, a second lens element 320, a third lens element 330, an
aperture stop 300, a fourth lens element 340, a fifth lens element
350, a sixth lens element 360, an IR-bandstop filter 380, an image
plane 390, and an image sensing device 392.
[0185] The first lens element 310 has negative refractive power and
it is made of glass material. The first lens element 310 has a
convex object-side surface 312 and a concave image-side surface
314, and both of the object-side surface 312 and the image-side
surface 314 are aspheric.
[0186] The second lens element 320 has negative refractive power
and it is made of plastic material. The second lens element 320 has
a convex object-side surface 322 and a concave image-side surface
324, and both of the object-side surface 322 and the image-side
surface 324 are aspheric and have an inflection point. The
object-side surface 322 has an inflection point.
[0187] The third lens element 330 has positive refractive power and
it is made of glass material. The third lens element 330 has a
convex object-side surface 332 and a concave image-side surface
334, and both of the object-side surface 332 and the image-side
surface 334 are aspheric.
[0188] The fourth lens element 340 has positive refractive power
and it is made of plastic material. The fourth lens element 340 has
a convex object-side surface 342 and a convex image-side surface
344, and both of the object-side surface 342 and the image-side
surface 344 are aspheric. The object-side surface 342 has an
inflection point.
[0189] The fifth lens element 350 has positive refractive power and
it is made of plastic material. The fifth lens element 350 has a
convex object-side surface 352 and a convex image-side surface 354,
and both of the object-side surface 352 and the image-side surface
354 are aspheric.
[0190] The sixth lens element 360 has positive refractive power and
it is made of plastic material. The sixth lens element 360 has a
convex object-side surface 362 and a concave image-side surface
364. The object-side surface 362 and the image-side surface 364
both have an inflection point. Hereby, the back focal length is
reduced to miniaturize the lens element effectively. In addition,
the angle of incident with incoming light from an off-axis view
field can be suppressed effectively and the aberration in the
off-axis view field can be corrected further.
[0191] The IR-bandstop filter 380 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 360 and the image
plane 390.
[0192] In the optical image capturing system of the third
embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relation is
satisfied: .SIGMA.PP=83.868 mm and f5/.SIGMA.PP=0.115. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0193] In the optical image capturing system of the third
embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relation is
satisfied: .SIGMA.NP=-23.515 mm and f1/.SIGMA.NP=0.695. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0194] Please refer to the following Table 5 and Table 6.
The detailed data of the optical image capturing system of the
third embodiment is as shown in Table 5.
TABLE-US-00007 TABLE 5 Data of the optical image capturing system f
= 2.46546 mm; f/HEP 1.6; HAF = 89.9432 deg Abbe Focal Surface#
Curvature Radius Thickness Material Index # length 0 Object Plano
At infinity 1 Lens 1 58.03346755 1.361 Glass 1.497 81.61 -16.334 2
7.080166733 3.452 3 Lens 2 21.57315989 1.241 Plastic 1.565 58.00
-7.181 4 3.352706221 2.381 5 Lens 3 11.50202447 9.858 Glass 2.003
19.32 35.994 6 9.563819405 0.161 7 Ape. Stop Plano -0.063 8 Lens 4
10.29883571 2.175 Plastic 1.565 58.00 6.682 9 -5.532072655 0.050 10
Lens 5 8.11917442 2.839 Plastic 1.565 58.00 9.607 11 -14.44016567
2.451 12 Lens 6 5.371272526 2.316 Plastic 1.650 21.40 31.585 13
6.014934648 0.700 14 IR-bandstop Plano 0.850 BK_7 1.517 64.13
filter 15 Plano 0.227 16 Image plane Plano Reference wavelength
(d-line) = 555 nm
As for the parameters of the aspheric surfaces of the third
embodiment, reference is made to Table 6.
TABLE-US-00008 TABLE 6 Aspheric Coefficients Surface # 3 4 5 6 8 9
10 k -8.195718E-01 -5.688209E-01 0.000000E+00 0.000000E+00
-1.764587E+01 2.567979E+00 -2.473890E+00 A4 -1.325938E-05
9.593373E-05 0.000000E+00 0.000000E+00 -1.779197E-03 2.591703E-04
-2.143595E-04 A6 -2.112071E-06 -4.373067E-05 0.000000E+00
0.000000E+00 -1.872811E-04 2.262367E-05 2.139881E-05 A8
-6.328691E-08 4.055646E-07 0.000000E+00 0.000000E+00 -6.426439E-05
-7.991506E-07 -6.463125E-07 A10 -5.871000E-11 -1.636916E-07
0.000000E+00 0.000000E+00 9.550148E-07 6.764353E-07 -1.103405E-07
Surface # 11 12 13 k 5.795397E+00 -4.261439E+00 -2.712638E+00 A4
-1.823100E-03 -1.445403E-03 -1.528489E-03 A6 4.687521E-05
-1.829623E-04 -1.042870E-04 A8 -1.739954E-06 -1.048651E-05
-3.069272E-06 A10 -3.340022E-08 -4.245459E-07 1.466901E-07
[0195] The presentation of the aspheric surface formula in the
third embodiment is similar to that in the first embodiment.
Besides, the definitions of parameters in following tables are
equal to those in the first embodiment so the repetitious details
will not be given here.
[0196] The following contents may be deduced from Table 5 and Table
6.
TABLE-US-00009 Third embodiment (Primary reference wavelength: 555
nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 1.398 1.316 9.863 2.093 2.781
2.310 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.027
1.061 1.001 0.962 0.980 0.998 ETL EBL EIN EIR PIR EIN/ETL 29.995
1.729 28.265 0.652 0.700 0.942 SETP/EIN EIR/PIR SETP STP SETP/STP
BL 0.699 0.931 19.762 19.789 0.999 1.778 ED12 ED23 ED34 ED45 ED56
EBL/BL 3.424 2.318 0.095 0.141 2.526 0.9724 SED SIN SED/SIN
ED12/ED23 ED23/ED34 ED34/ED45 8.504 8.433 1.008 1.477 24.497 0.672
ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56 0.992
0.973 0.964 2.818 1.031 0.056 | f/f1 | | f/f2 | | f/f3 | | f/f4 | |
f/f5 | | f/f6 | 0.15094 0.34334 0.06850 0.36898 0.25664 0.07806
.SIGMA. PPR .SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR | IN12/f IN56/f
TP4/(IN34 + TP4 + IN45) 0.51553 0.75092 0.68653 1.40014 0.99429
0.93622 | f1/f2 | | f2/f3 | (TP1 + IN12)/TP2 (TP6 + IN56)/TP5
2.27473 0.19950 3.87946 1.67938 HOS InTL HOS/HOI InS/HOS ODT % TDT
% 30.00000 28.22210 7.50000 0.38489 -100.16100 73.49650 HVT51 HVT52
HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 2.67069 3.18601 0.79650 0.10620
TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 | InRS62 |/TP6 0.12586
4.53146 0.35273 0.41769 0.15231 0.18036 MTFE0 MTFE3 MTFE7 MTFQ0
MTFQ3 MTFQ7 0.7 0.57 0.55 0.43 0.28 0.28 MTFI0 MTFI3 MTFI7 0.86 0.8
0.58
[0197] The following contents may be deduced from Table 5 and Table
6.
