U.S. patent application number 15/461436 was filed with the patent office on 2017-10-05 for true calibration by matching relative target icon and indicators to relative target.
This patent application is currently assigned to Evrio, Inc.. The applicant listed for this patent is John Livacich, Kendyl A Roman. Invention is credited to John Livacich, Kendyl A Roman.
Application Number | 20170284771 15/461436 |
Document ID | / |
Family ID | 59960371 |
Filed Date | 2017-10-05 |
United States Patent
Application |
20170284771 |
Kind Code |
A1 |
Roman; Kendyl A ; et
al. |
October 5, 2017 |
True Calibration by Matching Relative Target Icon and Indicators to
Relative Target
Abstract
An improved display provides a relative aiming point indicated
in relation to a relative target icon or user selectable target
reference image. A range finding device is calibrated, using a
relative target, to a specific firing device having a sight, for
example, a rifle having a riflescope calibrated at 100 yards, or a
bow having a bow sight calibrated with a 20-yard pin. The user
places the riflescope cross hairs on the point visualized in the
display relative to the relative target icon. In bow mode, user
places a bow sight pin, for example, the 20-yard pin, on the point
visualized in the display relative to the relative target icon. The
relative aiming point is separate and distinct from an absolute
aiming point that may be visualized in the display relative to the
visual image of the target.
Inventors: |
Roman; Kendyl A; (Sunnyvale,
CA) ; Livacich; John; (Sunnyvale, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Roman; Kendyl A
Livacich; John |
Sunnyvale
Sunnyvale |
CA
CA |
US
US |
|
|
Assignee: |
Evrio, Inc.
Santa Clara
CA
|
Family ID: |
59960371 |
Appl. No.: |
15/461436 |
Filed: |
March 16, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15150393 |
May 9, 2016 |
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15461436 |
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14591950 |
Jan 8, 2015 |
9335120 |
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15150393 |
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14471786 |
Aug 28, 2014 |
9057587 |
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14591950 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F41G 1/38 20130101; F41G
1/52 20130101; F41G 1/54 20130101; F41G 1/473 20130101; F41G 3/165
20130101; F41G 3/06 20130101; F41G 1/467 20130101; F41G 3/142
20130101; F41G 3/08 20130101 |
International
Class: |
F41G 1/473 20060101
F41G001/473; F41G 3/16 20060101 F41G003/16 |
Claims
1. An electronic display for an electronic range finding device for
indicating to a user a relative aiming point for a target, the
electronic display comprising: a) a visual image of the target and
the surroundings of the target, b) a cross hairs displayed over the
visual image and positioned centrally in the display, wherein the
cross hairs is used to aim the range finding device, c) a relative
target icon displayed over the visual image and positioned
peripherally in the display, wherein the relative target icon
comprises a plurality of concentric icon squares, wherein a height
of each concentric square corresponds to a predetermined target
height, and d) a relative aiming point displayed over the visual
image and positioned centered relative to the relative target icon,
wherein the relative aiming point corresponds to a sight or scope
calibrated for the predetermined range, wherein, when the range
finding device determines a range to the target, the relative
aiming point is dynamically displayed to indicate where to aim the
calibrated sight or scope.
2. The electronic display of claim 1 wherein the height of one of
the plurality of concentric icon squares corresponds to 20
inches.
3. The electronic display of claim 1 wherein the heights the
plurality of concentric squares icon corresponds to multiples of 5
inches.
4. The electronic display of claim 1 wherein the height of one of
the plurality of concentric icon squares corresponds to 50
centimeters.
5. The electronic display of claim 1 wherein the heights the
plurality of concentric icon squares corresponds to multiples of
12.5 centimeters.
6. The electronic display of claim 1 further comprising a
horizontal distance indicator, wherein the range to the target is
displayed when the relative aiming point is dynamically
displayed.
7. The electronic display of claim 1 further comprising a reference
image aligned to the position of to the relative target icon.
8. The electronic display of claim 7 wherein the reference image is
one of the group of a deer reference image and an antelope
reference image.
9. The electronic display of claim 1 further comprising a target
type indicator, wherein the target type indicator selectively
displays the type of target being used as a reference from the
group of a 20 inch target, a 50 cm target, a deer, an elk, and an
antelope.
10. A system for indicating to a user a relative aiming point for a
target, the system comprising: a) an electronic range finding
device comprising: i) electronic display comprising: (1) a visual
image of the target and the surroundings of the target, (2) a cross
hairs displayed over the visual image and positioned centrally in
the display, wherein the cross hairs is used to aim the range
finding device, (3) a relative target icon displayed over the
visual image and positioned peripherally in the display, wherein
the relative target icon comprises a plurality of concentric icon
squares, wherein a height of each concentric square corresponds to
a predetermined target height, (4) a relative aiming point
displayed over the visual image and positioned centered relative to
the relative target icon, wherein the relative aiming point
corresponds to a sight or scope calibrated for the predetermined
range, and (5) a horizontal distance indicator, ii) a range sensor
for determining a first line of sight distance to the target, iii)
a tilt sensor for determining an angle to the target, iv) at least
one input, v) a lens for receiving the visual image, wherein, when
the range finding device determines a range to the target, the
relative aiming point is dynamically displayed to indicate where to
aim the calibrated sight or scope, and the range to the target is
displayed in the horizontal distance indicator, and b) a printed
relative target comprising: i) a plurality of concentric target
squares, ii) a target center, and iii) a scale showing the vertical
distance from the target center toward the bottom of the relative
target, wherein concentric target squares of the printed relative
target correspond to the concentric icon squares of the relative
target icon, whereby a user can visually align the concentric
target squares in the visual image with the concentric icon
squares.
11. The system of claim 10 wherein the height of one concentric
target square of the plurality of concentric target squares
measures 20 inches, wherein the height of one concentric icon
square of the plurality of concentric icon squares corresponds to
20 inches, and wherein the distance between the displayed position
of relative aiming point and the center of the relative target icon
corresponds to the number of inches that the calibrated sight or
scope should be aimed above the target.
12. The system of claim 10 wherein the height of one concentric
target square of the plurality of concentric target squares
measures 50 centimeters, wherein the height of one concentric icon
square of the plurality of concentric icon squares corresponds to
50 centimeters, and wherein the distance between the displayed
position of relative aiming point and the center of the relative
target icon corresponds to the number of centimeters that the
calibrated sight or scope should be aimed above the target.
13. The system of claim 10 further comprising a method of
calibrating the range finding device to a specific firing device
and specific projectile, the method comprising steps of: a) placing
the relative target at a first shot distance, aiming the calibrated
sight or scope, and firing the projectile making a first shot mark,
b) placing the relative target at a second shot distance, aiming
the calibrated sight or scope, and firing the projectile making a
second shot mark, c) placing the range finding device in
calibration setup mode, d) visually aligning the concentric target
squares in the visual image with the concentric icon squares, e)
selecting the first shot distance, f) adjusting the relative aiming
point indicator to visually match the first shot mark, g) selecting
the second shot distance, and h) adjusting the relative aiming
point indicator to visually match the second shot mark.
14. The system of claim 13, wherein the method of calibrating the
range finding device further comprises a step of selecting a sight
in, or zeroed at, distance.
15. The system of claim 13, wherein the method of calibrating the
range finding device further comprises steps of: placing the
relative target at a third shot distance, aiming the calibrated
sight or scope, and firing the projectile making a third shot mark,
selecting the third shot distance, and adjusting the relative
aiming point indicator to visually match the third shot mark.
16. A printed relative target comprising: i) a plurality of
concentric target squares, ii) a target center, and iii) a scale
showing the vertical distance from the target center toward the
bottom of the relative target, wherein the scale comprises a
plurality of equally spaced horizontal lines and a plurality of
numbers, wherein the horizontal lines and numbers indicate the
vertical distance in one of the group of inches or centimeters.
17. The printed relative target of claim 16 wherein the height of
one of the plurality of concentric target squares corresponds to 20
inches, and wherein the scale is in inches.
18. The printed relative target of claim 16 wherein the heights of
the plurality of concentric target squares are in multiples of 5
inches, and wherein the scale is in inches.
19. The printed relative target of claim 16 wherein a first and a
third of the plurality of concentric target squares are a solid
dark color and a second and a fourth of the plurality of concentric
target squares is white.
20. The electronic display of claim 1 wherein the electronic
display comprises a predetermined number of display segments which
are superimposed over the visual image, the display segments
comprising: e) a plurality of aiming point indicators positioned
centered relative to the relative target icon, wherein one of the
plurality of aiming point indicators is selectively illuminated to
display the relative aiming point, and f) a plurality of path
indictors positioned centered relative to the cross hair, wherein
one of the plurality of path indictors is selectively illuminated
to display an absolute aiming point.
Description
RELATED APPLICATIONS
[0001] This application is a continuation-in-part of co-pending
U.S. patent application Ser. No. 15/150,393, which was a
continuation of U.S. patent application Ser. No. 14/591,950, now
U.S. Pat. No. 9,335,120.
[0002] U.S. patent application Ser. No. 14/591,950 is a
continuation-in-part of U.S. patent application Ser. No.
14/471,786, which was filed on Aug. 28, 2014, now U.S. Pat. No.
9,057,587.
[0003] U.S. patent application Ser. Nos. 15/150,393, 14/591,950 and
14/471,786 are included herein by reference.
[0004] This application claims priority based on U.S. patent
application Ser. Nos. 15/150,393, 14/591,950 and 14/471,786.
BACKGROUND--FIELD OF THE INVENTION
[0005] The present invention relates to calibration of a handheld
rangefinder to match the ballistics of a specific firing device,
such as a bow, pistol, or rifle, with specific projectiles using a
relative target and relative target icon.
BACKGROUND--DESCRIPTION OF PRIOR ART
[0006] Bows and arrows, spears, crossbows, guns, and artillery have
been used for sport, hunting, and military.
