U.S. patent application number 14/043122 was filed with the patent office on 2016-05-12 for optical imaging lens assembly.
This patent application is currently assigned to Largan Precision Co.. The applicant listed for this patent is Largan Precision Co.. Invention is credited to Hsin-Hsuan Huang.
Application Number | 20160131877 14/043122 |
Document ID | / |
Family ID | 46118064 |
Filed Date | 2016-05-12 |
United States Patent
Application |
20160131877 |
Kind Code |
A9 |
Huang; Hsin-Hsuan |
May 12, 2016 |
Optical Imaging Lens Assembly
Abstract
An optical imaging lens assembly, sequentially arranged from an
object side to an image side along an optical axis, comprising: the
first lens element with positive refractive power, the second lens
element with negative refractive power having a convex object-side
surface and a concave image-side surface, the third lens element
with positive refractive power, the fourth lens element with
negative refractive power having a concave object-side surface and
a convex image-side surface, the fifth lens element with refractive
power having a concave image-side surface, and both object-side
surface and image-side surface being aspheric, wherein a stop and
an image sensor disposed on an image plane are also provided. By
such arrangements, the image pickup optical system satisfies
conditions related to shorten the total length and to reduce the
sensitivity for use in compact cameras and mobile phones with
camera functionalities.
Inventors: |
Huang; Hsin-Hsuan; (Taichung
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Largan Precision Co. |
Taichung City |
|
TW |
|
|
Assignee: |
Largan Precision Co.
Taichung City
TW
|
Prior
Publication: |
|
Document Identifier |
Publication Date |
|
US 20140036378 A1 |
February 6, 2014 |
|
|
Family ID: |
46118064 |
Appl. No.: |
14/043122 |
Filed: |
October 1, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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13349908 |
Jan 13, 2012 |
8576498 |
|
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14043122 |
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Current U.S.
Class: |
359/714 |
Current CPC
Class: |
G02B 13/0045 20130101;
G02B 9/60 20130101; H04N 5/2254 20130101; G02B 13/18 20130101 |
International
Class: |
G02B 13/18 20060101
G02B013/18 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 28, 2011 |
TW |
100122689 |
Claims
1. An optical imaging lens assembly, sequentially arranged from an
object side to an image side, comprising: a first lens element with
positive refractive power; a second lens element with negative
refractive power, having a convex object-side surface and a concave
image-side surface; a third lens element with positive refractive
power; a fourth lens element with negative refractive power, having
a concave object-side surface and a convex image-side surface; and
a fifth lens element with refractive power, having a concave
image-side surface, and both object-side surface and image-side
surface being aspheric, at least one of the object-side surface and
the image-side surface having at least one inflection point;
wherein, v.sub.3 is an Abbe number of the third lens element,
v.sub.4 is an Abbe number of the fourth lens element, f is a focal
length of the optical imaging lens assembly, f.sub.3 is a focal
length of the third lens element, and the following relations are
satisfied: 25<v.sub.3-v.sub.4<45; and
0.7<f/f.sub.3<2.5.
2. The optical imaging lens assembly of claim 1, wherein the third
lens element has a convex image-side surface.
3. The optical imaging lens assembly of claim 2, wherein R.sub.3 is
a curvature radius of the object-side surface of the second lens
element, R.sub.4 is a curvature radius of the image-side surface of
the second lens element, and the following relation is satisfied:
0.1<R.sub.4/R.sub.3<0.8.
4. The optical imaging lens assembly of claim 3, wherein the third
lens element has a concave object-side surface
5. The optical imaging lens assembly of claim 3, wherein R.sub.10
is a curvature radius of the image-side surface of the fifth lens
element, CT.sub.5 is a central thickness of the fifth lens element,
and the following relation is satisfied:
1.3<R.sub.10/CT.sub.5<3.0.
6. The optical imaging lens assembly of claim 2, wherein R.sub.3 is
a curvature radius of the object-side surface of the second lens
element, R.sub.4 is a curvature radius of the image-side surface of
the second lens element, and the following relation is satisfied:
0.25<R.sub.4/R.sub.3<0.55.
7. The optical imaging lens assembly of claim 1, wherein f is the
focal length of the optical imaging lens assembly, f.sub.3 is the
focal length of the third lens element, and the following relations
are satisfied: 0.82<f/f.sub.3<1.7.
8. The optical imaging lens assembly of claim 1, wherein the first
lens element has a convex object-side surface.
9. The optical imaging lens assembly of claim 8, further comprising
an image sensor at an image plane, wherein TTL is an axial distance
between the object-side surface of the first lens element and the
image plane, and ImgH is a maximum image height of the optical
imaging lens assembly, and the following relation is satisfied:
TTL/ImgH<2.2.
10. The optical imaging lens assembly of claim 8, wherein v.sub.1
is an Abbe number of the first lens element, v.sub.2 is an Abbe
number of the second lens element, and the following relation is
satisfied: 25<v.sub.1-v.sub.2<45.
11. The optical imaging lens assembly of claim 8, wherein R.sub.1
is a curvature radius of the object-side surface of the first lens
element, R.sub.2 is a curvature radius of an image-side surface of
the first lens element, and the following relation is satisfied:
-1.5<(R.sub.1+R.sub.2)/(R.sub.1-R.sub.2)<-0.3.
12. The optical imaging lens assembly of claim 11, wherein R.sub.6
is a curvature radius of an image-side surface of the third lens
element, CT.sub.3 is a central thickness of the third lens element,
and the following relation is satisfied:
-4.5<R.sub.6/CT.sub.3<-0.5.
13. The optical imaging lens assembly of claim 11, wherein the
fifth lens element has a convex object-side surface.
14. An optical imaging lens assembly, sequentially arranged from an
object side to an image side, comprising: a first lens element with
positive refractive power; a second lens element with negative
refractive power, having a convex object-side surface and a concave
image-side surface; a third lens element with refractive power; a
fourth lens element with negative refractive power, having a
concave object-side surface and a convex image-side surface; and a
fifth lens element with refractive power, having a concave
image-side surface, and both object-side surface and image-side
surface being aspheric, at least one of the object-side surface and
the image-side surface having at least one inflection point;
wherein, v.sub.3 is an Abbe number of the third lens element,
v.sub.4 is an Abbe number of the fourth lens element, R.sub.10 is a
curvature radius of the image-side surface of the fifth lens
element, CT.sub.5 is a central thickness of the fifth lens element,
and the following relations are satisfied:
25<v.sub.3-v.sub.4<45; and
1.3<R.sub.10/CT.sub.5.ltoreq.2.45.
15. The optical imaging lens assembly of claim 14, wherein the
third lens element has a convex image-side surface.
16. The optical imaging lens assembly of claim 15, wherein f is a
focal length of the optical imaging lens assembly, f.sub.3 is a
focal length of the third lens element, and the following relation
is satisfied: 0.7<f/f.sub.3<2.5.
17. The optical imaging lens assembly of claim 15, wherein R.sub.3
is a curvature radius of the object-side surface of the second lens
element, R.sub.4 is a curvature radius of the image-side surface of
the second lens element, and the following relation is satisfied:
0.1<R.sub.4/R.sub.3<0.8.
18. The optical imaging lens assembly of claim 15, wherein R.sub.1
is a curvature radius of the object-side surface of the first lens
element, R.sub.2 is a curvature radius of the image-side surface of
the first lens element, and the following relation is satisfied:
-1.5<(R.sub.1+R.sub.2)/(R.sub.1-R.sub.2)<-0.3.
19. The optical imaging lens assembly of claim 18, further
comprising an image sensor at an image plane, wherein TTL is an
axial distance between the object-side surface of the first lens
element and the image plane, and ImgH is a maximum image height of
the optical imaging lens assembly, and the following relation is
satisfied: TTL/ImgH<2.2.
20. The optical imaging lens assembly of claim 18, wherein R.sub.6
is a curvature radius of an image-side surface of the third lens
element, CT.sub.3 is a central thickness of the third lens element,
and the following relation is satisfied:
-4.5<R.sub.6/CT.sub.3<-0.5.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of application Ser. No.
13/349,908, filed Jan. 13, 2012, which claims the priority of
Taiwan Patent Application No. 100122689, filed on Jun. 28, 2011, in
the Taiwan Intellectual Property Office, the disclosure of which is
incorporated herein in its entirety by reference.