TABLE-US-00010 Related inflection point values of third embodiment
(Primary reference wavelength: 555 nm) HIF221 4.2856 HIF221/HOI
1.0714 SGI221 0.401548 | SGI221 |/(| SGI221 | + TP2) 0.2445 HIF411
1.2974 HIF411/HOI 0 3243 SGI411 0.0705 | SGI411 |/(| SGI411 | +
TP4) 0.0314 HIF611 1.7312 HIF611/HOI 0.4328 SGI611 0.2398 | SGI611
|/(| SGI611 | + TP6) 0.0938 HIF621 1.9871 HIF621/HOI 0.4968 SGI621
0.2833 | SGI621 |/(| SGI621 | + TP6) 0.1090
The Fourth Embodiment
Embodiment 4
[0198] Please refer to FIG. 4A, FIG. 4B, FIGS. 4C, and 4D. FIG. 4A
is a schematic view of the optical image capturing system according
to the fourth embodiment of the present application, FIG. 4B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the fourth
embodiment of the present application, FIG. 4C is a characteristic
diagram of modulation transfer of a visible light according to the
fourth embodiment of the present application, and FIG. 4D is a
characteristic diagram of modulation transfer of infrared rays
according to the fourth embodiment of the present application. As
shown in FIG. 4A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
410, a second lens element 420, a third lens element 430, an
aperture stop 400, a fourth lens element 440, a fifth lens element
450, a sixth lens element 460, an IR-bandstop filter 480, an image
plane 490, and an image sensing device 492.
[0199] The first lens element 410 has negative refractive power and
it is made of glass material. The first lens element 410 has a
convex object-side surface 412 and a concave image-side surface
414, and both of the object-side surface 412 and the image-side
surface 414 are aspheric.
[0200] The second lens element 420 has negative refractive power
and it is made of plastic material. The second lens element 420 has
a convex object-side surface 422 and a concave image-side surface
424, and both of the object-side surface 422 and the image-side
surface 424 are aspheric. The object-side surface 422 has an
inflection point.
[0201] The third lens element 430 has negative refractive power and
it is made of glass material. The third lens element 430 has a
convex object-side surface 432 and a concave image-side surface
434, and both of the object-side surface 432 and the image-side
surface 434 are aspheric.
[0202] The fourth lens element 440 has positive refractive power
and it is made of plastic material. The fourth lens element 440 has
a convex object-side surface 442 and a convex image-side surface
444, and both of the object-side surface 442 and the image-side
surface 444 are aspheric.
[0203] The fifth lens element 450 has positive refractive power and
it is made of plastic material. The fifth lens element 450 has a
convex object-side surface 452 and a convex image-side surface 454,
and both of the object-side surface 452 and the image-side surface
454 are aspheric. The object-side surface 452 has an inflection
point
[0204] The sixth lens element 460 has negative refractive power and
it is made of plastic material. The sixth lens element 460 has a
concave object-side surface 462 and a convex image-side surface
464. The object-side surface 462 has two inflection points and the
image-side surface 464 has an inflection point. Hereby, the back
focal length is reduced to miniaturize the lens element
effectively. In addition, the angle of incident with incoming light
from an off-axis view field can be suppressed effectively and the
aberration in the off-axis view field can be corrected further.
[0205] The IR-bandstop filter 480 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 460 and the image
plane 490.
[0206] In the optical image capturing system of the fourth
embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relation is
satisfied: .SIGMA.PP=13.152 mm and f3/.SIGMA.PP=0.469. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0207] In the optical image capturing system of the fourth
embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relation is
satisfied: .SIGMA.NP=-89.341 mm and f1/.SIGMA.NP=0.125. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0208] Please refer to the following Table 7 and Table 8.
The detailed data of the optical image capturing system of the
fourth embodiment is as shown in Table 7.
TABLE-US-00011 TABLE 7 Data of the optical image capturing system f
= 3.458 mm; f/HEP = 1.6; HAF = 70.010 deg Focal Surface# Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano At
infinity 1 Lens 1 25.82143808 0.854 Glass 1.497 81.61 -11.166 2
4.526040094 1.933 3 Lens 2 6.048242554 0.696 Plastic 1.565 58.00
-8.705 4 2.604224743 3.998 5 Lens 3 24.02357352 3.274 Glass 2.003
19.32 -58.223 6 15.89590754 0.684 7 Ape. Stop Plano -0.454 8 Lens 4
9.770584895 1.611 Plastic 1.565 58.00 6.986 9 -6.260698691 0.833 10
Lens 5 7.867856365 5.055 Plastic 1.565 58.00 6.166 11 -4.826558934
0.076 12 Lens 6 -4.233384205 0.965 Plastic 1.650 21.40 -11.246 13
-10.84267962 0.500 14 IR-bandstop Plano 0.850 BK_7 1.517 64.13
filter 15 Plano 4.126 16 Image plane Plano Reference wavelength
(d-line) = 555 nm
As for the parameters of the aspheric surfaces of the fourth
embodiment, reference is made to Table 8.
TABLE-US-00012 TABLE 8 Aspheric Coefficients Surface # 3 4 5 6 8 9
10 k -2.895753E+00 -5.305419E-01 0.000000E+00 0.000000E+00
1.287252E+00 -7.238133E-02 -1.102549E+00 A4 -6.872493E-04
-5.196963E-04 0.000000E+00 0.000000E+00 4.118629E-04 8.346616E-05
-3.694356E-04 A6 -5.713381E-05 -9.126514E-05 0.000000E+00
0.000000E+00 -1.136292E-05 3.769059E-06 -6.297694E-05 A8
-4.922138E-07 7.401893E-06 0.000000E+00 0.000000E+00 -2.276806E-06
-9.982125E-07 2.259523E-06 A10 4.379280E-08 -1.324272E-06
0.000000E+00 0.000000E+00 9.598033E-08 7.401288E-08 -4.631574E-07
Surface # 11 12 13 k -3.507269E-02 8.157804E-02 -1.679229E+01 A4
-3.892551E-04 2.276216E-03 1.527674E-03 A6 4.799095E-05
1.211605E-04 6.710888E-05 A8 8.167494E-06 -4.236754E-07
-4.237391E-06 A10 -3.644669E-07 3.715526E-07 4.259586E-08
[0209] The presentation of the aspheric surface formula in the
fourth embodiment is similar to that in the first embodiment.
Besides the definitions of parameters in following tables are equal
to those in the first embodiment so the repetitious details will
not be given here.
[0210] The following contents may be deduced from Table 7 and Table
8.