[0007] An arrow is typically shot using the arms to pull back the
bow string, and to aim and sight by holding the bow and arrow next
to the archer's eye. More recently bow sights have been added to
all types of bows. Typically a bow sight comprises a plurality of
pins that may be adjusted by the archer for aiming at targets at
different distances. Some bow sights have a single adjustable pin
that is moved to the match the distance to the target.
[0008] Balls and/or bullets are typically shot from a gun using the
arms to aim and sight by aligning the gun sights or gun scope
reticle with the target.
[0009] Artillery balls and shells are typically shot by adjusting
the aim mechanically.
[0010] Arrows, spears, balls, bullets, and shells when fired follow
a ballistic trajectory. Such projectiles, which are not
self-propelled, move through air according to a generally parabolic
(ballistic) curve due primarily to the effects of gravity and air
drag.
[0011] Rifle and bow scopes conventionally have been fitted with
reticles of different forms. Some have horizontal and vertical
cross hairs. Others reticles such as mil-dot add evenly spaced dots
for elevation and windage along the cross hairs. U.S. Design Pat.
No. D522,030, issued on May 30, 2006, shows a SR reticle and
graticle design for a scope. Various reticles, such as Multi Aim
Point (MAP) and Dot are provided, for example, by Hawke Optics
(http://hawkeoptics.com). These reticles are fixed in that the
display does not change based on range information. Also, these
reticles indicate the approximate hold-over position in that they
are positioned under the center of the scope, i.e. below where the
cross hairs intersect. They are not necessarily precise, for
example, for a specific bow and archer or for a specific rifle and
ammunition, but are approximation for the general case.
[0012] Hunters and other firearm and bow users commonly utilize
handheld rangefinders (see device 10 in FIG. 2) to determine ranges
to targets. Generally, handheld rangefinders utilize lasers to
acquire ranges for display to a hunter. Utilizing the displayed
ranges, the hunter makes sighting corrections to facilitate
accurate shooting.
[0013] For example, U.S. Pat. No. 7,658,031, issued Feb. 9, 2010,
discloses handheld rangefinder technology from Bushnell, Inc, and
is hereby included by reference. As shown in FIG. 1, a handheld
rangefinder device 10 generally includes a range sensor 12 operable
to determine a first range to a target, a tilt sensor 14 operable
to determine an angle to the target relative to the device 10, and
a computing element 16, coupled with the range sensor 12 and the
tilt sensor 14, operable to determine a hold over value based on
the first range and the determined angle. The range information is
displayed on a display 30. A housing 20 contains the elements of
the device 10. Bushnell Angle Range Compensation (ARC) rangefinders
show the first linear range to the target and also show an angle
and a second range, which represents the horizontal distance to the
target. Handheld rangefinders, telescope sights, and other optical
devices typically comprise a laser range sensor and an
inclinometer.
[0014] The range information is superimposed over the image that is
seen through the optics. For example, U.S. Design Pat. No.
D453,301, issued Feb. 5, 2002, shows an example of a design for a
display for a Bushnell rangefinder, and is hereby included by
reference. FIG. 2 shows an exemplary display 30 appearing in a
handheld rangefinder device 10.
[0015] With convention rangefinder and a rifle there is no
correlation between the display of the rangefinder and the user's
individual rifle sight or scope. To make an effective shot requires
several steps. All of the movement and time taken during these
steps will likely be noticed by the target and allow the target an
opportunity to move resulting in having to repeat the process or
miss the shot altogether.
[0016] Further in order to show an accurate aiming point a
rangefinder needs to be calibrated to a specific bow and rifle or
other firearm.
[0017] What is needed is an improved display that provides a
relative aiming point relative to a reference with a predetermined
size or height, so the user can visualize where to aim.
SUMMARY OF THE INVENTION
[0018] The present invention solves the above-described problems
and provides a distinct advance in the art of rangefinder display.
More particularly, the invention provides a display that provides a
relative aiming point relative to a reference with a predetermined
size or height, so the user can visualize where to aim. Such
information facilitates accurate, effective, and safe firearm
use.
[0019] In multiple embodiments, a display provides a relative
aiming point that is display relative to a reference that shows the
relative target size.
[0020] In some embodiments of a display with relative aiming point,
the reference is a relative target icon.
[0021] In some embodiments of a display with relative aiming point,
the reference is a reference image.
[0022] In some embodiments of a display with relative aiming point,
the reference is a reference indicator, shown as reference
lines.
[0023] In some embodiments of a display with relative aiming point,
the display further comprises reference multiples.
[0024] In some embodiments of a display with relative aiming point,
the reference is a user selectable image.
[0025] In some embodiments of a display with relative aiming point,
the reference is a generic reference image.
[0026] In some embodiments of a display with relative aiming point,
the reference is an enlarged target reference.
[0027] In some embodiments of a display with relative aiming point,
the reference is a zoomed target image.
[0028] Accordingly, it is an objective of the present invention to
provide a display that includes a relative target icon that is
aligned to a relative target and is used to calibrate to any bow
and arrow or other firearm.
[0029] Other aspects and advantages of the present invention will
be apparent from the following detailed description of the
preferred embodiments and the accompanying drawing figures.
OBJECTS AND ADVANTAGES
[0030] Accordingly, the present invention includes the following
advantages: [0031] a) To provide a display that provides a relative
aiming point. [0032] b) To provide a display that provides a
relative target icon. [0033] c) To provide a relative target icon
in the display of range finding device that can be used to
calibrate the range finding device to the ballistic curve for a
specific firing device and specific projectile, such as a specific
bow and arrow and a specific rifle and ammunition. [0034] d) To
provide a universal calibration method for any range finding
device. [0035] e) To provide a display that provides a relative
aiming point relative to a reference target point. [0036] f) To
provide a display that provides a relative aiming point relative to
an enlarged actual image. [0037] g) To provide a display that
provides a relative aiming point relative to a reference image.
[0038] h) To provide a display that provides a relative aiming
point relative to a reference indicator. [0039] i) To provide a
display that provides a relative aiming point relative to a
reference indicator and reference multiples. [0040] j) To provide a
display that provides a relative aiming point relative to a generic
reference. [0041] k) To provide a display that provides dynamic
information regarding a projectile trajectory. [0042] l) To provide
a rangefinder display having variable focal range (or zoom) with
automatically adjusting indications of a virtual aiming point.
[0043] m) To provide an improved rangefinder which enable the user
to visualize the projectile's trajectory creating confidence of a
clear and safe shot. [0044] n) To provide a digital display of a
relative aiming point. [0045] o) To provide a digital display of a
relative aiming point and zoom control. [0046] p) To provide an
improved display of line of sight distance, horizontal distance,
and angle. [0047] q) To provide a relative target that can be used
to determine the ballistic curve for a specific firing device and
projectile, such as a specific bow and arrow and a specific rifle
and ammunition.
DRAWING FIGURES
[0048] A preferred embodiment of the present invention is described
in detail below with reference to the attached drawing figures,
wherein:
[0049] FIG. 1 is a block diagram of a rangefinder device;
[0050] FIG. 2 shows the appearance of an exemplary display within a
device;
[0051] FIG. 3A is a diagram illustrating a first range to a target
and an associated projectile trajectory;
[0052] FIG. 3B is a diagram illustrating a second range and an
associated projectile trajectory to the target of FIG. 3A when the
target is elevated, i.e. at a positive angle;
[0053] FIG. 3C is a diagram illustrating a second range and an
associated projectile trajectory to the target when the target is
at a lower elevation, i.e. at negative angle;
[0054] FIG. 4 illustrates a display having an aiming point;
[0055] FIG. 5 shows a high-resolution digital display providing a
clear shot indication and also shows optional game inputs;
[0056] FIG. 6 is a rear perspective view of a digital rangefinder
device;
[0057] FIG. 7 is a front perspective view of the rangefinder device
of FIG. 6;
[0058] FIGS. 8A through 8F illustrate displays showing embodiments
of a relative aiming point 1000 shown relative to a reference of a
predetermine size, the reference shown by various means such as a
reference image 1002, reference indicators 1006 lines, a generic
reference 1005, or a relative target icon 1120.
[0059] FIGS. 9A through 9C illustrate various options for showing a
relative aiming point relative to a reference indicator, including
an optional reference target or wind correction;
[0060] FIGS. 10A through 10C illustrate various options for showing
line of sight distance, horizontal distance, and angle;
[0061] FIGS. 11A through 11D show embodiments of layout for the
display segments;
[0062] FIGS. 12A through 12I show embodiments of various reference
images;
[0063] FIG. 13 illustrates a digital display showing a relative
aiming point relative to an enlarged target image;
[0064] FIGS. 14A and 14B illustrate embodiments of digital displays
showing relative aiming point relative to an zoomed target image,
and zoom controls;
[0065] FIG. 15 illustrates a digital embodiment of a display
showing various settings;
[0066] FIGS. 16A through 16C shows embodiments of a printed
relative target;
[0067] FIGS. 17A through 17D illustrates an example of preparation
of a relative target with a specific bow and specific arrow;
[0068] FIGS. 18A through 18F illustrates an example of calibrating
a range finding device to a specific bow and specific arrow using a
relative target icon aligned with a prepared relative target;
[0069] FIGS. 19A through 19D illustrates an example of preparation
of a relative target with a specific rifle and specific
ammunition;
[0070] FIGS. 20A through 20F illustrates an example of calibrating
a range finding device to a specific rifle and specific ammunition
using a relative target icon aligned with a prepared relative
target;
[0071] FIGS. 19A through 19D illustrates an alternate example of
preparation of a relative target with a specific rifle and specific
ammunition;
[0072] FIGS. 20A through 20F illustrates an alternate example of
calibrating a range finding device to a specific rifle and specific
ammunition using a relative target icon aligned with a prepared
relative target;
[0073] FIGS. 21A through 21D illustrate the steps of the relative
target preparation process with a specific rifle and specific
ammunition; and
[0074] FIGS. 22A through 22F show the rifle ballistic calibration
process used to calibrate the device.