BACKGROUND
[0002] 1. Technical Field
[0003] The present disclosure relates to an optical imaging lens
assembly, and more particularly to the optical imaging lens
assembly to shorten total length and lower cost for applying to
electronic products.
[0004] 2. Description of the Related Art
[0005] In compact electronic products such as digital still cameras
or mobile phone cameras, an optical imaging lens assembly is
generally installed for capturing images of an object, and the
optical imaging lens assembly tends to be developed with a compact
design and a low cost, while meeting the user requirements of good
aberration correction ability, high resolution, and high image
quality.
[0006] In general, a conventional optical imaging lens assembly of
a compact electronic product comes with different designs,
including the two-lens, three-lens, four-lens, and five-or-more
lens designs. However, if the imaging quality is taken into
consideration, the optical imaging lens assembly with the four-lens
or five-lens designs has advantages on image aberration and
modulation transfer function (MTF) performance, wherein the
five-lens design having a higher resolution than the four-lens
designs thus being applicable for electronic products requiring the
high quality and high pixels.
[0007] In various compact designs of the five-lens optical imaging
lens assembly having a fixed focal length, prior arts adopt
different combinations of positive and negative refractive powers
and a group of stacked lens elements as disclosed in publications
and U.S. Pat. Nos. US2004/0196571 and US2003/0117722, or the first
lens element with negative refractive power for reducing the total
length of the optical system as disclosed in U.S. Pat. No.
7,480,105.
[0008] In products such as compact digital cameras, web cameras,
and mobile phone cameras, the optical imaging lens assembly
requires a compact design, a short focal length, and a good
aberration correction. In various different five-lens designs for
an optical imaging lens assembly with a fixed focal length, it is
relatively difficult for a combination of the fourth lens element
and the fifth lens element with different refractive powers, and
the fourth lens element or the fifth lens element having an
inflection point to achieve a good aberration correction and meet
the design requirement for the total length of the optical imaging
lens assembly. As disclosed in U.S. Pat. No. 7,710,665, a good
aberration correction can be achieved, but the total length of the
optical imaging lens assembly still fails to meet the requirements
to satisfy the specifications for compact electronic device. As
disclosed in publications and U.S. Pat. No. 7,826,151,
US2010/0254029, US2010/0253829, the fourth lens element and the
fifth lens element having an inflection point respectively are used
for designing a shorter total length. As disclosed in publications
and U.S. Pat. Nos. 7,826,151, 7,502,181, and US2010/0134904, a
combination of the first lens element with positive refractive
power, the second lens element with negative refractive power and
the third lens element with positive refractive power are used to
achieve a higher image capturing ability. Among these prior arts,
the fourth lens element or fifth lens element having an inflection
point can correct aberration or distortion, but a longer distance
between the third lens element and the fourth lens element is
required, which is unfavorable to the design of a shorter total
length.
[0009] Therefore, the present disclosure provides a more practical
design to shorten the optical imaging lens assembly, while using a
combination of refractive powers and a combination of convex and
concave surfaces of five lens elements to reduce the total length
of the optical imaging lens assembly and improve the image quality,
so that the optical imaging lens assembly can be applied to compact
electronic products.
SUMMARY
[0010] It is a primary objective of the present disclosure to
provide an optical imaging lens assembly, sequentially arranged
from an object side to an image side along an optical axis,
comprising: the first lens element, the second lens element, the
third lens element, the fourth lens element, and the fifth lens
element, wherein the first lens element with positive refractive
power has a convex object-side surface; the second lens element
with negative refractive power has a convex object-side surface and
a concave image-side surface; the third lens element with positive
refractive power has a convex image-side surface; the fourth lens
element with refractive power has both object-side and image-side
surfaces being aspheric; the fifth lens element with refractive
power has a concave image-side surface, both object-side surface
and image-side surface being aspheric, and at least one of the
optical surface having at least one inflection point; and the
following relations are satisfied:
0.7<f/f.sub.3<2.5 (1)
0.1<T.sub.23/T.sub.34<2.0 (2)
-0.8<f/R.sub.9<5.0 (3)
-4.5<R.sub.6/CT.sub.3<-0.5 (4)
[0011] Wherein, f is a focal length of the optical imaging lens
assembly, f.sub.3 is a focal length of the third lens element,
T.sub.23 is an axial distance between the second lens element and
the third lens element, T.sub.34 is an axial distance between the
third lens element and the fourth lens element, R.sub.6 is a
curvature radius of the image-side surface of the third lens
element, R.sub.9 is a curvature radius of the object-side surface
of the fifth lens element, and CT.sub.3 is a central thickness of
the third lens element.
[0012] On the other hand, the present disclosure provides an
optical imaging lens assembly as described above, wherein the third
lens element has a concave object-side surface; the fourth lens
element and the fifth lens element are made of plastic; the fifth
lens element has a convex object-side surface and at least one of
the object-side surface and an image-side surface has at least one
inflection point, and the optical imaging lens assembly satisfies
one or more of the following relations in addition to the relations
(1), (2), (3) and (4):
-1.5<(R.sub.1+R.sub.2)/(R.sub.1-R.sub.2)<-0.3 (5)
0.82<f/f.sub.3<1.7 (7)
-1.1<(R.sub.1+R.sub.2)/(R.sub.1-R.sub.2)<-0.6 (13)
0.25<R.sub.4/R.sub.3<0.55 (14)
1.3<R.sub.10/CT.sub.5<3.0 (15)
-2.5<R.sub.6/CT.sub.3<-1.3 (11)
[0013] Wherein, R.sub.1 is a curvature radius of the object-side
surface of the first lens element, R.sub.2 is a curvature radius of
the image-side surface of the first lens element, R.sub.3 is the
curvature radius of the object-side surface of the second lens
element, R.sub.4 is a curvature radius of the image-side surface of
the second lens element, R.sub.6 is the curvature radius of the
image-side surface of the third lens element, R.sub.10 is a
curvature radius of the image-side surface of the fifth lens
element, f is the focal length of the optical imaging lens
assembly, f.sub.3 is the focal length of the third lens element,
CT.sub.3 is the central thickness of the third lens element, and
CT.sub.5 is a central thickness of the fifth lens element.
[0014] Moreover, the present disclosure provides an optical imaging
lens assembly, sequentially arranged from an object side to an
image side along an optical axis, comprising: the first lens
element, the second lens element, the third lens element, the
fourth lens element, and the fifth lens element, and further
comprises a stop. Wherein, the first lens element with positive
refractive power has a convex object-side surface and a convex
image-side surface; the second lens element with negative
refractive power has a convex object-side surface and a concave
image-side surface; the third lens element with positive refractive
power has a concave object-side surface and a convex image-side
surface; the fourth lens element with refractive power has both
object-side surface and image-side surface being aspheric and made
of plastic; the fifth lens element with refractive power has a
convex object-side surface and a concave image-side surface, both
being aspheric, at least one of the object-side surface and the
image-side surface has at least one inflection point, and made of
plastic; and the optical imaging lens assembly satisfies one or
more of the following relations in addition to the relations (1),
(2), (3) and (4):
0.1<R.sub.4/R.sub.3<0.8 (6)
0.75<S.sub.d/T.sub.d<0.90 (8)
-0.3<f/R.sub.9<3.5 (9)
25<v.sub.1-v.sub.2<45 (10)
-2.5<R.sub.6/CT.sub.3<-1.3 (11)
25<v.sub.3-v.sub.4<45 (12)
[0015] Wherein, R.sub.3 is the curvature radius of the object-side
surface of the second lens element, R.sub.4 is the curvature radius
of the image-side surface of the second lens element, R.sub.6 is
the curvature radius of the image-side surface of the third lens
element, R.sub.9 is the curvature radius of the object-side surface
of the fifth lens element, v.sub.1 is an Abbe number of the first
lens element, v.sub.2 is an Abbe number of the second lens element,
v.sub.3 is an Abbe number of the third lens element, v.sub.4 is the
Abbe number of the fourth lens element, f is the focal length of
the optical imaging lens assembly, CT.sub.3 is the central
thickness of the third lens element, T.sub.d is an axial distance
between the object-side surface of the first lens element and the
image-side surface of the fifth lens element, and S.sub.d is an
axial distance between the stop and the image-side surface of the
fifth lens elements.