TABLE-US-00013 Fourth embodiment (Primary reference wavelength:
587.5 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.962 0.830 3.286 1.456
4.858 1.053 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6
1.127 1.193 1.004 0.904 0.961 1.091 ETL EBL EIN EIR PIR EIN/ETL
24.977 5.526 19.451 0.550 0.500 0.779 SETP/EIN EIR/PIR SETP STP
SETP/STP BL 0.640 1.099 12.445 12.454 0.999 5.477 ED12 ED23 ED34
ED45 ED56 EBL/BL 1.896 3.794 0.254 1.000 0.062 1.0089 SED SIN
SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 7.006 7.070 0.991 0.500
14.960 0.254 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56
ED45/ED56 0.981 0.949 1.104 1.201 0.813 16.188 | f/f1 | | f/f2 | |
f/f3 | | f/f4 | | f/f5 | | f/f6 | 0.30968 0.39723 0.05939 0.49499
0.56081 0.30749 .SIGMA. PPR .SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR |
IN12/f IN56/f TP4/(IN34 + TP4 + IN45) 0.86187 1.26773 0.67985
1.55900 0.02199 0.60248 | f1/f2 | | f2/f3 | (TP1 + IN12)/TP2 (TP6 +
IN56)/TP5 1.28271 0.14952 4.00528 0.20598 HOS InTL HOS/HOI InS/HOS
ODT % TDT % 25.00000 19.52340 6.25000 0.54248 -57.90180 41.26080
HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 3.41625 0 0.00000
2.92711 0.73178 0.11708 TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61
|/TP6 | InRS62 |/TP6 0.21256 2.03236 -1.30996 -0.15201 1.35735
0.15751 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.88 0.83 0.76 0.72
0.56 0.5 MTFI0 MTFI3 MTFI7 0.8 0.79 0.53
[0211] The following contents may be deduced from Table 7 and Table
8.
TABLE-US-00014 Related inflection point values of fourth embodiment
(Primary reference wavelength: 555 nm) HIF211 2.4383 HIF211/HOI
0.6096 SGI211 0.4220 | SGI211 |/(| SGI211 | + TP2) 0.3775 HIF511
2.4653 HIF511/HOI 0.6163 SGI511 0.3567 | SGI511 |/(| SGI511 | +
TP5) 0.0659 HIF611 3.1475 HIF611/HOI 0.7869 SGI611 -1.0595 | SGI611
|/(| SGI611 | + TP6) 0.5233 HIF612 3.2519 HIF612/HOI 0.8130 SGI612
-1.1181 | SGI612 |/(| SGI612 | + TP6) 0.5367 HIF621 1.6270
HIF621/HOI 0.4068 SGI621 -0.1011 | SGI621 |/(| SGI621 | + TP6)
0.0948
The Fifth Embodiment
Embodiment 5
[0212] Please refer to FIG. 5A, FIG. 5B, FIGS. 5C, and 5D. FIG. 5A
is a schematic view of the optical image capturing system according
to the fifths embodiment of the present application, FIG. 5B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the fifth
embodiment of the present application, FIG. 5C is a characteristic
diagram of modulation transfer of a visible light according to the
fifth embodiment of the present application and FIG. 5D is a
characteristic diagram of modulation transfer of infrared rays
according to the fifth embodiment of the present application. As
shown in FIG. 5A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
510, a second lens element 520, a third lens element 530, an
aperture stop 500, a fourth lens element 540, a fifth lens element
550, a sixth lens element 560, an IR-bandstop filter 580, an image
plane 590, and an Image sensing device 592.
[0213] The first lens element 510 has negative refractive power and
it is made of glass material. The first lens element 510 has a
convex object-side surface 512 and a concave image-side surface
514, and both of the object-side surface 512 and the image-side
surface 514 are aspheric.
[0214] The second lens element 520 has negative refractive power
and it is made of plastic material. The second lens element 520 has
a convex object-side surface 522 and a concave image-side surface
524, and both of the object-side surface 522 and the image-side
surface 524 are aspheric.
[0215] The third lens element 530 has positive refractive power and
it is made of glass material. The third lens element 530 has a
convex object-side surface 532 and a concave image-side surface
534, and both of the object-side surface 532 and the image-side
surface 534 are aspheric.
[0216] The fourth lens element 540 has positive refractive power
and it is made of plastic material. The fourth lens element 540 has
a concave object-side surface 542 and a convex image-side surface
544, and both of the object-side surface 542 and the image-side
surface 544 are aspheric.
[0217] The fifth lens element 550 has positive refractive power and
it is made of plastic material. The fifth lens element 550 has a
convex object-side surface 552 and a convex image-side surface 554,
and both of the object-side surface 552 and the image-side surface
554 are aspheric.
[0218] The sixth lens element 560 has negative refractive power and
it is made of plastic material. The sixth lens element 560 has a
concave object-side surface 562 and a convex image-side surface
564. The image-side surface 564 has an inflection point. Hereby,
the back focal length is reduced to miniaturize the lens element
effectively. In addition, the angle of incident with incoming light
from an off-axis view field can be suppressed effectively and the
aberration in the off-axis view field can be corrected further.
[0219] The IR-bandstop filter 580 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 560 and the image
plane 590.
[0220] In the optical image capturing system of the fifth
embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relation is
satisfied: .SIGMA.PP=29.682 mm and f5/.SIGMA.PP=0.202. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0221] In the optical image capturing system of the fifth
embodiment, sum of focal lengths of all lens elements with negative
refractive power is .SIGMA.NP. The following relation is satisfied:
.SIGMA.NP=-29.887 mm and f1/.SIGMA.NP=0.324. Hereby, it is
favorable for allocating the negative refractive power of a single
lens element to other negative lens elements.
[0222] Please refer to the following Table 9 and Table 10.
The detailed data of the optical image capturing system of the
fifth embodiment is as shown in Table 9.
TABLE-US-00015 TABLE 9 Data of the optical image capturing system f
= 2.555 mm; f/HEP = 2.0; HAF = 89.943 deg Focal Surface# Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano At
infinity 1 Lens 1 51.97800961 1.201 Glass 1.658 50.85 -9.695 2
5.651190575 2.382 3 Lens 2 13.5556444 0.872 Plastic 1.565 58.00
-7.596 4 3.191412534 1.974 5 Lens 3 10.47613889 9.277 Glass 1.923
20.88 15.865 6 20.6643315 0.571 7 Ape. Stop Plano 0.547 8 Lens 4
-24.43347982 1.524 Plastic 1.565 58.00 7.814 9 -3.833704369 0.239
10 Lens 5 7.62053561 3.675 Plastic 1.535 56.30 6.003 11
-4.641996255 0.050 12 Lens 6 -4.540444442 3.615 Plastic 1.650 21.40
-12.596 13 -13.26941451 1.000 14 IR-bandstop Plano 0.850 BK_7 1.517
64.13 filter 15 Plano 2.224 16 Image plane Plano Reference
wavelength (d-line) = 555 nm
As for the parameters of the aspheric surfaces of the fifth
embodiment, reference is made to Table 10.