[0075] The drawing figures do not limit the present invention to
the specific embodiments disclosed and described herein. The
drawings are not necessarily to scale, emphasis instead being
placed upon clearly illustrating the principles of the
invention.
TABLE-US-00001 REFERENCE NUMERALS IN DRAWINGS 1 a-c line of
departure 2 a-c projectile trajectory 3 a-c line of sight 4
horizontal line 10 device 11 iPhone 12 range sensor 14 tilt sensor
16 computing element 18 memory 20 housing 21 alternate housing 22
eyepiece 23 housing slot 24 lens 25 digital camera 26 distal end 27
handle 28 proximate end 30 display 31 high-resolution display 32
inputs 34 a-b dipaly inputs 35 visor or shroud 100 archer or user
102 bow 104 arrow 110 bow sight 198 calibration instructions 220
twenty-yard pin 240 forty-yard pin 260 sixty-yard pin 300 rifle 900
cross hairs 910 distance indicator 912 angle indicator 914
horizontal distance indicator 920 twenty-yard indicator 930
(selectable) path indicators 932 off screen indicator 940
forty-yard indicator 950 clear shot indicator 960 don't shoot
indicator 970 not clear indicator 982 absolute aiming point 990
second numerical indicator 992 bow mode indicator 994 rifle mode
indicator 996 trajectory mode indicator 1000 relative aiming point
1002 reference image 1004 reference target 1005 generic reference
1006 reference indicator 1007 a-c reference multiple 1008 separator
1010 aiming point indicators 1012 too high indicator 1014 too low
indicator 1020 enlarged target image 1022 reference measurement
1030 zoom control 1032 settings control 1034 settings 1042 sight in
indicator 1044 distance text 1046 drop text 1048 target type
indicators 1050 setup indicator 1052 antelope reference image 1054
deer reference image 1100 relative target 1102 target center 1110
a-d concentric square 1112 scale 1120 a-b relative target icon 1130
a-b shot mark T target
DESCRIPTION OF THE INVENTION
[0076] The following detailed description of the invention
references the accompanying drawings that illustrate specific
embodiments in which the invention can be practiced. The
embodiments are intended to describe aspects of the invention in
sufficient detail to enable those skilled in the art to practice
the invention. Other embodiments can be utilized and changes can be
made without departing from the scope of the present invention. The
following detailed description is, therefore, not to be taken in a
limiting sense. The scope of the present invention is defined only
by the appended claims, along with the full scope of equivalents to
which such claims are entitled.
Projectile Trajectories
[0077] FIG. 3A is a diagram illustrating a first range to a target
T and an associated projectile trajectory 2. The rangefinder device
10 is show level such and the associated projectile trajectory
leaves the firing device and enters the target at substantially the
same true elevation (horizontal line 4).
[0078] The first range preferably represents a length of an
imaginary line drawn between the device 10 and the target T, as
shown in FIG. 3A, such as the number of feet, meters, yards, miles,
etc., directly between the device 10 and the target T. Thus, the
first range may correspond to a line of sight 3 between the device
10 and the target T.
[0079] FIG. 3B is a diagram illustrating a second range and an
associated projectile trajectory 2 to the target T when the target
T is elevated, i.e. is at a positive angle. The first range is the
sensed range along the line of sight 3. The second range is the
true horizontal distance to the target T, as measured along the
horizontal line 4. A third range is the true horizontal distance,
as measured along the horizontal line 4, to the projectile
trajectory 2 intercept. Half of the third range is the x-axis
distance to the vertex V of the projectile trajectory 2. The second
range is determined by multiplying the first range by the cosine of
the angle.
[0080] FIG. 3C is a diagram illustrating a second range and an
associated projectile trajectory 2 to the target T when the target
T is at a lower elevation, i.e. is at a negative angle. The first
range is the sensed range along the line of sight 3. The second
range is the true horizontal distance to the target T, as measured
along the horizontal line 4. The third range is the true horizontal
distance, as measured along the horizontal line 4, to the
projectile trajectory 2 intercept. Half of the third range is the
x-axis distance to the vertex V of the projectile trajectory 2.
[0081] In situations where the angle is non-zero, such as when the
target T is positioned above (FIG. 3B) or below (FIG. 3C) the
device 10, the parabolic movement of the projectile affects the
range calculation, such that the projectile may have to travel a
longer or shorter distance to reach the target T. Thus, the second
range provides an accurate representation to the user of the
flat-ground distance the projectile must travel to intersect the
target T.
[0082] FIGS. 3A through 3C are shown with an exemplary projectile
trajectory 2 based on a parabola with an A value of -0.005.
Aiming Point Displays
[0083] FIG. 4 shows the active display elements when the target T
(not shown for clarity) is ranged at forty yards. The display 30
shows the cross hairs 900 (show here with a center circle) which
are placed on the target T. The display 30 dynamically shows that
the range is forty yards in the distance indicator 910. The display
30 also dynamically illuminates a twenty-yard indicator 920. The
twenty-yard indicator 920 informs the user where the projectile
will be at twenty yards distance. Because the twenty-yard indicator
920 shows an intermediate trajectory path point where the arrow
will be at twenty yards distance, the twenty-yard indicator 920 is
a twenty-yard pin aiming point 982. A bow hunter can place the
twenty-yard pin 220 of the bow sight 110 on the same visual spot
indicated, for example as shown in FIG. 4, and the arrow will hit
the target T at the cross hairs 900.
[0084] In this case the aiming point 982 is an absolute aiming
point being displayed in relation to the actual visual image of the
target T. Compare this to a relative aiming point 1000 as
discussed, for example, in relation to FIGS. 8A through 8F, where
the separate and distinct relative aiming point 1000 is displayed
in relation to a separate and distinct reference image 1002, such
as deer reference image 1054 shown in FIG. 8A or the relative
target icon 1120 shown in FIG. 8F.
[0085] In the figures the symbols used for the various indicators
are exemplary and other shapes or styles of indicators could be
used. For example, the cross hairs 900 are shown with a center
circle, but other styles such as intersecting lines, a solid center
dot, and so forth could be used. Also the distance indicator 910 is
shown having using seven segments for the digits, but other shapes
of styles could be used. Positions are also exemplary.
[0086] The examples herein generally use yards as the unit of
measure. The invention is not limited to yards, but could also be
set using feet, meters, kilometers, miles, and so forth.
[0087] In some bow embodiments the display 30 or device 10 is
calibrated such that the location of the twenty-yard indicator 920
matches the relative position of the twenty-yard pin 220 on the
individual user's bow and bow sight 110.
Rangefinder Device
[0088] FIG. 2 is a rear perspective view of an exemplary range
finding device 10, shown as a handheld laser rangefinder. FIG. 1
shows the internal components.
[0089] For instance, the user may look through the eyepiece 22,
align the target T, view the target T, and generally simultaneously
view the display 30 to determine the first range, the angle, the
clear shot indications, and/or other relevant information. The
generally simultaneous viewing of the target T and the relevant
information enables the user to quickly and easily determine ranges
and ballistic information corresponding to various targets by
moving the device 10 in an appropriate direction and dynamically
viewing the change in the relevant information on the display
30.
[0090] The portable handheld housing 20 houses the range sensor 12,
tilt sensor 14, computing element 16, and/or other desired elements
such as the display 30, one or more inputs 32, eyepiece 22, lens
24, laser emitter, laser detector, etc. The handheld housing 20
enables the device 10 be easily and safely transported and
maneuvered for convenient use in a variety of locations.
[0091] For example, the portable handheld housing 20 may be easily
transported in a backpack for use in the field. Additionally, the
location of the components on or within the housing 20, such as the
position of the eyepiece 22 on the proximate end 28 of the device
10, the position of the lens 24 on the distal end 26 of the device,
and the location of the inputs 32, enables the device 10 to be
easily and quickly operated by the user with one hand without a
great expenditure of time or effort.
[0092] As discussed in reference to FIG. 3, generally a rangefinder
device 10 generally includes a range sensor 12 for determining a
first range to a target T, a tilt sensor 14 for determining an
angle to the target T, a computing element 16 coupled with the
range sensor 12 and the tilt sensor 14 for determining ballistic
information relating to the target T based on the first range and
the determined angle, a memory 18 for storing data such as
ballistic information and a computer program to control the
functionality of the device 10, and a portable handheld housing 20
for housing the range sensor 12, the tilt sensor 14, the computing
element 16, the memory 18, and other components.
[0093] A computer program preferably controls input and operation
of the device 10. The computer program includes at least one code
segment stored in or on a computer-readable medium residing on or
accessible by the device 10 for instructing the range sensor 12,
tilt sensor 14, computing element 16, and any other related
components to operate in the manner described herein. The computer
program is preferably stored within the memory 18 and comprises an
ordered listing of executable instructions for implementing logical
functions in the device 10. However, the computer program may
comprise programs and methods for implementing functions in the
device 10 which are not an ordered listing, such as hard-wired
electronic components, programmable logic such as
field-programmable gate arrays (FPGAs), application specific
integrated circuits, conventional methods for controlling the
operation of electrical or other computing devices, etc.
[0094] Similarly, the computer program may be embodied in any
computer-readable medium for use by or in connection with an
instruction execution system, apparatus, or device, such as a
computer-based system, processor-containing system, or other system
that can fetch the instructions from the instruction execution
system, apparatus, or device, and execute the instructions.
[0095] The device 10 and computer programs described herein are
merely examples of a device and programs that may be used to
implement the present invention and may be replaced with other
devices and programs without departing from the scope of the
present invention.