[0016] Moreover, the present disclosure provides an optical imaging
lens assembly, sequentially arranged from an object side to an
image side along an optical axis, comprising: the first lens
element, the second lens element, the third lens element, the
fourth lens element, and the fifth lens element, and further
comprises an image sensor at an image plane for imaging an
photographed object. Wherein, the first lens element with positive
refractive power has a convex object-side surface; the second lens
element with negative refractive power has a convex object-side
surface and a concave image-side surface; the third lens element
with positive refractive power has a convex image-side surface; the
fourth lens element with refractive power has both object-side
surface and image-side surface being aspheric; the fifth lens
element with refractive power has a concave image-side surface and
both object-side surface and image-side surface being aspheric; and
the optical imaging lens assembly satisfies the following relation
in addition to the relations (1), (2), (3) and (4):
TTL/ImgH<2.2 (16)
[0017] Wherein, TTL is an axial distance between the object-side
surface of the first lens element and the image plane, and ImgH is
a maximum image height of the optical imaging lens assembly.
[0018] Another objective of the present disclosure is to provide an
optical imaging lens assembly, sequentially arranged from an object
side to an image side along an optical axis, comprising: the first
lens element, the second lens element, the third lens element, the
fourth lens element, and the fifth lens element. Wherein, the first
lens element with positive refractive power has a convex
object-side surface; the second lens element with negative
refractive power has a convex object-side surface and a concave
image-side surface; the third lens element with positive refractive
power has a convex image-side surface; the fourth lens element with
refractive power has a concave object-side surface, both
object-side surface and image-side surface are aspheric, and made
of plastic; the fifth lens element with refractive power has a
concave image-side surface, both object-side surface and image-side
are aspheric surface, at least one of the object-side surface and
image-side surface has at least one inflection point, and made of
plastic; and the optical imaging lens assembly satisfies the
following relations:
0.82<f/f.sub.3<1.7 (7)
-0.8<f/R.sub.9<6.0 (17)
-4.5<R.sub.6/CT.sub.3<-0.5 (4)
[0019] Wherein, f is a focal length of the optical imaging lens
assembly, f.sub.3 is a focal length of the third lens element,
R.sub.6 is a curvature radius of the image-side surface of the
third lens element, R.sub.9 is a curvature radius of the
object-side surface of the fifth lens element, and CT.sub.3 is a
central thickness of the third lens element. On the other hand, the
present disclosure provides an optical imaging lens assembly as
described above, and the optical imaging lens assembly satisfies
one or more of the following relations in addition to the relations
(7), (17) and (4):
-2.5<R.sub.6/CT.sub.3<-1.3 (11)
0.25<R.sub.4/R.sub.3<0.55 (14)
[0020] Wherein, R.sub.3 is a curvature radius of the object-side
surface of the second lens element, R.sub.4 is a curvature radius
of the image-side surface of the second lens element, R.sub.6 is
the curvature radius of the image-side surface of the third lens
element, and CT.sub.3 is the central thickness of the third lens
element.
[0021] With the arrangement of the aforementioned first lens
element, second lens element, third lens element, fourth lens
element and fifth lens element with an appropriate interval apart
from one another, the present disclosure can provide a good
aberration correction and an advantageous modulation transfer
function (MTF) in a greater field of view.
[0022] In the optical imaging lens assembly of the present
disclosure comprised of the first lens element, second lens
element, third lens element, fourth lens element and fifth lens
element, the first lens element with positive refractive power
provides most of the refractive power required by the system, and
the second lens element with negative refractive power can correct
aberrations produced by the positive refractive power effectively
and correct the Petzval sum of the system to make the image surface
on the edge flatter, and the third lens element with positive
refractive power can reduce the sensitivity of the manufacturing
tolerance of the lenses. The combination of different refractive
powers of the fourth lens element and the fifth lens element can be
adjusted to provide the necessary refractive power and the
aberration produced by the previous three lens elements, and the
modulation transfer function (MTF) can be improved to higher
resolution of the optical imaging lens assembly, so that the
overall aberration and distortion of the optical imaging lens
assembly can meet the high resolution requirement.
[0023] In the optical imaging lens assembly of the present
disclosure, the arrangement of the stop produces a longer distance
from the exit pupil of the optical imaging lens assembly to the
image plane, so that the light of an image can be projected
directly onto the image sensor to avoid dark corners or achieve the
telecentric effect on the image side. In general, the telecentric
effect can improve the brightness of the image plane and enhance
the speed of receiving images by the CCD or CMOS image sensor.
[0024] If the fifth lens element has an inflection point, the
inflection point can be used for guiding light of an image with an
angle out from the edges of the fifth lens element, such that the
light of an image at the off-axis view angle is guided and received
by the image sensor. In addition, the fifth lens element having a
convex object-side surface and a concave image-side surface can
correct the astigmatism of the optical system effectively. If the
fifth lens element has both concave object-side surface and
image-side surface, the principal point of the optical system can
be maintained at a position far from the image plane to facilitate
reducing the total length of optical imaging lens assembly. The
fourth lens element and the fifth lens element are made of plastic
to facilitate the manufacture with lower costs.
BRIEF DESCRIPTION OF THE DRAWINGS
[0025] FIG. 1A is a schematic view of an optical imaging lens
assembly in accordance with the first preferred embodiment of the
present disclosure;
[0026] FIG. 1B is a schematic view of a series of aberration curves
of the first preferred embodiment of the present disclosure;
[0027] FIG. 2A is a schematic view of an optical imaging lens
assembly in accordance with the second preferred embodiment of the
present disclosure;
[0028] FIG. 2B is a schematic view of a series of aberration curves
of the second preferred embodiment of the present disclosure;
[0029] FIG. 3A is a schematic view of an optical imaging lens
assembly in accordance with the third preferred embodiment of the
present disclosure;
[0030] FIG. 3B is a schematic view of a series of aberration curves
of the third preferred embodiment of the present disclosure;
[0031] FIG. 4A is a schematic view of an optical imaging lens
assembly in accordance with the fourth preferred embodiment of the
present disclosure;
[0032] FIG. 4B is a schematic view of a series of aberration curves
of the fourth preferred embodiment of the present disclosure;
[0033] FIG. 5A is a schematic view of an optical imaging lens
assembly in accordance with the fifth preferred embodiment of the
present disclosure;
[0034] FIG. 5B is a schematic view of a series of aberration curves
of the fifth preferred embodiment of the present disclosure;
[0035] FIG. 6A is a schematic view of an optical imaging lens
assembly in accordance with the sixth preferred embodiment of the
present disclosure;
[0036] FIG. 6B is a schematic view of a series of aberration curves
of the sixth preferred embodiment of the present disclosure;
[0037] FIG. 7A is a schematic view of an optical imaging lens
assembly in accordance with the seventh preferred embodiment of the
present disclosure; and
[0038] FIG. 7B is a schematic view of a series of aberration curves
of the seventh preferred embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0039] With reference to FIG. 1A for an optical imaging lens
assembly of the present disclosure, the optical imaging lens
assembly, sequentially arranged from an object side to an image
side along an optical axis, comprises: the first lens element 110,
the second lens element 120, the third lens element 130, the fourth
lens element 140 and the fifth lens element 150, wherein the first
lens element 110 with positive refractive power has a convex
object-side surface 111; the second lens element 120 with negative
refractive power has a convex object-side surface 121 and a concave
image-side surface 122; the third lens element 130 with positive
refractive power has a convex image-side surface 132; the fourth
lens element 140 with refractive power has both object-side surface
141 and image-side surface 142 being aspheric; and the fifth lens
element 150 with refractive power has a concave image-side surface
152 and both object-side surface 151 and image-side surface 152
being aspheric. The optical imaging lens assembly further comprises
a stop, which here is an aperture stop 100 and an IR-filter 160,
wherein the aperture stop 100 is a middle aperture stop installed
between the first lens element 110 and the second lens element 120,
and the IR-filter 160 is installed between the fifth lens element
150 and the image plane 170 and generally made of panel glass
without affecting the focal length f of the optical imaging lens
assembly of the present disclosure. The optical imaging lens
assembly further comprises an image sensor 180 at the image plane
170 for imaging a photographed object. The aspheric surfaces of the
first lens element 110, second lens element 120, third lens element
130, fourth lens element 140, and fifth lens element 150 comply
with the aspherical surface formula as given in Equation (18).