TABLE-US-00016 TABLE 10 Aspheric Coefficients Surface # 3 4 5 6 8 9
10 k 3.767507E+00 -4.946616E-01 0.000000E+00 0.000000E+00
5.000000E+01 9.353208E-01 9.895043E-02 A4 3.346228E-05
-6.031017E-05 0.000000E+00 0.000000E+00 -4.776330E-03 1.916310E-04
-4.175863E-04 A6 -9.589480E-06 -2.760539E-05 0.000000E+00
0.000000E+00 -1.146837E-03 -2.317815E-04 1.130998E-05 A8
-2.197365E-07 1.842094E-06 0.000000E+00 0.000000E+00 2.099919E-04
5.069589E-05 -4.010780E-07 A10 -2.765640E-09 -3.821320E-07
0.000000E+00 0.000000E+00 -5.788840E-05 -7.699083E-06 -9.850837E-08
Surface # 11 12 13 k 1.836605E-02 -5.150400E-01 -2.185800E+01 A4
-4.423125E-04 1.245521E-03 1.402242E-03 A6 4.347633E-05
4.719135E-05 9.574243E-05 A8 3.818666E-06 -5.371631E-06
-5.868531E-06 A10 -1.905796E-08 3.127663E-07 1.639223E-07
[0223] The presentation of the aspheric surface formula in the
fifth embodiment is similar to that in the first embodiment.
Besides the definitions of parameters in following tables are equal
to those in the first embodiment so the repetitious details will
not be given here.
[0224] The following contents may be deduced from Table 9 and Table
10.
TABLE-US-00017 Fifth embodiment (Primary reference wavelength:
587.5 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 1.240 0.931 9.266 1.471
3.590 3.651 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6
1.032 1.067 0.999 0.965 0.977 1.010 ETL EBL EIN EIR PIR EIN/ETL
29.995 4.092 25.904 1.018 1.000 0.864 SETP/EIN EIR/PIR SETP STP
SETP/STP BL 0.778 1.018 20.148 20.165 0.998 4.074 ED12 ED23 ED34
ED45 ED56 EBL/BL 2.356 1.920 1.094 0.335 0.049 1.0044 SED SIN
SED/SIN ED12/ED23 ED23/ED34 ED34/ED45 5.755 5.761 0.999 1.227 1.755
3.265 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56
0.989 0.973 0.979 1.403 0.988 6.787 | f/f1 | | f/f2 | | f/f3 | |
f/f4 | | f/f5 | | f/f6 | 0.28772 0.36725 0.17583 0.35701 0.46470
0.22146 .SIGMA. PPR .SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR | IN12/f
IN56/f TP4/(IN34 + TP4 + IN45) 0.75431 1.11968 0.67369 0.85372
0.01792 0.52921 | f1/f2 | | f2/f3 | (TP1 + IN12)/TP2 (TP6 +
IN56)/TP5 1.27639 0.47879 4.10654 0.99746 HOS InTL HOS/HOI InS/HOS
ODT % TDT % 30.00000 25.92590 7.50000 0.45745 -100.13100 76.39690
HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 0.00000 2.65404
0.66351 0.08847 TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 |
InRS62 |/TP6 0.09404 6.08658 -0.58146 -0.13337 0.16083 0.03689
MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3 MTFQ7 0.88 0.88 0.84 0.72 0.73 0.65
MTFI0 MTFI3 MTFI7 0.83 0.83 0.6
[0225] The following contents may be deduced from Table 9 and Table
10.
TABLE-US-00018 Related inflection point values of fifth embodiment
(Primary reference wavelength: 555 nm) HIF621 1.5384 HIF621/HOI
0.3846 SGI621 -0.0747 | SGI621 |/(| SGI621 | + TP6) 0.0202 HIF622
0.0000 HIF622/HOI 0.0000 SGI622 0.0000 | SGI622 |/(| SGI622 | +
TP6) 0.0000 HIF623 0.0000 HIF623/HOI 0.0000 SGI623 0.0000 | SGI623
|/(| SGI623 | + TP6) 0.0000 HIF624 0.0000 HIF624/HOI 0.0000 SGI624
0.0000 | SGI624 |/(| SGI624 | + TP6) 0.0000
The Sixth Embodiment
Embodiment 6
[0226] Please refer to FIG. 6A, FIG. 6B, FIGS. 6C, and 6D. FIG. 6A
is a schematic view of the optical image capturing system according
to the sixth Embodiment of the present application, FIG. 6B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the sixth
Embodiment of the present application, FIG. 6C is a characteristic
diagram of modulation transfer of a visible light according to the
sixth embodiment of the present application and FIG. 6D is a
characteristic diagram of modulation transfer of infrared rays
according to the sixth embodiment of the present application. As
shown in FIG. 6A, in order from an object side to an image side,
the optical image capturing system includes a first lens element
610, a second lens element 620, a third lens element 630, an
aperture stop 600, a fourth lens element 640, a fifth lens element
650, a sixth lens element 660, an IR-bandstop filter 680, an image
plane 690, and an image sensing device 692.
[0227] The first lens element 610 has negative refractive power and
it is made of glass material. The first lens element 610 has a
convex object-side surface 612 and a concave image-side surface
614, and both of the object-side surface 612 and the image-side
surface 614 are aspheric.
[0228] The second lens element 620 has negative refractive power
and it is made of plastic material. The second lens element 620 has
a convex object-side surface 622 and a concave image-side surface
624, and both of the object-side surface 622 and the image-side
surface 624 are aspheric. The object-side surface 622 has an
inflection point.
[0229] The third lens element 630 has positive refractive power and
it is made of glass material. The third lens element 630 has a
convex object-side surface 632 and a concave image-side surface
634, and both of the object-side surface 632 and the image-side
surface 634 are aspheric.
[0230] The fourth lens element 640 has positive refractive power
and it is made of plastic material. The fourth lens element 640 has
a convex object-side surface 642 and a convex image-side surface
644, and both of the object-side surface 642 and the image-side
surface 644 are aspheric. The object-side surface 642 has an
inflection point.
[0231] The fifth lens element 650 has positive refractive power and
it is made of plastic material. The fifth lens element 650 has a
convex object-side surface 652 and a convex image-side surface 654,
and both of the object-side surface 652 and the image-side surface
654 are aspheric. The object-side surface 652 has an inflection
point.
[0232] The sixth lens element 660 has negative refractive power and
it is made of plastic material. The sixth lens element 660 has a
concave object-side surface 662 and a convex image-side surface
664. The object-side surface 662 and the image-side surface 664
both have an inflection point. Hereby, the back focal length is
reduced to miniaturize the lens element effectively. In addition,
the angle of incident with incoming light from an off-axis view
field can be suppressed effectively and the aberration in the
off-axis view field can be corrected further.
[0233] The IR-bandstop filter 680 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 660 and the image
plane 690.