[0096] The range sensor 12 may be any conventional sensor or device
for determining range. The first range may correspond to a line of
sight 3 between the device 10 and the target T. Preferably, the
range sensor 12 is a laser range sensor which determines the first
range to the target by directing a laser beam at the target T,
detecting a reflection of the laser beam, measuring the time
required for the laser beam to reach the target and return to the
range sensor 12, and calculating the first range of the target T
from the range sensor 12 based on the measured time.
[0097] The range sensor 12 may alternatively or additionally
include other range sensing components, such as conventional
optical, radio, sonar, or visual range sensing devices to determine
the first range in a substantially conventional manner.
[0098] The tilt sensor 14 is operable to determine the angle to the
target T from the device 10 relative to the horizontal. As
discussed in reference to FIGS. 3A, 3B, and 3C, the tilt sensor is
used to determine the angle of the line of sight 3. The tilt sensor
14 preferably determines the angle by sensing the orientation of
the device 10 relative to the target T and the horizontal.
[0099] The tilt sensor 14 preferably determines the angle by
sensing the orientation of the device 10 relative to the target T
and the horizontal as a user 100 of the device 10 aligns the device
10 with the target T and views the target T through an eyepiece 22
and an opposed lens 24.
[0100] For example, if the target T is above the device 10 (e.g.
FIG. 3B), the user of the device 10 would tilt the device 10 such
that a distal end 26 of the device 10 would be raised relative to a
proximate end 28 of the device 10 and the horizontal. Similarly, if
the target T is below the device 10 (e.g. FIG. 3C), the user of the
device 10 would tilt the device 10 such that the distal end 26 of
the device 10 would be lowered relative to the proximate end 28 of
the device and the horizontal.
[0101] The tilt sensor 14 preferably determines the angle of the
target to the device 10 based on the amount of tilt, that is the
amount the proximate end 28 is raised or lowered relative to the
distal end 26, as described below. The tilt sensor 14 may determine
the tilt of the device, and thus the angle, through various
orientation determining elements. For instance, the tilt sensor 14
may utilize one or more single-axis or multiple-axis magnetic tilt
sensors to detect the strength of a magnetic field around the
device 10 or tilt sensor 14 and then determine the tilt of the
device 10 and the angle accordingly. The tilt sensor 14 may
determine the tilt of the device using other or additional
conventional orientation determine elements, including mechanical,
chemical, gyroscopic, and/or electronic elements, such as a
resistive potentiometer.
[0102] Preferably, the tilt sensor 14 is an electronic
inclinometer, such as a clinometer, operable to determine both the
incline and decline of the device 10 such that the angle may be
determined based on the amount of incline or decline. Thus, as the
device 10 is aligned with the target T by the user, and the device
10 is tilted such that its proximate end 28 is higher or lower than
its distal end 26, the tilt sensor 14 will detect the amount of
tilt which is indicative of the angle.
[0103] The computing element 16 is coupled with the range sensor 12
and the tilt sensor 14 to determine ballistic information relating
to the target T, including clear shot information, as is discussed
herein. The computing element 16 may be a microprocessor,
microcontroller, or other electrical element or combination of
elements, such as a single integrated circuit housed in a single
package, multiple integrated circuits housed in single or multiple
packages, or any other combination. Similarly, the computing
element 16 may be any element that is operable to determine clear
shot information from the range and angle information as well as
other information as described herein. Thus, the computing element
16 is not limited to conventional microprocessor or microcontroller
elements and may include any element that is operable to perform
the functions described.
[0104] The memory 18 is coupled with the computing element 16 and
is operable to store the computer program and a database including
ranges, projectile drop values, and configuration information. The
memory 18 may be, for example, an electronic, magnetic, optical,
electromagnetic, infrared, or semi-conductor system, apparatus,
device, or propagation medium.
[0105] The device 10 also includes a display 30 to indicate
relevant information such as the cross hairs 900, distance
indicator 910, selectable path indicators 930, clear shot indicator
950, don't shoot indicator 960, not clear indicator 970. The
display 30 may be a conventional electronic display, such as a LED,
TFT, or LCD display. Preferably, the display 30 is viewed by
looking through the eyepiece 22 such that the user may align the
target T and simultaneously view relevant information. The
illuminated segments may be parallel to the optical path (e.g.
horizontal) between the eyepiece 22 and the opposed lens 24 and
reflect to a piece of angled glass in the optical path.
[0106] The inputs 32 are coupled with the computing element 16 to
enable users or other devices to share information with the device
10. The inputs 32 are preferably positioned on the housing 20 to
enable the user to simultaneously view the display 30 through the
eyepiece 22 and function the inputs 32.
[0107] The inputs 32 preferably comprise one or more functionable
inputs such as buttons, switches, scroll wheels, etc., a touch
screen associated with the display 30, voice recognition elements,
pointing devices such as mice, touchpads, trackballs, styluses,
combinations thereof, etc. Further, the inputs 32 may comprise
wired or wireless data transfer elements.
[0108] In operation, the user aligns the device 10 with the target
T and views the target T on the display 30. The device 10 may
provide generally conventional optical functionality, such as
magnification or other optical modification, by utilizing the lens
24 and/or the computing element 16. Preferably, the device 10
provides an increased field of vision as compared to conventional
riflescopes to facilitate conventional rangefinding functionality.
The focal magnification typically is 4.times., 5.times., 6.times.,
7.times., 12.times. and so forth. In some embodiments the
magnification factor is variable, such as with a zoom feature. This
magnification value is used by the computing element 16 in
performing the mapping of the various indicators on the optical
image.
[0109] Further, the user may function the inputs 32 to control the
operation of the device 10. For example, the user may activate the
device 10, provide configuration information as discussed below,
and/or determine a first range, a second range, angle, and
ballistic information by functioning one or more of the inputs
32.
[0110] For instance, the user may align the target T by centering
the reticle over the target T and functioning at least one of the
inputs 32 to cause the range sensor 12 to determine the first
range. Alternatively, the range sensor 12 may dynamically determine
the first range for all aligned objects such that the user is not
required to function the inputs 32 to determine the first range.
Similarly, the tilt sensor 14 may dynamically determine the angle
for all aligned objects or the tilt sensor may determine the angle
when the user functions at least one of the inputs 32. Thus, the
clear shot information discussed herein may be dynamically
displayed to the user.
[0111] In various embodiments, the device 10 enables the user to
provide configuration information. The configuration information
includes mode information to enable the user to select between
various projectile modes, such as bow hunting and firearm modes.
Further, the configuration information may include projectile
information, such as a bullet size, caliber, grain, shape, type,
etc. and firearm caliber, size, type, sight-in distance, etc.
[0112] The user may provide the configuration information to the
device 10 by functioning the inputs 32.
[0113] Further, the memory 18 may include information corresponding
to configuration information to enable the user-provided
configuration information to be stored by the memory 18.
[0114] In various embodiments, the device 10 is operable to
determine a second range to the target T and display an indication
of the second range to the user. The computing element 16
determines the second range to the target T by adjusting the first
range based upon the angle. Preferably, the computing element 16
determines the second range by multiplying the first range by the
sine or cosine of the angle. For instance, when the hunter is
positioned above the target, the first range is multiplied by the
sine of the angle to determine the second range. When the hunter is
positioned below the target, the first range is multiplied by the
cosine of the angle to determine the second range.
[0115] Thus, the second range preferably represents a horizontal
distance the projectile must travel such that the estimated
trajectory of the projectile generally intersects with the target
T.
High-Resolution Digital Display
[0116] FIG. 5 shows a high-resolution display 31 providing digital
video superimposed with a clear shot indication, such as the
twenty-yard indicator 920 and the forty-yard indicator 940. The
digital video shows the target, such as a deer and its
surroundings.
[0117] FIG. 5 also shows optional placement of various mode
indicators. For example, the bow mode indicator 992 and the
trajectory mode indicator 996 are shown in the corners of a
rectangular digital, high-resolution display 31, in this example, a
touch screen display of an Apple iPhone 11.
[0118] One advantage of a digital, high-resolution display 31 is
that it is not limited to the circular optical focus area. The
additional area of the rectangular display can be used for various
purposes. As shown in FIG. 5 the various mode indicators, including
bow mode indicator 992, rifle mode indicator 994 (not shown),
trajectory mode indicator 996, can be moved outside the circular
focus area, for example, to the lower corners. Other indicators,
such as the distance indicator 910 angle and second range indicator
990, can also be moved outside the circular focus area. This has
the advantage of allowing the circular focus area to be less
cluttered and to obscure less of the optical image information.
Further, the rectangular high-resolution display 31 can provide
more optical information.
[0119] Another advantage of a high-resolution display 31 is that
the overlay information is produced by software rather than by a
hardware chip. Custom hardware chips can be expensive to design and
manufacture and are less flexible. The overlay information
generated by software for display on the high-resolution display 31
is higher quality, such as easier to read fonts, and move flexible,
such as being able to display in different colors or locations of
the screen to avoid obscuring the optical information being
overlaid. The display can have more options, such as natural
languages, different number systems such as Chinese, different
units of measure, and so forth. Further, the software can be easily
updated to incorporate new features, to improve calculations, or to
support addition projectile information. Updates can be made in the
field as well as in new models at a lower cost. For example, in
some embodiments, new software can be downloaded over the
Internet.
[0120] Other advantages of high-resolution display 31 will be
discussed in references to FIGS. 6 and 7.
High-Resolution Touch Screen Display
[0121] FIG. 5 also shows an exemplary touch screen display as an
embodiment of the high-resolution display 31. The high-resolution
display 31 displays the video image as digitally captured by the
digital camera 25 or as simulated by the game software; the overlay
information such as the twenty-yard indicator 920 and the
forty-yard indicator 940, the cross hairs 900, the distance
indicator 910, the mode indicators (e.g. 992 and 996), and the
display inputs 34, shown as range button (34a) and fire button
(34b). The display inputs 34 are virtual buttons that are tapped on
a touch screen, or clicked on with a pointing device (or game
controller). The input 32 is a physical button. Both inputs 32 and
display inputs 34 provide input to the computing element 16 (FIG.