X ( Y ) = ( Y 2 / R ) 1 + ( 1 - ( 1 + K ) ( Y / R ) 2 ) + i ( A i )
( Y i ) ( 18 ) ##EQU00001##
[0040] Wherein,
[0041] X is the relative height from a point on the aspherical
surface with a distance Y from the optical axis to a tangent plane
at the tip of the optical axis of the aspherical surface;
[0042] Y is the distance between a point on the curvature of the
aspherical surface and the optical axis;
[0043] R is the curvature radius;
[0044] K is the conic coefficient; and
[0045] A.sub.i is the i.sup.th level aspherical surface
coefficient.
[0046] In the optical imaging lens assembly of the present
disclosure, the first lens element 110, second lens element 120,
third lens element 130, fourth lens element 140 and fifth lens
element 150 can have spherical or aspheric surfaces. If aspheric
optical surfaces are adopted, then the curvature radius of the
optical surface can be used for changing the refractive power to
reduce or eliminate aberrations, so as to reduce the number of lens
elements used in the optical imaging lens assembly and reduce the
total length of the optical imaging lens assembly effectively. With
the arrangement of the first lens element 110, second lens element
120, third lens element 130, fourth lens element 140, and fifth
lens element 150, the optical imaging lens assembly satisfies the
relations (1), (2), (3) and (4).
[0047] If the relation (1) is satisfied, the refractive power can
be allocated by adjusting the focal length f of the optical imaging
lens assembly and the focal length f.sub.3 of the third lens
element 130, so that the refractive power of the third lens element
130 in the optical imaging lens assembly can be allocated
effectively to reduce the sensitivity for manufacturing tolerance
of the optical imaging lens assembly. In addition, the third lens
element 130 has a convex image-side surface 132, so that if the
ratio of the curvature radius R.sub.6 of the image-side surface 132
of the third lens element 130 to the central thickness CT.sub.3 of
the third lens element 130 is limited according to the relation
(4), the larger the curvature radius of the image-side surface 132,
the smaller is the positive refractive power of the third lens
element 130. Therefore, the refractive power of the third lens
element 130 can be adjusted appropriately to reduce the sensitivity
for manufacturing tolerance of the system. An appropriate thickness
of the third lens element 130 can assist shortening the total
length of the optical imaging lens assembly. If the ratio of the
axial distance T.sub.23 between the second lens element 120 and the
third lens element 130 to the axial distance T.sub.34 between the
third lens element 130 and the fourth lens element 140 is limited
according to the relation (2), the angle of refraction of the light
passing through the second lens element 120 and the air gap to
enter into the fourth lens element 140 falls within a specific
range, so as to increase the angle of refraction and reduce the
total length. If the relation (3) is satisfied, the focal length f
of the optical imaging lens assembly and the curvature radius
R.sub.9 of the object-side surface 151 of the fifth lens element
150 can be adjusted appropriately to assist correcting the
aberration of the optical imaging lens assembly.
[0048] In the optical imaging lens assembly of the present
disclosure, if the ratio of the curvature radius R.sub.1 of the
object-side surface 111 to the curvature radius R.sub.2 of the of
the image-side surface 112 of the first lens element 110 is limited
according to the relations (5) and (13), the surface shape of the
first lens element 110 can be limited to assist providing
appropriate refractive power for the system. Similarly, the main
negative refractive power is provided by the second lens element
120. If the ratio of the curvature radius R.sub.3 of the
object-side surface 121 to the curvature radius R.sub.4 of the
image-side surface 122 of second lens element 120 is limited
according to the relations (6) and (14), the negative refractive
power of the second lens element 120 can be adjusted appropriately
to assist correcting the aberration produced by the first lens
element 110.
[0049] If the relation (10) is satisfied, the difference between
the Abbe number v.sub.1 of the first lens element 110 and the Abbe
number v.sub.2 of the second lens element 120 falls within an
appropriate range, the chromatic aberration produced by the first
lens element 110 and the second lens element 120 can be corrected
effectively to improve the chromatic aberration correction ability
of the second lens element 120. Similarly, if the relation (12) is
satisfied, the chromatic aberration between the third lens element
130 and the fourth lens element 140 can be corrected effectively to
improve the chromatic aberration correction ability of the fourth
lens element 140.
[0050] If the relation (16) is satisfied, wherein ImgH is half of
the diagonal length of an effective photosensitive area of the
image sensor 180, the total length TTL of the optical imaging lens
assembly can be reduced effectively. Similarly, if the relation (8)
is satisfied, the distance between the first lens element 110 and
the fifth lens element 150 can be limited to reduce the length of
the optical imaging lens assembly. If the relation (15) is
satisfied, the curvature radius R.sub.10 and the central thickness
CT.sub.5 of the image-side surface 152 of the fifth lens element
150 can be limited appropriately. Such arrangement not only adjusts
the refractive power appropriately, but also facilitates shortening
the total length.
[0051] The optical imaging lens assembly of the present disclosure
is described by means of preferred embodiments with relevant
drawings as follows.
First Preferred Embodiment
[0052] With reference to FIGS. 1A and 1B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the first preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: a glass first lens element 110 with
positive refractive power having a convex object-side surface 111
and a convex image-side surface 112, and both being aspheric; a
stop, which here is an aperture stop 100; a second lens element 120
with negative refractive power having a convex object-side surface
121 and a concave image-side surface 122, both being aspheric, and
made of plastic; a third lens element 130 with positive refractive
power having a concave object-side surface 131 and a convex
image-side surface 132, both being aspheric, and made of plastic; a
fourth lens element 140 with positive refractive power having a
convex object-side surface 141 and a concave image-side surface
142, both being aspheric, and made of plastic; a fifth lens element
150 with negative refractive power having a convex object-side
surface 151 and a concave image-side surface 152, both being
aspheric and having at least one inflection point, and made of
plastic; an IR-filter 160 made of panel glass for adjusting a
wavelength section of the light of an image; and an image sensor
180 at an image plane 170.
TABLE-US-00001 TABLE 1 Optical data of this preferred embodiment f
= 4.16 mm, Fno = 3.30, HFOV = 30.1 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 1.713567 (ASP) 0.567 Glass 1.501 56.4 3.23 2
-25.930948 (ASP) 0.089 3 Ape. Stop Plano 0.000 4 Lens 2 3.729398
(ASP) 0.345 Plastic 1.634 23.8 -4.40 5 1.539135 (ASP) 0.249 6 Lens
3 -7.090384 (ASP) 0.947 Plastic 1.530 55.8 4.21 7 -1.775592 (ASP)
0.308 8 Lens 4 100.000000 (ASP) 0.300 Plastic 1.634 23.8 418.77 9
160.236834 (ASP) 0.576 10 Lens 5 10.289682 (ASP) 0.719 Plastic
1.535 56.3 -4.02 11 1.735935 (ASP) 0.405 12 IR-filter Plano 0.210
Glass 1.517 64.2 -- 13 Plano 0.380 14 Image Plano -- Note:
Reference wavelength is 587.6 nm. ASP stands for aspherical
surfaces.