[0234] In the optical image capturing system of the sixth
Embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relations are
satisfied: .SIGMA.PP=57.058 mm and f5/.SIGMA.PP=0.115. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0235] In the optical image capturing system of the sixth
Embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relations are
satisfied: .SIGMA.NP=-33.656 mm and f1/.SIGMA.NP=0.250. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0236] Please refer to the following Table 11 and Table 12.
The detailed data of the optical image capturing system of the
sixth Embodiment is as shown in Table 11.
TABLE-US-00019 TABLE 11 Data of the optical image capturing system
f = 3.361 mm; f/HEP = 2.0; HAF = 70.000 deg Focal Surface#
Curvature Radius Thickness Material Index Abbe # length 0 Object
Plano At infinity 1 Lens 1 21.44003587 0.804 Glass 1.639 44.87
-8.424 2 4.254861863 1.908 3 Lens 2 7.545155267 0.593 Plastic 1.565
58.00 -8.443 4 2.844907775 1.438 5 Lens 3 9.452773017 6.341 Glass
2.003 19.32 44.141 6 7.944762107 0.720 7 Ape. Stop Plano 0.166 8
Lens 4 9.423215068 1.693 Plastic 1.565 58.00 6.360 9 -5.458243499
1.313 10 Lens 5 5.485715271 3.292 Plastic 1.565 58.00 6.557 11
-9.021683561 0.467 12 Lens 6 -6.368176615 1.243 Plastic 1.650 21.40
-16.789 13 -16.28351201 1.000 14 IR-bandstop Plano 0.850 BK_7 1.517
64.13 filter 15 Plano 3.172 16 Image plane Plano Reference
wavelength (d-line) = 555 nm
As for the parameters of the aspheric surfaces of the sixth
Embodiment, reference is made to Table 12.
TABLE-US-00020 TABLE 12 Aspheric Coefficients Surface # 3 4 5 6 8 9
10 k -1.794650E+00 -4.404780E-01 0.000000E+00 0.000000E+00
-2.400412E+00 2.607240E-01 -4.565427E-01 A4 -4.528088E-04
-8.154164E-04 0.000000E+00 0.000000E+00 1.651310E-04 -3.954209E-04
-2.752755E-04 A6 -5.915167E-05 -1.385958E-04 0.000000E+00
0.000000E+00 7.658640E-06 -2.538394E-05 1.079948E-06 A8
-1.949259E-06 -1.259808E-05 0.000000E+00 0.000000E+00 -3.691581E-05
-4.681239E-07 -1.198336E-07 A10 7.900999E-08 -2.641008E-07
0.000000E+00 0.000000E+00 2.661256E-06 -1.286066E-06 -1.261169E-07
Surface # 11 12 13 k 1.157969E+00 -7.027494E-02 -5.000000E+01 A4
-6.203715E-04 1.587615E-05 1.650655E-03 A6 -5.138398E-05
-2.994840E-05 1.048286E-04 A8 2.109533E-06 -2.669175E-06
-2.594832E-06 A10 5.216046E-08 3.710368E-07 -1.231386E-07
[0237] In the sixth Embodiment, the presentation of the aspheric
surface formula is similar to that in the first embodiment.
Besides, the definitions of parameters in following tables are
equal to those in the first embodiment, so the repetitious details
will not be given here.
[0238] The following contents may be deduced from Table 11 and
Table 12.
TABLE-US-00021 Sixth embodiment (Primary reference wavelength: 555
nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.872 0.672 6.348 1.590 3.188
1.278 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.084
1.133 1.001 0.939 0.968 1.029 ETL EBL EIN EIR PIR EIN/ETL 24.984
5.042 19.941 1.020 1.000 0.798 SETP/EIN EIR/PIR SETP STP SETP/STP
BL 0.699 1.020 13.947 13.965 0.999 5.022 ED12 ED23 ED34 ED45 ED56
EBL/BL 1.871 1.351 0.879 1.442 0.451 1.00398 SED SIN SED/SIN
ED12/ED23 ED23/ED34 ED34/ED45 5.994 6.013 0.997 1.385 1.536 0.610
ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56 0.980
0.939 0.992 1.099 0.966 3.200 | f/f1 | | f/f2 | | f/f3 | | f/f4 | |
f/f5 | | f/f6 | 0.39901 0.39812 0.07615 0.52852 0.51261 0.20020
.SIGMA. PPR .SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR | IN12/f IN56/f
TP4/(IN34 + TP4 + IN45) 0.80487 1.30974 0.61453 0.56776 0.13888
0.43497 | f1/f2 | | f2/f3 | (TP1 + IN12)/TP2 (TP6 + IN56)/TP5
0.99776 0.19127 4.57429 0.51935 HOS InTL HOS/HOI InS/HOS ODT % TDT
% 25.00000 19.97760 6.25000 0.52780 -56.67340 40.59210 HVT51 HVT52
HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 0.00000 2.21685 0.55421 0.08867
TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 | InRS62 |/TP6 0.09352
3.74552 -1.00886 0.05125 0.81183 0.04124 MTFE0 MTFE3 MTFE7 MTFQ0
MTFQ3 MTFQ7 0.89 0.86 0.81 0.76 0.66 0.55 MTFI0 MTFI3 MTFI7 0.87
0.85 0.75
[0239] The following contents may be deduced from Table 11 and
Table 12.
TABLE-US-00022 Related inflection point values of sixth Embodiment
(Primary reference wavelength: 555 nm) HIF211 2.4879 HIF211/HOI
0.6220 SGI211 0.3682 | SGI211 |/(| SGI211 | + TP2) 0.3830 HIF411
2.2472 HIF411/HOI 0.5618 SGI411 0.2528 | SGI411 |/(| SGI411 | +
TP4) 0.1299 HIF511 3.4260 HIF511/HOI 0.8565 SGI511 1.0669 | SGI511
|/(| SGI511 | + TP5) 0.2448 HIF611 3.4021 HIF611/HOI 0.8505 SGI611
-0.9938 | SGI611 |/(| SGI611 | + TP6) 0.4444 HIF621 1.2916
HIF621/HOI 0.3229 SGI621 -0.0427 | SGI621 |/(| SGI621 | + TP6)
0.0332
The Seventh Embodiment
Embodiment 7
[0240] Please refer to FIG. 7A and FIG. 7B, FIGS. 7C, and 7D. FIG.
7A is a schematic view of the optical image capturing system
according to the seventh Embodiment of the present application,
FIG. 7B is longitudinal spherical aberration curves, astigmatic
field curves, and an optical distortion curve of the optical image
capturing system in the order from left to right according to the
seventh Embodiment of the present application, FIG. 7C is a
characteristic diagram of modulation transfer of a visible light
according to the seventh embodiment of the present application and
FIG. 7D is a characteristic diagram of modulation transfer of
infrared rays according to the seventh embodiment of the present
application. As shown in FIG. 7A, in order from an object side to
an image side, the optical image capturing system includes an a
first lens element 710, a second lens element 720, aperture stop
700, a third lens element 730, a fourth lens element 740, a fifth
lens element 750, a sixth lens element 760, an IR-bandstop filter
780, an image plane 790, and an image sensing device 792.