3).
[0122] The embodiment shown comprises a mobile smart phone, in
particular an Apple iPhone 11. Correlating FIG. 1 with FIG. 5, the
computing element 16 is the processor of the iPhone 11; the memory
18 is the memory of the iPhone 11; the tilt sensor 14 is the
accelerometer of the iPhone 11; and the display 30 is the touch
screen display of the iPhone 11, an embodiment of the
high-resolution display 31. The range sensor 12 is simulated in the
game embodiments, or as enhancement to the iPhone 11.
Digital Rangefinder Devices
[0123] FIGS. 6 and 7 are rear and front perspective views,
respectively, of a digital embodiment of rangefinder device 10.
[0124] The digital rangefinder device 10 comprise a housing 20,
having an eyepiece 22 at the proximate end 28, a lens 24 and range
sensor 12 at the distal end 26, and inputs 32 in various places on
exterior. In contrast to the conventional rangefinder, the housing
20 contains a digital camera 25 that captures and digitizes video
from the optical image through the lens 24 and contains a digital,
high-resolution display 31. The video comprises a series of image
frames. The computing element 16 (FIG. 3) processes the image
frames, overlays each frame with various indicators, and displays
the resulting image on the high-resolution display 31. Further, the
high-resolution display 31 is controlled completely by the
computing element 16 (FIG. 3) and need not display any of the
optical image being captured; instead the high-resolution display
31 may display setup menus, recorded video, or animations generated
by the computing element 16 (FIG. 3).
[0125] The eyepiece 22 may also be modified to accommodate viewing
of the high-resolution display 31. In particular the eyepiece 22
may be inset and be protected by a shroud 35.
[0126] In contrast to the conventional rangefinder housing 20, the
housing 20 of the digital rangefinder of FIGS. 6 and 7 is more
compact, more lightweight, and easier to transport and use, due to
removal of the end to end optics. For example, the length between
the proximate end 28 and the distal end 26 is shown as less than
about four inches. The width and height could be about two inches
respectively
Enhanced ClearShot Technology for Rifle and Military Markets
[0127] Various embodiments of the inventions discussed above have
been incorporated in Bushnell's The Truth with ClearShot.TM. laser
rangefinder. This product has been very successful and has been
critically acclaimed and well received by the industry, especially
for bow hunting.
[0128] However, the layout of the display, e.g. see FIG. 4, with
for example, a 4.times. focal magnification is limited to relative
slow projectiles such as arrows and black powder rifle balls (e.g.
less than 400 feet per second), which are typically shot at targets
less than 80 yards away.
[0129] Modern rifles with high-performance cartridge bullets and
other military projectiles such as tank guns can travel 10 to 20
times faster, and can be shot at targets that are hundreds or
thousands of yards away. These higher velocity projectiles have a
flatter projectile trajectory and the aiming point is closer to the
target.
[0130] What is needed for higher velocity projectiles, such as
those in the rifle hunting, law enforcement, and military
industries, is a means for showing a relative aiming point using a
reference representing an enlarged view of the target.
Relative Aiming Point
[0131] The following sections describe various enhancements to the
clear shot technology discussed above, which provide a relative
aiming point to meet the needs of users of higher velocity
projectiles.
Relative Aiming Point Relative to a Reference of a Predetermined
Height
[0132] FIGS. 8A through 8F illustrate displays showing embodiments
of a relative aiming point 1000 shown relative to a reference of a
predetermine size, the reference shown by various means such as a
reference image 1002, reference indicators 1006 lines, a generic
reference 1005, or a relative target icon 1120.
[0133] FIG. 8A illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a reference of a
predetermine size. The display 30 shows the active display elements
when a target T is ranged at four hundred yards. Note that the
target T is visually much smaller than a deer would be when ranged
at sixty yards. The display 30 shows cross hairs 900 (shown here
with a center circle) which are placed on the target T. The display
30 dynamically shows that the horizontal range is four hundred
yards in a horizontal distance indicator 914.
[0134] The target T and the target's surroundings are visually
shown at a known focal magnification (such as 4x or 6x based on the
lens 24 of the device 10). The display elements are superimposed
over, or displayed over, the visual image.
[0135] In this embodiment, the reference is shown as a reference
image 1002, for example as a generic deer with a chest height of 18
inches. The chest height is measured from the belly to the top of
the back. The reference image 1002, such as an image of a deer, can
be selected by the user in settings 1034 (discussed below in
reference to FIGS. 12A through 12I and in FIG. 15). The user can
also set the chest height for the deer, based on predetermined
sizes for typical deer, such as 14 inches, 16 inches, or 18
inches.
[0136] This embodiment also shows reference target 1004 placed in
the reference image 1002.
Operation of the Relative Aiming Point
[0137] FIG. 8A shows that the optical image of the deer, target T,
at four hundred yards is very small. The indicators as shown in the
bow mode embodiment in FIG. 4 do not have high enough precision to
be useful for a long-range target T, such as at four hundred yards.
This enhancement provides a rifle mode which can be combined with
the bow mode in the same device, or which can be implemented
independently in rangefinders used in the rifle and military
markets.
[0138] Initially, the user sets up the rangefinder device 10 by
selecting rifle mode; calibrating the device to the zero of the
rifle sight or scope, and the ballistic code of the specific
ammunition; selecting a reference type (such as the deer references
image 1002 as shown); and selecting a reference size. See
additional discussion below regarding settings in FIG. 15. See
discussion regarding FIGS. 16A through 22F regarding a currently
preferred relative target method of entering ballistic curve
information (instead of entering a ballistic code).
[0139] When the user ranges a target T, the rangefinder device 10
determines a line of sight 3 distance (e.g. the laser distance),
determines an angle (using a tilt sensor or accelerometer), and
then uses the line of sight distance and the angle to determine a
horizontal 4 distance to the target T, which is displayed in the
horizontal distance indicator 914.
[0140] Next, the device 10 determines the projectile trajectory 2.
In rifle mode the shape of the parabola is determined by the
ballistic code entered in settings 1034. The values for the
projectile trajectory is determined from the ballistic code in a
lookup table stored in the device 10, or, preferably, real
ballistic curve information is used. For example, a .270
Winchester, zeroed at 100 yards, has about a 10-inch drop at 285
yards.
[0141] After calculating the aiming point 982, in relation to the
target T, the reference image 1002 is displayed, and the relative
aiming point 1000 is displayed relative to the reference using the
predetermined reference height, for example 18 inches.
[0142] In the exemplary embodiment shown in FIG. 8A, the deer has a
predetermined chest height of 18 inches as set by the user. The
relative aiming point 1000 is determined to be about 21 inches
based on the ballistic code and the 100 yard zero settings, and
based on the horizontal distance of 400 yards determined by the
rangefinder device 10.
[0143] In the FIG. 8A embodiment, the reference image 1002 has a
fixed size and position. The relative aiming point 1000 is
displayed dynamically based on the measured horizontal distance
using the current ballistic, zero, and reference size settings. If
the horizontal distance is less than the zero setting, the relative
aiming point 1000 is displayed below the reference target 1004. If
the horizontal distance is the same as the zero setting, the
relative aiming point 1000 is the reference target 1004. If the
horizontal distance is greater that the zero setting the relative
aiming point 1000 is displayed above the reference target 1004.
Relative Aiming Point Relative to Reference Lines
[0144] FIG. 8B illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a reference indicator
1006 shown as reference lines. Like FIG. 8A, the display 30 shows
cross hairs 900 and dynamically shows the horizontal range in a
horizontal distance indicator 914.
[0145] In this embodiment, the reference is shown as the reference
indicator 1006 shown as reference lines.
[0146] This embodiment also shows reference target 1004 centered in
the reference indicator 1006.
[0147] In this embodiment, the reference indicator 1006 has a fixed
size and position. The relative aiming point 1000 is displayed
dynamically based on the measured horizontal distance using the
current ballistic, zero, and reference size settings.
Relative Aiming Point Relative to Reference Image and Reference
Multiples
[0148] FIG. 8C illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a reference image 1002
shown as a deer. Like FIG. 8A, the display 30 shows cross hairs 900
and dynamically shows the horizontal range in a horizontal distance
indicator 914.
[0149] In this embodiment, the reference is shown as the reference
image 1002 with a plurality of reference multiples 1007a-b, shown
as dashed lines. Each reference multiple 1007 is the same height as
the reference height, in this example, the same as the chest height
of the deer. Reference multiples 1007 are useful for very long
shots where the bullet drop larger than the size of the reference.
The user 100 can visualize the reference height and then pick an
aiming point that is relative to a multiple of the target's
visualized height in the scope.
[0150] This embodiment also shows reference target 1004 centered in
the reference indicator 1006.
[0151] In this embodiment, the reference image 1002 and reference
multiples 1007a-b have fixed heights and positions. The relative
aiming point 1000 is displayed dynamically based on the measured
horizontal distance using the current ballistic, zero, and
reference size settings.
Relative Aiming Point Relative to Reference Lines and Reference
Multiples
[0152] FIG. 8D illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a reference indicator
1006 shown as reference lines. Like FIG. 8A, the display 30 shows
cross hairs 900 and dynamically shows the horizontal range in a
horizontal distance indicator 914.
[0153] In this embodiment, the reference is shown as the reference
indicator 1006 shown as reference lines with a plurality of
reference multiples 1007a-c, shown as dashed lines. Each reference
multiple 1007 is the same height as the reference height. Reference
multiples 1007 are useful for very long shots where the bullet drop
larger than the size of the reference. The user 100 can visualize
the reference height and then pick an aiming point that is relative
to a multiple of the target's visualized height in the scope.