[0053] The optical data of this preferred embodiment are listed in
Table 1, wherein the object-side surfaces and the image-side
surfaces of the first lens element 110 to the fifth lens element
150 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 2 as
follows:
TABLE-US-00002 TABLE 2 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 9.04069E-01 2.00000E+01
-6.76401E+00 1.40445E-01 1.40884E+01 A4 = 8.57356E-03 3.14879E-02
-1.33083E-01 -1.66380E-01 -7.29051E-02 A6 = 2.08151E-02 4.83939E-02
1.09647E-01 9.27633E-02 -2.22736E-01 A8 = -1.64952E-02 -2.79857E-02
-2.52001E-01 -9.45802E-02 6.33991E-01 A10 = 4.17866E-02
-1.61557E-01 9.79423E-02 -7.84081E-02 -1.60572E+00 A12 =
-1.53887E-02 1.78708E-01 6.82109E-02 2.17772E-01 1.09256E+00
Surface # 7 8 9 10 11 k = -1.34202E+00 -1.00000E+02 1.00000E+02
8.50521E-01 -7.15144E+00 A4 = -1.28004E-01 -3.10278E-02
-1.50569E-02 -2.72257E-01 -1.14728E-01 A6 = -4.62429E-02
-6.90559E-02 -3.78177E-02 6.26001E-02 3.84200E-02 A8 = 1.77378E-02
7.79599E-02 7.14367E-02 1.25585E-02 -9.14179E-03 A10 = 2.89116E-03
-2.02773E-02 -4.66000E-02 -9.07807E-03 7.12124E-04 A12 =
-3.02972E-02 -1.21080E-02 1.24130E-02 -3.42448E-03 5.76463E-05 A14
= 6.54156E-03 -6.52488E-04 6.53605E-06 -1.98624E-05 A16 =
1.64052E-04 1.43258E-06
[0054] With reference to Table 1 and FIG. 1B for an optical imaging
lens assembly of this preferred embodiment, the optical imaging
lens assembly has a focal length f=4.16 (mm), an f-number Fno=3.30,
and a half of maximum view angle HFOV=30.1.degree.. After the
optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 3 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00003 TABLE 3 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.6
R.sub.10/CT.sub.5 2.41 V.sub.3 - V.sub.4 32.0 f/R.sub.9 0.40
T.sub.23/T.sub.34 0.81 f/f.sub.3 0.99 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.88 S.sub.d/T.sub.d 0.84 R.sub.4/R.sub.3 0.41 TTL/ImgH
2.04 R.sub.6/CT.sub.3 -1.88
[0055] According to the optical data as shown in Table 1 and the
series of aberration curves as shown in FIG. 1B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Second Preferred Embodiment
[0056] With reference to FIGS. 2A and 2B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the second preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: a first lens element 210 with positive
refractive power having a convex object-side surface 211 and a
convex image-side surface 212, both being aspheric; a stop, which
here is an aperture stop 200, and made of plastic; a second lens
element 220 with negative refractive power having a convex
object-side surface 221 and a concave image-side surface 222, both
being aspheric, and made of plastic; a third lens element 230 with
positive refractive power having a concave object-side surface 231
and a convex image-side surface 232, both being aspheric, and made
of plastic; a fourth lens element 240 with negative refractive
power having a concave object-side surface 241 and a convex
image-side surface 242, both being aspheric, and made of plastic; a
fifth lens element 250 with negative refractive power having a
convex object-side surface 251 and a concave image-side surface
252, both being aspheric and having at least one inflection point,
and made of plastic; an IR-filter 260 made of panel glass for
adjusting a wavelength section of the light of an image; and an
image sensor 280 at an image plane 270.
TABLE-US-00004 TABLE 4 Optical data of this preferred embodiment f
= 3.82 mm, Fno = 2.70, HFOV = 30.6 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 1.932066 (ASP) 0.626 Plastic 1.530 55.8 3.31 2
-17.003581 (ASP) 0.085 3 Ape. Stop Plano -0.015 4 Lens 2 3.714753
(ASP) 0.421 Plastic 1.634 23.8 -4.61 5 1.563196 (ASP) 0.240 6 Lens
3 -11.121554 (ASP) 0.872 Plastic 1.544 55.9 3.05 7 -1.485010 (ASP)
0.424 8 Lens 4 -1.484687 (ASP) 0.521 Plastic 1.614 25.6 -12.22 9
-2.098129 (ASP) 0.209 10 Lens 5 2.467793 (ASP) 0.678 Plastic 1.535
56.3 -6.29 11 1.287251 (ASP) 0.405 12 IR-filter Plano 0.210 Glass
1.517 64.2 -- 13 Plano 0.381 14 Image Plano -- Note: Reference
wavelength is 587.6 nm. ASP stands for aspherical surfaces.
[0057] The optical data of this preferred embodiment are listed in
Table 4, wherein the object-side surfaces and the image-side
surfaces of the first lens element 210 to the fifth lens element
250 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 5 as
follows:
TABLE-US-00005 TABLE 5 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 8.79814E-01 1.51889E+01
-4.26992E+00 6.17090E-02 -8.63667E+00 A4 = 1.00962E-02 2.56148E-02
-1.26347E-01 -1.69485E-01 -8.04247E-02 A6 = 1.89016E-02 5.49516E-02
1.28281E-01 9.13251E-02 -2.48673E-01 A8 = -2.07038E-02 8.76055E-03
-2.10163E-01 -5.96734E-02 7.78747E-01 A10 = 4.04248E-02
-1.82610E-01 1.06085E-01 -8.38859E-02 -1.75607E+00 A12 =
-1.66532E-02 1.36627E-01 -7.78112E-02 1.65806E-01 1.31398E+00
Surface # 7 8 9 10 11 k = -2.50005E+00 -7.94553E+00 -9.46981E+00
-1.53814E+01 -5.43399E+00 A4 = -1.11832E-01 -2.68504E-02
-1.83884E-02 -2.18667E-01 -1.09140E-01 A6 = -6.83402E-02
-5.95036E-02 -3.35763E-02 2.89255E-02 3.58957E-02 A8 = 1.93789E-02
8.09953E-02 7.43222E-02 1.60019E-02 -8.47671E-03 A10 = 1.02152E-02
-1.93743E-02 -4.56612E-02 -5.43808E-03 6.27230E-04 A12 =
-3.04254E-02 -1.24281E-02 1.24099E-02 -2.54820E-03 5.61759E-05 A14
= 5.78229E-03 -1.06900E-03 -1.07278E-04 -1.63681E-05 A16 =
4.38160E-05 6.91035E-07
[0058] With reference to Table 4 and FIG. 2B for an optical imaging
lens assembly of this preferred embodiment, the optical imaging
lens assembly has a focal length f=3.82 (mm), an f-number Fno=2.70,
and a half of maximum view angle HFOV=30.6.degree.. After the
optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 6 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00006 TABLE 6 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.0
R.sub.10/CT.sub.5 1.90 V.sub.3 - V.sub.4 30.3 f/R.sub.9 1.55
T.sub.23/T.sub.34 0.57 f/f.sub.3 1.25 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.80 S.sub.d/T.sub.d 0.83 R.sub.4/R.sub.3 0.42 TTL/ImgH
2.03 R.sub.6/CT.sub.3 -1.70
[0059] According to the optical data as shown in Table 4 and the
series of aberration curves as shown in FIG. 2B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Third Preferred Embodiment
[0060] With reference to FIGS. 3A and 3B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the third preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: a first lens element 310 with positive
refractive power having a convex object-side surface 311 and a
convex image-side surface 312, both being aspheric, and made of
plastic; a stop, which here is an aperture stop 300; a second lens
element 320 with negative refractive power having a convex
object-side surface 321 and a concave image-side surface 322, both
being aspheric, and made of plastic; a third lens element 330 with
positive refractive power having a concave object-side surface 331
and a convex image-side surface 332, both being aspheric, and made
of plastic; a fourth lens element 340 with negative refractive
power having a convex object-side surface 341 and a concave
image-side surface 342, both being aspheric, and made of plastic; a
fifth lens element 350 with negative refractive power having a
convex object-side surface 351 and a concave image-side surface
352, both being aspheric and having at least one inflection point,
and made of plastic; an IR-filter 360 made of panel glass for
adjusting a wavelength section of the light of an image; and an
image sensor 380 at an image plane 370.
TABLE-US-00007 TABLE 7 Optical data of this preferred embodiment f
= 4.10 mm, Fno = 3.20, HFOV = 30.4 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 2.219824 (ASP) 0.619 Plastic 1.535 56.3 3.46 2
-9.989920 (ASP) 0.070 3 Ape. Stop Plano 0.000 4 Lens 2 3.679708
(ASP) 0.357 Plastic 1.634 23.8 -4.91 5 1.622461 (ASP) 0.268 6 Lens
3 -5.040810 (ASP) 0.807 Plastic 1.535 56.3 3.90 7 -1.556671 (ASP)
0.349 8 Lens 4 77.297128 (ASP) 0.530 Plastic 1.607 26.6 -20.58 9
10.732372 (ASP) 0.511 10 Lens 5 5.829793 (ASP) 0.723 Plastic 1.535
56.3 -5.06 11 1.768374 (ASP) 0.405 12 IR-filter Plano 0.210 Glass
1.517 64.2 -- 13 Plano 0.381 14 Image Plano -- Note: Reference
wavelength is 587.6 nm. ASP stands for aspherical surfaces.