[0241] The first lens element 710 has negative refractive power and
it is made of glass material. The first lens element 710 has a
convex object-side surface 712 and a concave image-side surface
714, and both of the object-side surface 712 and the image-side
surface 714 are aspheric.
[0242] The second lens element 720 has positive refractive power
and it is made of plastic material. The second lens element 720 has
a convex object-side surface 722 and a concave image-side surface
724, and both of the object-side surface 722 and the image-side
surface 724 are aspheric.
[0243] The third lens element 730 has positive refractive power and
it is made of glass material. The third lens element 730 has a
convex object-side surface 732 and a convex image-side surface 734,
and both of the object-side surface 732 and the image-side surface
734 are aspheric.
[0244] The fourth lens element 740 has negative refractive power
and it is made of plastic material. The fourth lens element 740 has
a concave object-side surface 742 and a convex image-side surface
744, and both of the object-side surface 742 and the image-side
surface 744 are aspheric. The image-side surface 744 has an
inflection point.
[0245] The fifth lens element 750 has positive refractive power and
it is made of plastic material. The fifth lens element 750 has a
concave object-side surface 752 and a convex image-side surface
754, and both of the object-side surface 752 and the image-side
surface 754 are aspheric. The image-side surface 754 has an
inflection point.
[0246] The sixth lens element 760 has positive refractive power and
it is made of plastic material. The sixth lens element 760 has a
concave object-side surface 762 and a convex image-side surface
764. The image-side surface 764 has an inflection point. Hereby,
the back focal length is reduced to miniaturize the lens element
effectively. In addition, the angle of incident with incoming light
from an off-axis view field can be suppressed effectively and the
aberration in the off-axis view field can be corrected further.
[0247] The IR-bandstop filter 780 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 760 and the image
plane 790.
[0248] In the optical image capturing system of the seventh
Embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relations are
satisfied: .SIGMA.PP=48.184 mm and f5/.SIGMA.PP=0.109. Hereby, it
is favorable for allocating the positive refractive power of a
single lens element to other positive lens elements and the
significant aberrations generated in the process of moving the
incident light can be suppressed.
[0249] In the optical image capturing system of the seventh
Embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relations are
satisfied: .SIGMA.NP=-7.972 mm and f1/.SIGMA.NP=0.665. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0250] Please refer to the following Table 13 and Table 14.
The detailed data of the optical image capturing system of the
seventh Embodiment is as shown in Table 13.
TABLE-US-00023 TABLE 13 Data of the optical image capturing system
f = 3.523 mm; f/HEP = 2.8; HAF = 60.000 deg Focal Surface#
Curvature Radius Thickness Material Index Abbe # length 0 Object
Plano At infinity 1 Lens 1 15.54637378 0.455 Glass 1.497 81.61
-5.302 2 2.235428877 1.350 3 Lens 2 7.400471982 2.199 Plastic 1.650
21.40 28.765 4 10.74916711 0.040 5 Ape. Stop Plano 0.302 6 Lens 3
19.9712207 1.698 Glass 2.001 29.13 2.771 7 -3.106048007 0.142 8
Lens 4 -2.359233218 0.300 Plastic 1.650 21.40 -2.671 9 7.123727492
0.094 10 Lens 5 12.71536658 1.430 Plastic 1.565 58.00 5.232 11
-3.710266833 0.050 12 Lens 6 21.18221651 0.710 Plastic 1.565 58.00
11.416 13 -9.202515419 0.700 14 IR-bandstop Plano 0.850 BK_7 1.517
64.13 filter 15 Plano 3.681 16 Image plane Plano Reference
wavelength (d-line) = 555 nm
As for the parameters of the aspheric surfaces of the seventh
Embodiment, reference is made to Table 14.
TABLE-US-00024 TABLE 14 Aspheric Coefficients Surface # 3 4 6 7 8 9
10 k -1.794650E+00 -4.404780E-01 0.000000E+00 0.000000E+00
-2.400412E+00 2.607240E-01 -4.565427E-01 A4 -4.528088E-04
-8.154164E-04 0.000000E+00 0.000000E+00 1.651310E-04 -3.954209E-04
-2.752755E-04 A6 -5.915167E-05 -1.385958E-04 0.000000E+00
0.000000E+00 7.658640E-06 -2.538394E-05 1.079948E-06 A8
-1.949259E-06 -1.259808E-05 0.000000E+00 0.000000E+00 -3.691581E-05
-4.681239E-07 -1.198336E-07 A10 7.900999E-08 -2.641008E-07
0.000000E+00 0.000000E+00 2.661256E-06 -1.286066E-06 -1.261169E-07
Surface # 11 12 13 k 1.157969E+00 -7.027494E-02 -5.000000E+01 A4
-6.203715E-04 1.587615E-05 1.650655E-03 A6 -5.138398E-05
-2.994840E-05 1.048286E-04 A8 2.109533E-06 -2.669175E-06
-2.594832E-06 A10 5.216046E-08 3.710368E-07 -1.231386E-07
[0251] In the seventh Embodiment, the presentation of the aspheric
surface formula is similar to that in the first embodiment.
Besides, the definitions of parameters in following tables are
equal to those in the first embodiment, so the repetitious details
will not be given here.
[0252] The following contents may be deduced from Table 13 and
Table 14.
TABLE-US-00025 Seventh embodiment (Primary reference wavelength:
555 nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.522 2.278 1.705 0.197 1.325
0.746 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 1.148
1.036 1.004 0.657 0.927 1.050 ETL EBL EIN EIR PIR EIN/ETL 13.984
5.250 8.733 0.720 0.700 0.625 SETP/EIN EIR/PIR SETP STP SETP/STP BL
0.776 1.029 6.774 6.792 0.997 5.230 ED12 ED23 ED34 ED45 ED56 EBL/BL
1.312 0.254 0.135 0.224 0.034 1.0038 SED SIN SED/SIN ED12/ED23
ED23/ED34 ED34/ED45 1.959 1.978 0.991 5.160 1.888 0.602 ED12/IN12
ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 ED45/ED56 0.972 0.743 0.950
2.380 0.680 6.589 | f/f1 | | f/f2 | | f/f3 | | f/f4 | | f/f5 | |
f/f6 | 0.66443 0.12246 1.27119 1.31908 0.67325 0.30858 .SIGMA. PPR
.SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR | IN12/f IN56/f TP4/(IN34 +
TP4 + IN45) 2.06690 2.29208 0.90176 0.38320 0.01419 0.55982 | f1/f2
| | f2/f3 | (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 0.18431 10.38025
0.82075 0.53199 HOS InTL HOS/HOI InS/HOS ODT % TDT % 14.00000
8.76973 3.50000 0.71115 -34.368 21.4323 HVT51 HVT52 HVT61 HVT62
HVT62/HOI HVT62/HOS 0 0 0.00000 2.37421 0.59355 0.16959 TP2/TP3
TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 | InRS62 |/TP6 1.29484 5.66050
0.23193 -0.17856 0.32643 0.25131 MTFE0 MTFE3 MTFE7 MTFQ0 MTFQ3
MTFQ7 0.87 0.84 0.83 0.72 0.62 0.63 MTFI0 MTFI3 MTFI7 0.82 0.78
0.75
[0253] The following contents may be deduced from Table 13 and
Table 14.