[0154] This embodiment also shows reference target 1004 centered in
the reference indicator 1006.
[0155] In this embodiment, the reference indicator 1006 and
reference multiples 1007a-c have fixed heights and positions. The
relative aiming point 1000 is displayed dynamically based on the
measured horizontal distance using the current ballistic, zero, and
reference size settings.
Relative Aiming Point Relative to Generic Reference
[0156] FIG. 8E illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a generic reference
1005 shown as generic stick figure. Like FIG. 8A, the display 30
shows cross hairs 900 and dynamically shows the horizontal range in
a horizontal distance indicator 914.
[0157] In this embodiment, the reference is shown as the generic
reference 1005. This generic reference 1005 can be used for a
variety of four legged mammals, including deer, elk, antelope,
moose, coyote, skunk, etc. The generic image can be permanently set
simplifying the settings required in this embodiment.
[0158] This embodiment also shows reference target 1004 centered in
the reference indicator 1006.
[0159] In this embodiment, the generic reference 1005 has a fixed
height and position. The relative aiming point 1000 is displayed
dynamically based on the measured horizontal distance using the
current ballistic, zero, and reference size settings.
Relative Aiming Point Relative to Relative Target Icon
[0160] FIG. 8F illustrates a display 30 showing an embodiment of a
relative aiming point 1000 shown relative to a novel relative
target icon 1120. Like FIG. 8A, the display 30 shows cross hairs
900 and dynamically shows the horizontal range in a horizontal
distance indicator 914.
[0161] In this embodiment, the novel relative target icon 1120 has
a fixed height and position. The relative aiming point 1000 is
displayed dynamically based on the measured horizontal distance
using the current ballistic, zero, and reference size settings.
[0162] The relative target icon 1120 represents a 20-inch by
20-inch relative target 1100 (see FIG. 16A) in Imperial "yard"
mode, where the target height is 20 inches. The relative target
icon 1120 represents a 50 cm by 50 cm relative target 1100 (see
FIG. 16B) in metric "meter" mode, where the target height is 50
cm.
[0163] In this embodiment, the reference is shown as the relative
target icon 1120. This relative target icon 1120 can be used for a
variety of types of target with out having to modify the target
height setting. The advantage of the novel relative target icon
1120 over the other embodiments can be understood by the following
examples.
[0164] When the distances are shown in yards, the relative target
icon 1120 corresponds to 20-inch by 20-inch relative target 1100.
As discussed below in relation to FIG. 16A, the markings on the
relative target 1100 comprise of four concentric squares 1110 (a-d)
having sides measuring 20 inches, 15 inches, 10 inches, and 5
inches, respectively. The relative target icon 1120 comprises
display segment elements that correspond to the four concentric
squares 1110 (a-d) of the relative target 1100. If the current
target T is a mule deer having a chest height of 18 inches which is
between 20 inches and 15 inches, the user would use the white band
between the outer two concentric squares 1100a and 1100b to
visualize the reference to the 18 inch mule deer chest and then
used the relative aiming point 1000 to visualize where to aim. If
an antelope, having a 15-inch chest height, comes into view, the
user would use the 15-inch concentric square 1100b to visualize the
reference to the 15-inch antelope chest and then used the relative
aiming point 1000 to visualize where to aim. If a prairie dog,
having a 10-inch body height, comes into view, the user would use
the 10-inch concentric square 1100c to visualize the reference to
the 10-inch prairie dog body and then used the relative aiming
point 1000 to visualize where to aim. If no living targets show up
for the hunt, a tin can having a height of about 5 inches, can be
visualized by using the 5 inch concentric square 1100d to visualize
the reference to the tin can and then used the relative aiming
point 1000 to visualize where to aim.
[0165] In a military example, if a terrorist, having a 20-inch
chest height, comes into view, the user, a warfighter, would use
the 20-inch concentric square 1100a to visualize the reference to
the terrorist's chest and then used the relative aiming point 1000
to visualize where to aim. If only an enemy's head, about 9 inches
high, is seen above a wall, the warfighter would use the 10 inch
concentric squares 1100c to visualize the reference to the 9 inch
head and then used the relative aiming point 1000 to visualize
where to aim.
[0166] In this example, the operation is as follows: when the user
100 presses the range input 32 button on the range finding device
10, the cross hairs 900 are selective illuminated allowing the user
aim the range sensor at the target T, the range finding device 10
uses the distance from the range sensor 12 and the angle from the
tilt sensor 14 to determine the horizontal distance to the target
which is displayed in the horizontal distance indicator 914, shown
as 346 yards. As visualized in FIG. 8F, the resolution of the
display 30 is inadequate to show an absolute aiming point 982 in
relation to the actual visualized image of the target T. Compare
this to the 40-yard example shown in FIG. 4, where the selectable
path indicators 930 of layout of FIG. 11B (or FIG. 11D) are
adequate to show an absolute aiming point 982, or the 60-yard
example shown in FIG. 5 where the digital display 31 has the
adequate resolution to show an absolute aiming point 982.
Relative Aiming Point Options
[0167] FIGS. 9A through 9C illustrate various options for showing a
relative aiming point 100 relative to a reference indicator 1006,
including an optional reference target 1004 or wind correction.
[0168] FIGS. 9A through 9C illustrate a subset of a display 30
showing embodiments of a relative aiming point 1000 shown relative
to a reference indicator 1006 shown as reference lines.
[0169] FIG. 9A shows an optional reference target 1004 centered in
the reference indicator 1006.
[0170] FIG. 9B shows that the optional reference target 1004 can be
omitted. While the reference target 1004 is currently preferred and
is generally shown in most of the figures in this section, relative
aiming point 1000 can be implemented without explicitly showing the
reference target 1004, and could be omitted from any specific
embodiment.
[0171] FIG. 9C shows the relative aiming point 1000 offset from the
reference target 1004 wherein the offset adjusts for cross wind
drift. In this specific case, the reference target 1004 is useful
to visualize the amount of cross wind drift adjustment.
Horizontal Distance and Angle Display Options
[0172] FIGS. 10A through 10C illustrates various options for
showing line of sight distance, horizontal distance, and angle.
[0173] In other display layouts, the line of sight distance
indicator 910 is displayed in larger digits while the angle and
horizontal distance is display in smaller digits. However, the most
important number for the user 100 is the horizontal distance. An
improved display layout having better user interface design will
show only the horizontal distance (see FIG. 11A) or show the
horizontal distance as the primary number (see FIGS. 10A through
10C, and FIGS. 11B through 11D).
[0174] FIG. 10A shows a portion of a display 30 where a horizontal
distance indicator 914 has the largest digits, with a distance
indicator 910 and an angle indicator 912 shown below in smaller
digits.
[0175] FIGS. 10B and 10C shows a portion of a display 30 where a
horizontal distance indicator 914 has the largest digits, with a
distance indicator 910 and an angle indicator 912 both in smaller
digits, shown above when the target T is uphill (FIG. 10B, see also
FIG. 3B) and shown below when the target T is downhill (FIG. 10C,
see also FIG. 3C). This embodiment is more intuitive and shows
graphically the horizontal distance indicator 914 next to the
horizontal line in the angle graphic, the angle indicator 912
inside the angle, and the line of sight distance indicator 910 next
to an uphill line in a first angle graphic (FIG. 10B) or next to a
downhill line in a second angle graphic (FIG. 10C). In contrast to
FIG. 10A the user does not have to recognize and interpret the plus
or minus sign in the angle indicator 912; instead it is shown
graphically for better user cognition.
Display Layouts for Relative Aiming Point
[0176] FIGS. 11A through 11D show embodiments of layout for the
display segments or display elements which are superimposed on the
visual image of the target and the target's surroundings.
[0177] FIG. 11A shows an embodiment of a layout for the display
segments. An exemplary display 30 comprises segments forming cross
hairs 900, a horizontal distance indicator 914, a reference target
1004, a reference indicator 1006, and a plurality of selectable
aiming point indicators 1010.
[0178] The cross hairs 900 are positioned centrally in the display
30. The horizontal distance indicator 914 is positioned
peripherally, shown near the left edge of the display 30. The
reference indicator 1006 is positioned peripherally in the display
30, shown near the right edge of the display 30. The aiming point
indicators 1010 are also positioned peripherally and centered on
the reference indicator 1006.
[0179] The plurality of selectable aiming point indicators 1010 are
dynamically and selectively illuminated to provide the relative
aiming point 1000.
[0180] In other embodiments, two or more reference images 1002 or a
generic reference 1005 could also be added to the layout, each as a
single segment, which is dynamically and selectively illuminated to
provide the reference based on the settings. See FIG. 11C, FIGS.
12A through 12I and FIG. 15.
[0181] FIG. 11B shows an embodiment of a more robust, hybrid layout
for the display segments. An exemplary display 30 comprises
segments forming cross hairs 900, a horizontal distance indicator
914, selectable path indicators 930, an off screen indicator 932,
angle and second range indicator 990, a reference target 1004, a
reference indicator 1006, reference multiples 1007a-c, a separator
1008, and a plurality of selectable aiming point indicators
1010.
[0182] The cross hairs 900 are positioned centrally in the display
30. The selectable path indicators 930 and off screen indicator 932
are centered on the cross hairs 900. The horizontal distance
indicator 914 and angle and second range indicator 990 are
positioned peripherally, shown near the left edge of the display
30. The reference indicator 1006 is positioned peripherally in the
display 30, shown near the right edge of the display 30. The aiming
point indicators 1010 are also positioned peripherally and centered
on the reference indicator 1006. The reference multiples 1007a-c
are also positioned relative to the reference indicator 1006.
[0183] This embodiment supports the improved layout of FIGS. 10B
and 10C.
[0184] The separator 1008 may be useful to help the user visually
distinguish, or separate, the visual image of the target and the
relative aiming point portions of the display 30.