[0061] The optical data of this preferred embodiment are listed in
Table 7, wherein the object-side surfaces and the image-side
surfaces of the first lens element 310 to the fifth lens element
350 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 8 as
follows:
TABLE-US-00008 TABLE 8 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 7.91025E-01 -1.50116E+01
-7.16942E+00 -1.64789E-01 1.98014E+01 A4 = 1.34657E-02 1.76163E-02
-1.35595E-01 -1.78184E-01 -7.40688E-02 A6 = 7.45839E-03 2.19128E-02
7.08881E-02 4.92893E-02 -2.79222E-01 A8 = -7.47106E-03 -3.53591E-02
-1.58784E-01 -5.13263E-02 7.50580E-01 A10 = 2.81792E-02
-1.74561E-01 -9.92414E-03 -6.08920E-02 -2.12005E+00 A12 =
-3.08611E-02 1.86779E-01 1.20118E-01 2.05433E-01 1.61812E+00
Surface # 7 8 9 10 11 k = -1.26265E+00 9.91108E+02 2.42641E+01
-4.58094E+00 -6.22670E+00 A4 = -1.31007E-01 -4.50178E-02
-3.16168E-02 -2.36609E-01 -1.11104E-01 A6 = -7.18821E-02
-6.79386E-02 -3.81724E-02 4.09470E-02 3.32119E-02 A8 = 1.70440E-02
7.61836E-02 7.30484E-02 1.58387E-02 -6.85371E-03 A10 = 6.40928E-03
-2.12865E-02 -4.61711E-02 -4.42085E-03 4.05067E-04 A12 =
-5.28925E-02 -1.29945E-02 1.24453E-02 -2.56142E-03 4.54240E-05 A14
= 7.44290E-03 -1.04168E-03 -3.45591E-04 -1.19253E-05 A16 =
1.90146E-04 4.96120E-07
[0062] With reference to Table 7 and FIG. 3B for an optical imaging
lens assembly of this preferred embodiment, the optical imaging
lens assembly has a focal length f=4.10 (mm), an f-number Fno=3.20,
and a half of maximum view angle HFOV=30.4.degree.. After the
optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 9 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00009 TABLE 9 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.5
R.sub.10/CT.sub.5 2.45 V.sub.3 - V.sub.4 29.7 f/R.sub.9 0.70
T.sub.23/T.sub.34 0.77 f/f.sub.3 1.05 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.64 S.sub.d/T.sub.d 0.84 R.sub.4/R.sub.3 0.44 TTL/ImgH
2.10 R.sub.6/CT.sub.3 -1.93
[0063] According to the optical data as shown in Table 7 and the
series of aberration curves as shown in FIG. 3B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Fourth Preferred Embodiment
[0064] With reference to FIGS. 4A and 4B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the fourth preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: a first lens element 410 with positive
refractive power having a convex object-side surface 411 and a
convex image-side surface 412, both being aspheric, and made of
plastic; a stop, which here is an aperture stop 400; a second lens
element 420 with negative refractive power having a convex
object-side surface 421 and a concave image-side surface 422, both
being aspheric, and made of plastic; a third lens element 430 with
positive refractive power having a concave object-side surface 431
and a convex image-side surface 432, both being aspheric, and made
of plastic; a fourth lens element 440 with negative refractive
power having a concave object-side surface 441 and a concave
image-side surface 442, both being aspheric, and made of plastic; a
fifth lens element 450 with negative refractive power having a
convex object-side surface 451 and a concave image-side surface
452, both being aspheric and having at least one inflection point,
and made of plastic; an IR-filter 460 made of panel glass for
adjusting a wavelength section of the light of an image; and an
image sensor 480 at an image plane 470.
TABLE-US-00010 TABLE 10 Optical data of this preferred embodiment f
= 3.94 mm, Fno = 2.90, HFOV = 31.2 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 2.220683 (ASP) 0.611 Plastic 1.535 56.3 3.51 2
-11.032079 (ASP) 0.080 3 Ape. Stop Plano -0.010 4 Lens 2 3.461312
(ASP) 0.383 Plastic 1.634 23.8 -4.89 5 1.565390 (ASP) 0.240 6 Lens
3 -6.543694 (ASP) 0.843 Plastic 1.535 56.3 3.74 7 -1.599168 (ASP)
0.290 8 Lens 4 -39.366986 (ASP) 0.545 Plastic 1.607 26.6 -16.92 9
13.982833 (ASP) 0.469 10 Lens 5 3.629229 (ASP) 0.723 Plastic 1.535
56.3 -6.05 11 1.590994 (ASP) 0.405 12 IR-filter Plano 0.210 Glass
1.517 64.2 -- 13 Plano 0.381 14 Image Plano -- Note: Reference
wavelength is 587.6 nm. ASP stands for aspherical surfaces.
[0065] The optical data of this preferred embodiment are listed in
Table 10, wherein the object-side surfaces and the image-side
surfaces of the first lens element 410 to the fifth lens element
450 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 11 as
follows:
TABLE-US-00011 TABLE 11 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 8.16535E-01 -2.00000E+01
-5.11018E+00 -1.30008E-01 2.00000E+01 A4 = 1.37426E-02 1.99005E-02
-1.30030E-01 -1.77328E-01 -8.03876E-02 A6 = 8.18924E-03 3.42759E-02
9.27777E-02 5.69218E-02 -2.81603E-01 A8 = -8.11353E-03 -1.40477E-02
-1.50886E-01 -4.42934E-02 7.84469E-01 A10 = 3.19571E-02
-1.71251E-01 -2.12746E-02 -7.32451E-02 -2.04910E+00 A12 =
-2.73626E-02 1.47055E-01 8.65661E-02 1.54950E-01 1.51126E+00
Surface # 7 8 9 10 11 k = -1.31275E+00 -6.17968E+03 4.68711E+01
-2.78126E+00 -4.78155E+00 A4 = -1.29542E-01 -4.27384E-02
-2.67319E-02 -2.38073E-01 -1.13250E-01 A6 = -7.01553E-02
-6.70726E-02 -3.74279E-02 3.64501E-02 3.37049E-02 A8 = 2.03122E-02
7.67598E-02 7.28292E-02 1.75730E-02 -6.84670E-03 A10 = 1.07048E-02
-2.11536E-02 -4.63053E-02 -3.61504E-03 4.18856E-04 A12 =
-4.67978E-02 -1.29295E-02 1.23774E-02 -2.58914E-03 4.19982E-05 A14
= 7.10019E-03 -1.03624E-03 -3.57369E-04 -1.27808E-05 A16 =
2.06443E-04 8.04600E-07
[0066] With reference to Table 10 and FIG. 4B for an optical
imaging lens assembly of this preferred embodiment, the optical
imaging lens assembly has a focal length f=3.94 (mm), an f-number
Fno=2.90, and a half of maximum view angle HFOV=31.2.degree.. After
the optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 12 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00012 TABLE 12 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.5
R.sub.10/CT.sub.5 2.20 V.sub.3 - V.sub.4 29.7 f/R.sub.9 1.09
T.sub.23/T.sub.34 0.83 f/f.sub.3 1.05 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.66 S.sub.d/T.sub.d 0.83 R.sub.4/R.sub.3 0.45 TTL/ImgH
2.07 R.sub.6/CT.sub.3 -1.90
[0067] According to the optical data as shown in Table 10 and the
series of aberration curves as shown in FIG. 4B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Fifth Preferred Embodiment
[0068] With reference to FIGS. 5A and 5B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the fifth preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: a first lens element 510 with positive
refractive power having a convex object-side surface 511 and a
convex image-side surface 512, both being aspheric, and made of
plastic; a stop, which here is an aperture stop 500; a second lens
element 520 with negative refractive power having a convex
object-side surface 521 and a concave image-side surface 522, both
being aspheric, and made of plastic; a third lens element 530 with
positive refractive power having a concave object-side surface 531
and a convex image-side surface 532, both being aspheric, and made
of plastic; a fourth lens element 540 with negative refractive
power having a concave object-side surface 541 and a convex
image-side surface 542, both being aspheric, and made of plastic; a
fifth lens element 550 with negative refractive power having a
concave object-side surface 551 and a concave image-side surface
552, both being aspheric, the image-side surface 552 having at
least one inflection point, and made of plastic; an IR-filter 560
made of panel glass for adjusting a wavelength section of the light
of an image; and an image sensor 580 at an image plane 570.