TABLE-US-00026 Related inflection point values of seventh
Embodiment (Primary reference wavelength: 555 nm) HIF421 2.0904
HIF421/HOI 0.5226 SGI421 0.3067 | SGI421 |/(| SGI421 | + TP4)
0.5055 HIF521 1.8250 HIF521/HOI 0.4562 SGI521 -0.4122 | SGI521 |/(|
SGI521 | + TP5) 0.2238 HIF621 1.6787 HIF621/HOI 0.4197 SGI621
-0.1434 | SGI621 |/(| SGI621 | + TP6) 0.1680
The Eight Embodiment
Embodiment 8
[0254] Please refer to FIG. 8A, FIG. 8B, FIGS. 8C, and 81D. FIG. 8A
is a schematic view of the optical image capturing system according
to the eighth Embodiment of the present application, FIG. 8B is
longitudinal spherical aberration curves, astigmatic field curves,
and an optical distortion curve of the optical image capturing
system in the order from left to right according to the eighth
Embodiment of the present application, FIG. 8C is a characteristic
diagram of modulation transfer of a visible light according to the
eighth embodiment of the present application and FIG. 8D is a
characteristic diagram of modulation transfer of infrared rays
according to the eighth embodiment of the present application. As
shown in FIG. 8A, in order from an object side to an image side,
the optical image capturing system includes an aperture stop 800, a
first lens element 810, a second lens element 820, a third lens
element 830, a fourth lens element 840, a fifth lens element 850, a
sixth lens element 860, an IR-bandstop filter 880, an image plane
890, and an image sensing device 892.
[0255] The first lens element 810 has positive refractive power and
it is made of plastic material. The first lens element 810 has a
convex object-side surface 812 and a concave image-side surface
814, both of the object-side surface 812 and the image-side surface
814 are aspheric, and the image-side surface 814 has an inflection
point.
[0256] The second lens element 820 has negative refractive power
and it is made of plastic material. The second lens element 820 has
a concave object-side surface 822 and a concave image-side surface
824, and both of the object-side surface 822 and the image-side
surface 824 are aspheric. The image-side surface 824 has two
inflection points.
[0257] The third lens element 830 has negative refractive power and
it is made of plastic material. The third lens element 830 has a
convex object-side surface 832 and a concave image-side surface
834, and both of the object-side surface 832 and the image-side
surface 834 are aspheric. The object-side surface 832 and the
image-side surface 834 both have an inflection point.
[0258] The fourth lens element 840 has positive refractive power
and it is made of plastic material. The fourth lens element 840 has
a concave object-side surface 842 and a convex image-side surface
844, and both of the object-side surface 842 and the image-side
surface 844 are aspheric. The object-side surface 842 has three
inflection points.
[0259] The fifth lens element 850 has positive refractive power and
it is made of plastic material. The fifth lens element 850 has a
convex object-side surface 852 and a convex image-side surface 854,
and both of the object-side surface 852 and the image-side surface
854 are aspheric. The object-side surface 852 has three inflection
points and the image-side surface 854 has an inflection point.
[0260] The sixth lens element 860 has negative refractive power and
it is made of plastic material. The sixth lens element 860 has a
concave object-side surface 862 and a concave image-side surface
864. The object-side surface 862 has two inflection points and the
image-side surface 864 has an inflection point. Hereby, the back
focal length is reduced to miniaturize the lens element
effectively. In addition, the angle of incident with incoming light
from an off-axis view field can be suppressed effectively and the
aberration in the off-axis view field can be corrected further.
[0261] The IR-bandstop filter 880 is made of glass material without
affecting the focal length of the optical image capturing system
and it is disposed between the sixth lens element 860 and the image
plane 890.
[0262] In the optical image capturing system of the eighth
Embodiment, a sum of focal lengths of all lens elements with
positive refractive power is .SIGMA.PP. The following relations are
satisfied: .SIGMA.PP=12.785 mm and f5/.SIGMA.PP=0.10. Hereby, it is
favorable for allocating the positive refractive power of a single
lens element to other positive lens elements and the significant
aberrations generated in the process of moving the incident light
can be suppressed.
[0263] In the optical image capturing system of the eighth
Embodiment, a sum of focal lengths of all lens elements with
negative refractive power is .SIGMA.NP. The following relations are
satisfied: .SIGMA.NP=-112.117 mm and f6/.SIGMA.NP=0.009. Hereby, it
is favorable for allocating the negative refractive power of a
single lens element to other negative lens elements.
[0264] Please refer to the following Table 15 and Table 16.
The detailed data of the optical image capturing system of the
eighth Embodiment is as shown in Table 15.
TABLE-US-00027 TABLE 15 Data of the optical image capturing system
f = 3.213 mm; f/HEP = 2.4; HAF = 50.015 deg Focal Surface#
Curvature Radius Thickness Material Index Abbe # length 0 Object
Plano At infinity 1 Shading Plano 0.000 sheet 2 Ape. Stop Plano
-0.108 3 Lens 1 2.117380565 0.267 Plastic 1.565 58.00 6.003 4
5.351202213 0.632 5 Lens 2 -70.37596785 0.230 Plastic 1.517 21.40
-11.326 6 8.30936549 0.050 7 Lens 3 7.333171865 0.705 Plastic 1.565
58.00 -99.749 8 6.265499794 0.180 9 Lens 4 -71.32533363 0.832
Plastic 1.565 58.00 5.508 10 -3.003657909 0.050 11 Lens 5
3.397431079 0.688 Plastic 1.583 30.20 1.274 12 -0.886432266 0.050
13 Lens 6 -3.715425702 0.342 Plastic 1.650 21.40 -1.042 14
0.867623637 0.700 15 IR-bandstop Plano 0.200 1.517 64.13 filter 16
Plano 0.407 17 Image plane Plano Reference wavelength (d-line) =
555 nm; shield position: clear aperture (CA) of the first plano =
0.640 mm
As for the parameters of the aspheric surfaces of the eighth
Embodiment, reference is made to Table 16.