[0185] In hybrid embodiments, the selectable path indicators 930
would illuminate when the target T was close (e.g. visually larger
than the reference height, such as 1006) and the reference target
1004, the reference indicator 1006, reference multiples 1007a-c,
the separator 1008, and one of the plurality of selectable aiming
point indicators 1010 would illuminate when the target was far. In
other words, one of the aiming point indicators 1010 is used to
display the relative aiming point 1000 when the aiming point is
close to the target (e.g. within a distance equivalent to the chest
height of a deer) and the path indicators 930 is used to display
the absolute aiming point 982 when the aiming point is far from the
target T but still visible in the display 30, or when the distance
to the target T is short.
[0186] FIG. 11C shows a currently preferred embodiment of a layout
for the display segments. An exemplary display 30 comprises
segments forming cross hairs 900, a horizontal distance indicator
914, a second numerical indicator 990, multiple reference images
1002, and a plurality of selectable aiming point indicators
1010.
[0187] The plurality of selectable aiming point indicators 1010 are
dynamically and selectively illuminated to provide the relative
aiming point 1000. When one of the aiming point indicators 1010 is
not appropriate, either a too high indicator 1012 or a too low
indicator 1014 is selectively illuminated.
[0188] The layout includes multiple reference images 1002 (shown as
antelope reference image 1052 and deer reference image 1054) and
relative target icons 1120 (a-b), each as a single segment, which
are dynamically and selectively illuminated to provide the
reference based on the settings.
[0189] The cross hairs 900 are positioned centrally in the display
30. The horizontal distance indicator 914 and second numerical
indicator 990 are positioned peripherally, shown near the left edge
of the display 30. The relative target icons 1120 (a-b) are
positioned peripherally in the display 30, shown near the right
edge of the display 30. The aiming point indicators 1010 are also
positioned peripherally and centered on the relative target icons
1120 (a-b). The antelope reference image 1052 and deer reference
image 1054 are positioned in relation to the lower relative target
icon 1120b.
[0190] The layout also includes selectively illuminated setup
indicator 1050, sight in indicator 1042, distance text 1044, drop
text 1046, and a plurality of target type indicators 1048. The
plurality of target type indicators 1048 are shown to include 20''
Target (see FIG. 12I represented FIG. 16A), 50 cm Target (see FIG.
12I represented FIG. 16B), antelope (e.g. see FIG. 12C), deer (e.g.
see FIG. 8A and FIG. 12A), and elk (see FIG. 12B). Other target
type indicators could be included, for example, such as turkey (see
FIG. 12D), prairie dog (see FIG. 12E), enemy (see FIG. 12F), tank
(see FIG. 12G), or concentric circle targets (see FIG. 12H).
[0191] FIG. 11D shows another preferred hybrid embodiment of a
display layout for use with bows, pistols, rifles, muzzleloaders,
etc. where all the elements of FIG. 11C are combined with the path
indicators 930 and off screen indicator 932 as shown in FIG. 11B.
In this embodiment, one of the aiming point indicators 1010 is used
to display the separate and distinct relative aiming point 1000
when the aiming point is close to the target T (e.g. within a
distance equivalent to the chest height of a deer) and the path
indicators 930 is used to display the separate and distinct
absolute aiming point 982 when the aiming point is far from the
target T but still visible in the display 30, or when the distance
to the target T is short.
User Selectable Reference Images and Reference Sizes
[0192] FIGS. 12A through 12I show embodiments of various reference
images 1002 with relative aiming points 1000.
[0193] FIG. 12A shows the reference image 1002 as a deer reference
image 1054. When a deer is selected the user can also select from
corresponding chest heights. Mule deer have chest heights that
average 18 inches. Whitetail deer have chest heights that average
16 inches. Deer height ranges could be between 14 and 18
inches.
[0194] FIG. 12B shows the reference image 1002 as an elk. When an
elk is selected the user can also select from corresponding chest
heights. Elk have chest heights that average 25 inches.
[0195] FIG. 12C shows the reference image 1002 as an antelope
reference image 1052. When an antelope is selected the user can
also select from corresponding chest heights. Antelope have chest
heights between 15 and 16 inches.
[0196] FIG. 12D shows the reference image 1002 as a turkey. When a
turkey is selected the user can also select from corresponding
reference body heights.
[0197] FIG. 12E shows the reference image 1002 as a prairie dog.
When a prairie dog is selected the user can also select from
corresponding chest heights.
[0198] FIG. 12F shows the reference image 1002 as a terrorist. When
a terrorist is selected the user can also select from corresponding
body heights. Terrorists, for example, could have body heights
between 4.5 and 6.5 feet.
[0199] FIG. 12G shows the reference image 1002 as a tank. When a
tank is selected the user can also select from corresponding
vehicle heights.
[0200] Other reference images could include coyote, big horn sheep
(20 inches), goats (20 inches) and moose (34 to 40 inches).
[0201] FIG. 12H shows the reference image 1002 as a printed
concentric circle target. When a concentric circle target is
selected the user can also select from corresponding target
heights. Standard concentric circle targets range from 6 inches to
36 inches.
[0202] FIG. 12I shows display 30 with the reference image 1002 as a
relative target icon 1120, which is indicated as 20'' target by the
target type indicator 1048. In this example, the relative aiming
point 1000 is shown a few inches above the relative target icon
1120 which corresponds to the aiming point at 346 yards (as shown
in the a horizontal distance indicator 914) for the specific
firearm, and the target in the cross hairs 900.
Aiming Point Relative to Enlarged Target Display
[0203] FIG. 13 illustrates a digital display 31 showing a relative
aiming point 1000 relative to an enlarged target image 1020.
[0204] FIG. 13 illustrates a digital display 31 showing an
embodiment of a relative aiming point 1000 shown relative to a
reference of a predetermine size. The digital display 31 shows
cross hairs 900 (shown here with a center circle) which are placed
on the target T. The digital display 31 dynamically shows that the
horizontal range is four hundred yards in a horizontal distance
indicator 914.
[0205] In this embodiment, the reference is shown as an enlarged
target image 1020. The enlarged target image 1020 is separate and
distinct display element from the target T. When the target T is
ranged, a digital snapshot is taken of the target T. The line of
sight distance to the target T is known and thus can be enlarged to
provide a reference of a predetermined size. The digital device 10
can optionally measure the chest height from the belly to the top
of the back, and display the chest height in reference measurement
1022.
[0206] This embodiment also shows reference target 1004 placed in
the reference image 1002.
[0207] The user 100 can range the target by tapping anywhere on a
touch screen. Alternatively the user can click a physical button on
the device or an optional virtual button on the screen such as the
range button identified as input 34a.
[0208] The operation is similar to the operation of the display as
described in reference to FIG. 8A, with the reference image 1002
being the enlarged target image 1020, and the optional calculation
of the actual reference height.
[0209] The digital display 31 also provides an input to enter set
up mode, i.e. a virtual settings control 1032 buttons. When the
input is selected the device enters setup mode (see FIG. 15).
Aiming Point Relative to Zoomed Target Display
[0210] FIGS. 14A and 14B illustrate embodiments of digital displays
31 showing relative aiming points 1000 relative to an zoomed target
image, and zoom controls 1030.
[0211] FIG. 14A illustrates a digital display 31 showing a relative
aiming point 1000 relative to an zoomed target T image.
[0212] FIG. 14A illustrates a digital display 31 showing an
embodiment of a relative aiming point 1000 shown relative to a
reference of a predetermine size. The digital display 31 shows
cross hairs 900 (shown here with a center circle) which are placed
on the target T. The digital display 31 dynamically shows that the
horizontal range is three hundred yards in a horizontal distance
indicator 914.
[0213] In this embodiment, the reference is shown as a zoomed image
of the target T. There is not separate reference.
[0214] The digital display includes a zoom control 1030 which
allows the user 100 to zoom in and zoom out, and which displays the
current zoom factor, e.g. 20.times..
[0215] The user 100 can range the target by tapping anywhere on a
touch screen (except in the zoom control). Alternatively the user
can click a physical button on the device or a virtual button on
the screen (not shown).
[0216] The operation is similar to the operation of the display as
described in reference to FIG. 8A, with the reference image 1002
being the zoomed image of target T.
[0217] The digital display 31 also provides an input to enter set
up mode, i.e. a virtual settings control 1032 buttons. When the
input is selected the device enters setup mode (see FIG. 15).
[0218] FIG. 14B shows the same embodiment as FIG. 14A where the
target T is ranged at 200 yards. Notice that the deer appears
larger at the same zoom factor because it is closer. The relative
aiming point 1000 is relative lower than in the 300 yard example of
FIG. 14A. In this example, the relative aiming point 1000 is below
the deer's back.
Settings and Calibration Related to Relative Aiming Point
Embodiments
[0219] Various settings have been discussed above.
[0220] FIG. 15 illustrates a digital embodiment of a display
showing various settings 1034.
[0221] Settings for units (i.e. yards or meters) and mode (bow or
rifle) are well known as discussed above.
[0222] In some embodiments, the device 10 can be simplified by
assuming that sight or scope is zeroed at 100 yards. In more
complex embodiments (such as the one shown), the user can calibrate
the device 10 to the sight or scope by setting a "zero at" or
"sight in" setting.
[0223] In one embodiment, the user would enter a ballistics code
that indicates the characteristics of a specific ammunition and
firing device. In rifle mode, the ballistics code is used to
determine the projectile trajectory 2. Alternatively, the user
enters the bullet drop, for example, in inches, at the "sight in"
(or "zero at") distance.
[0224] In the currently preferred embodiment, the user does not
enter a ballistic code or a bullet drop directly, but uses the
novel real calibration processes using a relative target as
described below in reference to FIG. 16A through FIG. 22F.