TABLE-US-00013 TABLE 13 Optical data of this preferred embodiment f
= 4.41 mm, Fno = 3.00, HFOV = 29.6 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 1.474619 (ASP) 0.691 Plastic 1.530 55.8 2.68 2
-31.833451 (ASP) 0.076 3 Ape. Stop Plano -0.006 4 Lens 2 5.173336
(ASP) 0.300 Plastic 1.633 23.4 -3.65 5 1.559693 (ASP) 0.235 6 Lens
3 -25.532765 (ASP) 0.638 Plastic 1.583 30.2 4.88 7 -2.586935 (ASP)
0.288 8 Lens 4 -7.024586 (ASP) 0.318 Plastic 1.650 21.4 -15.41 9
-23.959056 (ASP) 0.349 10 Lens 5 -75.757576 (ASP) 1.040 Plastic
1.535 56.3 -5.49 11 3.070010 (ASP) 0.405 12 IR-filter Plano 0.210
Glass 1.517 64.2 -- 13 Plano 0.381 14 Image Plano -- Note:
Reference wavelength is 587.6 nm. ASP stands for aspherical
surfaces.
[0069] The optical data of this preferred embodiment are listed in
Table 13, wherein the object-side surfaces and the image-side
surfaces of the first lens element 510 to the fifth lens element
550 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 14 as
follows:
TABLE-US-00014 TABLE 14 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 5.38544E-01 2.00000E+01
4.99528E-01 7.89119E-01 -2.00000E+01 A4 = -1.81825E-02 3.72594E-03
-1.23546E-01 -1.29272E-01 -5.27055E-02 A6 = 7.92447E-03 7.22325E-02
2.22521E-01 1.57905E-01 -1.52118E-01 A8 = -4.47842E-02 1.57575E-02
-2.56299E-01 -5.57670E-03 6.02143E-01 A10 = 5.74699E-02
-1.80098E-01 1.01947E-01 -1.01245E-01 -1.25652E+00 A12 =
-2.70587E-02 1.31935E-01 -6.30382E-02 2.36824E-01 1.36627E+00
Surface # 7 8 9 10 11 k = -2.56133E+00 -9.85755E+01 9.29133E+01
1.00000E+02 -6.14059E+00 A4 = -1.25975E-01 -7.58045E-02
-1.31939E-02 -1.72919E-01 -9.69126E-02 A6 = -6.79790E-02
-1.00251E-01 -4.09038E-02 5.16841E-02 2.94801E-02 A8 = 2.80233E-02
7.46284E-02 6.75250E-02 8.13055E-03 -8.08567E-03 A10 = 1.24002E-02
-1.62710E-02 -4.79143E-02 -8.47219E-03 8.85424E-04 A12 =
-6.51218E-03 -9.70294E-03 1.25041E-02 -2.28012E-03 4.72844E-05 A14
= 6.72061E-03 -4.50138E-04 5.26238E-04 -2.52045E-05 A16 =
1.59268E-04 1.92721E-06
[0070] With reference to Table 13 and FIG. 5B for an optical
imaging lens assembly of this preferred embodiment, the optical
imaging lens assembly has a focal length f=4.41 (mm), an f-number
Fno=3.00, and a half of maximum view angle HFOV=29.6.degree.. After
the optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 15 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00015 TABLE 15 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.4
R.sub.10/CT.sub.5 2.95 V.sub.3 - V.sub.4 8.8 f/R.sub.9 -0.06
T.sub.23/T.sub.34 0.81 f/f.sub.3 0.90 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.91 S.sub.d/T.sub.d 0.80 R.sub.4/R.sub.3 0.30 TTL/ImgH
1.97 R.sub.6/CT.sub.3 -4.05
[0071] According to the optical data as shown in Table 13 and the
series of aberration curves as shown in FIG. 5B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Sixth Preferred Embodiment
[0072] With reference to FIGS. 6A and 6B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the sixth preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: the first lens element 610 with positive
refractive power having a convex object-side surface 611 and a
convex image-side surface 612, both being aspheric, and made of
plastic; a stop, which here is an aperture stop 600; the second
lens element 620 with negative refractive power having a convex
object-side surface 621 and a concave image-side surface 622, both
being aspheric, and made of plastic; the third lens element 630
with positive refractive power having a convex object-side surface
631 and a convex image-side surface 632, both being aspheric, and
made of plastic; the fourth lens element 640 with negative
refractive power having a concave object-side surface 641 and a
convex image-side surface 642, both being aspheric, and made of
plastic; the fifth lens element 650 with positive refractive power
having a convex object-side surface 651 and a concave image-side
surface 652, both being aspheric and having at least one inflection
point, and made of plastic; an IR-filter 660 made of panel glass
for adjusting a wavelength section of the light of an image; and an
image sensor 680 at an image plane 670.
TABLE-US-00016 TABLE 16 Optical data of this preferred embodiment f
= 3.26 mm, Fno = 2.70, HFOV = 35.5 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 3.722397 (ASP) 0.475 Plastic 1.530 55.8 5.84 2
-17.564458 (ASP) 0.179 3 Ape. Stop Plano -0.025 4 Lens 2 2.039145
(ASP) 0.350 Plastic 1.634 23.8 -8.08 5 1.361101 (ASP) 0.248 6 Lens
3 9.118799 (ASP) 0.664 Plastic 1.535 56.3 2.13 7 -1.270115 (ASP)
0.459 8 Lens 4 -0.841349 (ASP) 0.595 Plastic 1.607 26.6 -3.42 9
-1.791941 (ASP) 0.070 10 Lens 5 1.409477 (ASP) 0.884 Plastic 1.535
56.3 16.37 11 1.312832 (ASP) 0.405 12 IR-filter Plano 0.210 Glass
1.517 64.2 -- 13 Plano 0.375 14 Image Plano -- Note: Reference
wavelength is 587.6 nm. ASP stands for aspherical surfaces.