TABLE-US-00028 TABLE 16 Aspheric Coefficients Surface # 3 4 5 6 7 8
9 k -1.486403E+00 2.003790E+01 -4.783682E+01 -2.902431E+01
-5.000000E+01 -5.000000E+01 -5.000000E+01 A4 2.043654E-02
-2.642626E-02 -6.237485E-02 -4.896336E-02 -7.363667E-02
-5.443257E-02 3.105497E-02 A6 -2.231403E-04 -4.147746E-02
-8.137705E-02 -1.981368E-02 1.494245E-02 1.263891E-04 -1.532514E-02
A8 -1.387235E-02 2.901026E-02 4.589961E-02 3.312952E-03
6.252296E-03 -9.655324E-03 -6.443603E-04 A10 -3.431740E-02
-9.512960E-02 -5.485574E-02 5.634445E-03 -2.226544E-03 1.318692E-03
4.321089E-04 A12 0.000000E+00 0.000000E+00 0.000000E+00
0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 A14
0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00
0.000000E+00 0.000000E+00 Surface # 10 11 12 13 14 k 8.520005E+01
-5.000000E+01 -4.524978E+00 -5.000000E+01 -4.286435E+00 A4
-6.786287E-03 -9.520247E-02 -4.666187E-02 5.856863E-03
-2.635938E-02 A6 6.693976E-03 -5.507560E-05 3.849227E-03
2.442214E-03 3.694093E-03 A8 8.220809E-04 1.932773E-03 1.041053E-03
-2.201034E-03 -1.355873E-04 A10 -2.798394E-04 3.346274E-04
4.713339E-06 -1.065215E-04 -5.321575E-05 A12 0.000000E+00
1.125736E-05 -2.834871E-06 1.227641E-04 6.838440E-06 A14
0.000000E+00 -1.671951E-05 -2.293810E-06 -1.181115E-05
-2.530792E-07
[0265] In the eighth Embodiment, the presentation of the aspheric
surface formula is similar to that in the first embodiment.
Besides, the definitions of parameters in following tables are
equal to those in the first embodiment, so the repetitious details
will not be given here.
[0266] The following contents may be deduced from Table 15 and
Table 16.
TABLE-US-00029 Eighth embodiment (Primary reference wavelength: 555
nm) ETP1 ETP2 ETP3 ETP4 ETP5 ETP6 0.203 0.263 0.710 0.760 0.479
0.556 ETP1/TP1 ETP2/TP2 ETP3/TP3 ETP4/TP4 ETP5/TP5 ETP6/TP6 0.759
1.142 1.008 0.914 0.696 1.628 ETL EBL EIN EIR PIR EIN/ETL 5.234
1.134 4.100 0.527 0.700 0.783 SETP/EIN EIR/PIR SETP STP SETP/STP BL
0.725 0.753 2.971 3.064 0.970 1.304 ED12 ED23 ED34 ED45 ED56 EBL/BL
0.580 0.050 0.161 0.150 0.188 0.8696 SED SIN SED/SIN 1.129 0.962
1.173 ED12/IN12 ED23/IN23 ED34/IN34 ED45/IN45 ED56/IN56 0.917 1.005
0.896 2.997 3.756 | f/f1 | | f/f2 | | f/f3 | | f/f4 | | f/f5 | |
f/f6 | 0.53529 0.28371 0.03221 0.58335 2.52139 3.08263 .SIGMA. PPR
.SIGMA. NPR .SIGMA. PPR/| .SIGMA. NPR | IN12/f IN56/f TP4/(IN34 +
TP4 + IN45) 6.72266 0.84594 7.94700 0.19680 0.01556 0.78362 | f1/f2
| | f2/f3 | (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 0.53001 0.11354
3.90947 0.56888 HOS InTL HOS/HOI InS/HOS ODT % TDT % 5.33002
4.02576 1.36178 0.97981 1.92371 1.09084 HVT51 HVT52 HVT61 HVT62
HVT62/HOI HVT62/HOS 0.67483 0 0.00000 2.23965 0.57222 0.42020
TP2/TP3 TP3/TP4 InRS61 InRS62 | InRS61 |/TP6 | InRS62 |/TP6 0.32631
0.84713 -0.74088 -0.06065 2.16896 0.17755 MTFE0 MTFE3 MTFE7 MTFQ0
MTFQ3 MTFQ7 0.9 0.85 0.8 0.77 0.63 0.51 MTFI0 MTFI3 MTFI7 0.45 0.03
0.22
[0267] The following contents may be deduced from Table 15 and
Table 16.
TABLE-US-00030 Related inflection point values of eighth Embodiment
(Primary reference wavelength: 555 nm) HIF121 0.57452 HIF121/HOI
0.14679 SGI121 0.02858 | SGI121 |/(| SGI121 | + TP1) 0.09675 HIF221
0.40206 HIF221/HOI 0.10272 SGI221 0.00821 | SGI221 |/(| SGI221 | +
TP2) 0.03448 HIF222 1.11769 HIF222/HOI 0.28556 SGI222 -0.02234 |
SGI222 |/(| SGI222 | + TP2) 0.08853 HIF311 0.37391 HIF311/HOI
0.09553 SGI311 0.00785 | SGI311 |/(| SGI311 | + TP3) 0.01102 HIF321
0.42061 HIF321/HOI 0.10746 SGI321 0.01170 | SGI321 |/(| SGI321 | +
TP3) 0.01633 HIF411 0.19878 HIF411/HOI 0.05079 SGI411 -0.00023 |
SGI411 |/(| SGI411 | + TP4) 0.00028 HIF412 0.87349 HIF412/HOI
0.22317 SGI412 0.00583 | SGI412 |/(| SGI412 | + TP4) 0.00695 HIF413
1.87638 HIF413/HOI 0.47940 SGI413 -0.17360 | SGI413 |/(| SGI413 | +
TP4) 0.17263 HIF511 0.36373 HIF511/HOI 0.09293 SGI511 0.015644 |
SGI511 |/(| SGI511 | + TP5) 0.02222 HIF512 1.7159 HIF512/HOI
0.43840 SGI512 -0.446747 | SGI512 |/(| SGI512 | + TP5) 0.39358
HIF513 1.93653 HIF513/HOI 0.49477 SGI513 -0.638544 | SGI513 |/(|
SGI513 | + TP5) 0.48124 HIF521 1.54767 HIF521/HOI 0.39542 SGI521
-0.792114 | SGI521 |/(| SGI521 | + TP5) 0.53505 HIF611 0.82168
HIF611/HOI 0.20993 SGI611 -0.060958 | SGI611 |/(| SGI611 | + TP6)
0.15143 HIF612 0.98146 HIF612/HOI 0.25076 SGI612 -0.07785 | SGI612
|/(| SGI612 | + TP6) 0.18561 HIF621 0.79476 HIF621/HOI 0.20306
SGI621 0.238143 | SGI621 |/(| SGI621 | + TP6) 0.41079
[0268] The above-mentioned descriptions represent merely the
exemplary embodiment of the present disclosure, without any
intention to limit the scope of the present disclosure thereto.
Various equivalent changes, alternations or modifications based on
the claims of present disclosure are all consequently viewed as
being embraced by the scope of the present disclosure.
* * * * *