[0073] The optical data of this preferred embodiment are listed in
Table 16, wherein the object-side surfaces and the image-side
surfaces of the first lens element 610 to the fifth lens element
650 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 17 as
follows:
TABLE-US-00017 TABLE 17 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 3.02221E+00 -2.00000E+01
1.81589E+00 -1.27614E+00 2.00000E+01 A4 = 4.25961E-02 9.38867E-02
-1.81055E-01 -2.06402E-01 -7.57190E-02 A6 = 2.03079E-02 8.41057E-02
1.03442E-01 1.84377E-01 -1.20910E-01 A8 = 1.95642E-02 -1.77362E-01
-5.01006E-01 -3.88595E-01 3.23539E-01 A10 = -2.17286E-02
2.89712E-01 1.29555E+00 6.12348E-01 -8.06574E-01 A12 = 2.36549E-02
-1.39804E-01 -2.12119E+00 -5.12463E-01 5.46858E-01 Surface # 7 8 9
10 11 k = -3.94719E+00 -5.00628E+00 -3.39387E+00 -9.28897E+00
-5.66396E+00 A4 = -1.84232E-01 -1.21106E-01 -1.75358E-04
-1.54067E-01 -7.13963E-02 A6 = -1.24669E-01 9.77620E-03
-3.78529E-02 1.44772E-02 2.19512E-02 A8 = 1.65269E-01 1.06136E-01
7.96447E-02 2.23371E-02 -5.12878E-03 A10 = -3.70162E-02
-3.17441E-02 -4.12473E-02 -1.56705E-02 1.92539E-04 A12 =
-1.64329E-01 -3.05174E-02 1.30703E-02 1.09028E-03 5.05435E-05 A14 =
-3.08256E-03 -2.40600E-03 2.42550E-03 2.59295E-06 A16 =
-5.78299E-04 -1.48388E-06
[0074] With reference to Table 16 and FIG. 6B for an optical
imaging lens assembly of this preferred embodiment, the optical
imaging lens assembly has a focal length f=3.26 (mm), an f-number
Fno=2.70, and a half of maximum view angle HFOV=35.5.degree.. After
the optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 18 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00018 TABLE 18 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.0
R.sub.10/CT.sub.5 1.48 V.sub.3 - V.sub.4 29.7 f/R.sub.9 2.31
T.sub.23/T.sub.34 0.54 f/f.sub.3 1.53 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.65 S.sub.d/T.sub.d 0.83 R.sub.4/R.sub.3 0.67 TTL/ImgH
1.96 R.sub.6/CT.sub.3 -1.91
[0075] According to the optical data as shown in Table 16 and the
series of aberration curves as shown in FIG. 6B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
Seventh Preferred Embodiment
[0076] With reference to FIGS. 7A and 7B for a schematic view and a
series of aberration curves of an optical imaging lens assembly in
accordance with the seventh preferred embodiment of the present
disclosure respectively, the optical imaging lens assembly,
sequentially arranged from an object side to an image side along an
optical axis, comprises: the first lens element 710 with positive
refractive power having a convex object-side surface 711 and a
convex image-side surface 712, both being aspheric, and made of
plastic; a stop, which here is an aperture stop 700; the second
lens element 720 with negative refractive power having a convex
object-side surface 721 and a concave image-side surface 722, both
being aspheric, and made of plastic; the third lens element 730
with positive refractive power having a concave object-side surface
731 and a convex image-side surface 732, both being aspheric, and
made of plastic; the fourth lens element 740 with negative
refractive power having a concave object-side surface 741 and a
convex image-side surface 742, both being aspheric, and made of
plastic; the fifth lens element 750 with positive refractive power
having a convex object-side surface 751 and a concave image-side
surface 752, both being aspheric and having at least one inflection
point, and made of plastic; an IR-filter 760 made of panel glass
for adjusting a wavelength section of the light of an image; and an
image sensor 780 at an image plane 770.
TABLE-US-00019 TABLE 19 Optical data of this preferred embodiment f
= 3.64 mm, Fno = 2.80, HFOV = 31.0 deg. Focal Surface # Curvature
Radius Thickness Material Index Abbe # length 0 Object Plano
Infinity 1 Lens 1 1.601949 (ASP) 0.556 Plastic 1.530 55.8 2.99 2
-146.146049 (ASP) 0.062 3 Ape. Stop Plano 0.008 4 Lens 2 4.628866
(ASP) 0.391 Plastic 1.634 23.8 -4.38 5 1.679397 (ASP) 0.416 6 Lens
3 -8.439197 (ASP) 0.508 Plastic 1.535 56.3 4.79 7 -2.007234 (ASP)
0.608 8 Lens 4 -0.808228 (ASP) 0.289 Plastic 1.607 26.6 -6.01 9
-1.178080 (ASP) 0.070 10 Lens 5 1.075468 (ASP) 0.596 Plastic 1.535
56.3 9.87 11 1.089824 (ASP) 0.405 12 IR-filter Plano 0.210 Glass
1.517 64.2 -- 13 Plano 0.511 14 Image Plano -- Note: Reference
wavelength is 587.6 nm. ASP stands for aspherical surfaces.
[0077] The optical data of this preferred embodiment are listed in
Table 19, wherein the object-side surfaces and the image-side
surfaces of the first lens element 710 to the fifth lens element
750 comply with the aspherical surface formula as given in Equation
(18), and their aspheric coefficients are listed in Table 20 as
follows:
TABLE-US-00020 TABLE 20 Aspheric coefficients of this preferred
embodiment Surface # 1 2 4 5 6 k = 9.61127E-01 2.00000E+01
8.17125E+00 9.55319E-01 2.00000E+01 A4 = -1.23067E-02 2.82220E-03
-1.13399E-01 -1.21421E-01 -8.98736E-02 A6 = -5.22076E-03
9.39532E-02 1.19094E-01 7.88987E-02 -1.88241E-01 A8 = 2.71318E-03
-1.64406E-01 -1.73535E-01 -6.01553E-02 3.88412E-01 A10 =
-5.55961E-03 1.84195E-01 1.34584E-01 1.04269E-01 -7.89076E-01 A12 =
4.07225E-03 -9.72212E-02 -9.56996E-02 -6.11421E-02 6.29515E-01
Surface # 7 8 9 10 11 k = -8.31356E+00 -5.93838E+00 -3.97892E+00
-7.52866E+00 -4.10697E+00 A4 = -1.65464E-01 -6.54219E-02
-4.85093E-02 -1.62316E-01 -1.14341E-01 A6 = -6.77360E-02
-2.43177E-02 -3.87999E-02 -1.42159E-02 3.43945E-02 A8 = 1.21137E-01
8.96440E-02 8.67309E-02 3.41635E-02 -6.84089E-03 A10 = -1.72041E-01
-1.64081E-02 -3.88205E-02 -1.41233E-02 -8.78604E-05 A12 =
7.93465E-02 -1.15833E-02 1.29346E-02 -6.80762E-04 1.19797E-04 A14 =
2.72550E-03 -2.93373E-03 1.73516E-03 2.19126E-05 A16 = -2.64387E-04
-6.10152E-06
[0078] With reference to Table 19 and FIG. 7B for an optical
imaging lens assembly of this preferred embodiment, the optical
imaging lens assembly has a focal length f=3.64 (mm), an f-number
Fno=2.80, and a half of maximum view angle HFOV=31.0.degree.. After
the optical data of this preferred embodiment are calculated and
derived, the optical imaging system for pickup satisfies related
conditions as shown in Table 21 below, and the related symbols have
been described above and thus will not be described again.
TABLE-US-00021 TABLE 21 Data of related relations of this preferred
embodiment Relation Data Relation Data V.sub.1 - V.sub.2 32.0
R.sub.10/CT.sub.5 1.83 V.sub.3 - V.sub.4 29.7 f/R.sub.9 3.39
T.sub.23/T.sub.34 0.68 f/f.sub.3 0.76 (R.sub.1 + R.sub.2)/(R.sub.1
- R.sub.2) -0.98 S.sub.d/T.sub.d 0.82 R.sub.4/R.sub.3 0.36 TTL/ImgH
1.91 R.sub.6/CT.sub.3 -3.95
[0079] According to the optical data as shown in Table 19 and the
series of aberration curves as shown in FIG. 7B, the optical
imaging lens assembly in accordance with this preferred embodiment
of the present disclosure provides good correction results in
aspects of the longitudinal spherical aberration, astigmatic field
curving, and distortion.
[0080] In the optical imaging lens assembly of the present
disclosure, the lens elements can be made of glass or plastic. For
the lens elements made of glass, the optical imaging system for
pickup can have higher degree of freedom in selecting design
parameters. For the lens elements made of plastic, the production
cost can be lowered.
[0081] In the optical imaging lens assembly of the present
disclosure, if the lens element has a convex surface, then the
surface of the lens element is convex at a position in proximity to
the axis; and if the lens element has a concave surface, then the
surface of the lens element is concave at a position in proximity
to the axis.
[0082] In the optical imaging lens assembly of the present
disclosure, at least one stop such as a glare stop or a field stop
can be provided for reducing stray lights to improve the image
quality, to limit the field size, or other functionalities. Any of
the stops can be positioned in front of the first lens element,
between lens elements, or before the image plane of the optical
imaging lens assembly according to the preference of the optical
designer. Additionally, the optical imaging lens assembly can be
utilized in 3D (three-dimensional) applications.
[0083] Tables 1 to 21 show changes of values of an optical imaging
lens assembly in accordance with different preferred embodiments of
the present disclosure respectively, and even if different values
are used, products of the same structure are intended to be covered
by the scope of the present disclosure. It is noteworthy to point
out that the aforementioned description and the illustration of
related drawings are provided for the purpose of explaining the
technical characteristics of the present disclosure, but not
intended for limiting the scope of the present disclosure.
* * * * *