[0225] The reference type can also be set in settings. The
exemplary embodiment shown in FIG. 15 shows the current setting as
reference type and the choices include zoomed actual (e.g. FIGS.
14A and 14B), lines (e.g. FIG. 8B), lines with multiples (e.g. FIG.
8D), deer (e.g. FIG. 12A), elk (e.g. FIG. 12B), antelope (e.g. FIG.
12C), turkey (e.g. FIG. 12D), coyote, prairie dog (e.g. FIG. 12E),
tank (e.g. FIG. 12G), and others not visualized but accessible by
selecting the scroll arrows at the top or bottom of the list.
Alternatively in a simpler embodiment having only reference lines
or a generic reference, the reference type can be removed for the
required settings.
[0226] Once the reference type is selected, then the reference size
can also be selected from corresponding ranges of sizes (as
discussed above in relations to FIGS. 12A through 12I).
[0227] A digital display 31 provides a more robust interface as
shown in FIG. 15. However, the same settings can be made on a
display 30 such as a display with LCD segments.
Relative Target
[0228] U.S. patent application Ser. No. 14/471,786 first showed the
use of a specially printed target to calibrate a rangefinder to a
user's specific bow sight on a specific bow that was set to a
specific type of arrow.
[0229] FIG. 16A shows a novel relative target 1100 which can be
used with a method aspect of this invention to calibrate a
rangefinder device to any user's specific bow, crossbow, pistol,
rifle or other firearm with a specific type of arrow or ammunition.
The markings on the relative target 1100 comprise of four
concentric squares 1110 (a-d) having sides measuring 20 inches, 15
inches, 10 inches, and 5 inches, respectively, an "X" marking the
target center 1102, and a measuring scale 1112 indicating the
number of inches below the target center 1102.
[0230] FIG. 16B shows a metric version of the relative target 1100
of FIG. 16A. The four concentric squares 1110 (a-d) having sides
measuring 50 cm, 37.5 cm, 25 cm, and 12.5 cm, respectively. In the
metric embodiment measuring scale 1112 indicates the number of
centimeters below target center 1102.
[0231] In the preferred embodiment, the metric version, as shown in
FIG. 16B, which is slightly smaller that the Imperial inches
version, as shown in FIG. 16A, is printed on the back of the inches
version.
[0232] FIG. 16C shows an alternate version of the four concentric
squares 1110 (a-d) the relative target 1100 of FIG. 16A. The four
concentric squares 1110 (a-d) having sides measuring 20 inches, 15
inches, 10 inches, and 5 inches, respectively. This embodiment is
preferred for very long range shooting, e.g. 1000 yards. Each band
on the target is 2.5 inches wide and alternate dark (e.g. red) and
white around the dark 5-inch center square 1110d. The outer band
1110a is white so that the four corners of the target 1100 will be
seen around the scope's reticle cross hairs at distances over 500
yards.
[0233] Testing of an embodiment of this target worked well with a
6.times. riflescope where the four corners of the inner white band
1110c were visualized between the scope's heavy duplex cross hairs
at 500 yards. At 500 yards, the crosshair intersection visually
covers the 5-inch center square 1100d. With a 12.times. riflescope
at 1000 yards, the target would be visualized the same way.
[0234] The relative target 1100 with this style of four concentric
squares 1110 (a-d) would have a scale 1112 as shown in FIG.
16A.
[0235] Calibration instructions 198 could also be printed on the
lower half of the relative target 1100. The following sections will
discusses examples of how the relative target 1100 is used to
calibrate the range finding device 10.
Relative Target Preparation with a Specific Bow and Arrow
[0236] FIGS. 17A through 17D illustrate the steps of the relative
target preparation process with a bow. FIG. 17A shows a user 100
shooting an arrow 104 with a bow 102 at the relative target 1100
placed on a horizontal line of sight 3 at 20 yards. When the bow
sight 110 20-yard pin 220 is set properly, the arrow 104 will hit
the target center 1102 (not visible at this scale). The user 100
can shoot an arrow in the configuration shown in FIG. 17A to
confirm that the 20-yard pin 220 is properly set for that specific
bow 102 and that specific arrow 104. The projectile trajectory 2 is
shown as a dashed line.
[0237] The next step, as shown in FIG. 17B is to move the relative
target 1100 to 30 yards on the horizontal line of sight 3, and
shoot the arrow 104 while aiming with the 20-yard pin 220 at the
target center 1102. The arrow will follow the same projectile
trajectory 2, but with the longer distance will hit the relative
target 1100 at a lower point, in this example, with about a 4 inch
drop, where the arrow will make a first shot mark 1130a (see FIG.
17D).
[0238] The next step, as shown in FIG. 17C is to move the relative
target 1100 to 40 yards on horizontal line of sight 3, and shoot
the arrow 104 while aiming with the 20-yard pin 220 at the target
center 1102. The arrow will follow the same projectile trajectory
2, but with the even longer distance will hit the target at a lower
point, in this example, with about a 12 inch drop, where the arrow
will make a second shot mark 1130b (see FIG. 17D).
[0239] FIG. 17D illustrates the relative target 1100 showing the
first shot mark 1130a, corresponding to the 30-yard shot, and the
second shot mark 1130b, corresponding to the 40-yard shot.
Ballistic Calibration to a Specific Bow and Arrow
[0240] FIGS. 18A through 18F show the bow ballistic calibration
process used to calibrate the device 10 to a specific bow and
arrow. In these figures the display 30 corresponds to the currently
preferred display element configuration as shown in FIG. 11D.
[0241] Initially, the rangefinder device 10 is put into setup mode
and the yard or metric setting has been selected, in this example
yard (or Imperial) mode, bow mode has been selected, and the 20''
target reference icon has been selected. As shown in FIG. 18A,
setup mode is indicated by selectively illuminating the setup
indicator 1050. Bow mode is indicated by selectively illuminating
the bow mode indicator 992. The yard mode is indicated be
selectively illuminating the "Y" as the units in the horizontal
distance indicator 914. The upper relative target icon 1120a is
illuminated, and because the device 10 is in yard mode, the `20''
Target` target type indicator 1048 is illuminated.
[0242] Next, as shown in FIG. 18A, the bow sight in distance of 20
yards is displayed in the display 30. In the preferred embodiment,
the "Sight In" indicator 1042, "Distance" text 1044, and the "20 Y"
horizontal distance indicator 914 would be flashing indicating that
the bow sight in distance is currently being set. The user can
accept 20-yards or cycle through a preset sequence, such as 20, 30,
40.
[0243] Next as shown in FIG. 18B the words "Sight In" 1042
disappear and the word "Distance" 1044 continues to flash. If 20
were selected as the Sight In distance, the user can sequence
through 30, 40, 50, 60 to select the first distance mark. In this
case the user selects 30.
[0244] Next, after the 30-yard distance is selected and confirmed
as shown in FIG. 18C, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash.
[0245] At this point, the user aims the device 10 to view the
prepared relative target 1100, as shown in FIG. 17D. As shown in
FIG. 18D, the user matches the visualized image of the relative
target 1100 to the relative target icon 1120 shown in the display.
This is done by hanging the relative target 1100 at eye level and
positioning the device 10 at a distance such that the size of the
relative target icon 1120 matches the visualized size of the
relative target 1100 through the optics of the device 10. Each time
the user hits a button, the flashing aiming point indicator 1010
moves down one location. The user moves the flashing aiming point
indicator 1010 down until it visually matches the first shot mark
1130a. For each location, the corresponding drop amount is
displayed (e.g. 4.5 inches).
[0246] Next, after the 30-yard shot mark 1130a is matched and
confirmed, as shown in FIG. 18E the words the word "Distance" 1044
flashes again. If 20 was selected as the Sight In distance, and 30
was selected as the first distance mark, the user can continue to
sequence through 40, 50, 60 to select the second distance mark. In
this case, the user selects 40.
[0247] Next, after the 40-yard distance is selected and confirmed
as shown in FIG. 18F, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash.
[0248] The user moves the flashing aiming point indicator 1010 down
until it visually matches the second shot mark 1130b. At this
point, the drop amount will show 12 inches.
[0249] At this point, three sets of values have been entered during
the configuration process: 1) the sight in or zero at distance
(e.g. 20 Y), 2) the first shot mark 1130a distance and visual drop
(e.g. 30 Y and 4.5 inches), and 3) the second shot mark 1130b
distance and visual drop (e.g. 40 Y and 12 inches). These three
points are then used with the starting coordinate of (0,0) to
determine a real projectile trajectory 2 which would be generally
parabolic and adjusted for the real characteristics of the specific
bow 102, specific arrow 104, the archer 100, and the environmental
conditions such as altitude, humidity, air density, and their
impact on the arrow's trajectory. This real calibration is superior
to selection of a ballistic curve from a finite set of
predetermined curves.
Relative Target Preparation with a Specific Rifle and
Ammunition
[0250] FIGS. 19A through 19D illustrate the steps of the relative
target preparation process with a specific rifle and specific
ammunition. FIG. 19A shows a user 100 shooting a rifle 300 at the
relative target 1100 placed on a horizontal line of sight 3 at 200
yards. When the riflescope is zeroed at, or sighted in at, 200
yards, the bullet will hit the target center 1102 (not visible at
this scale). The user 100 can shoot a bullet in the configuration
shown in FIG. 19A to confirm that the rifle scope is properly
sighted in or zeroed for that specific rifle 300 and that specific
ammunition. The projectile trajectory 2 is shown as a dashed
line.
[0251] The next step, as shown in FIG. 19B is to move the relative
target 1100 to 300 yards on the horizontal line of sight 3, and
shoot the rifle 300 while aiming with the riflescope at the target
center 1102. The bullet will follow the same projectile trajectory
2, but with the longer distance will hit the relative target 1100
at a lower point, in this example, with about an 8 inch drop, where
the bullet will make a first shot mark 1130a (see FIG. 19D).
[0252] The next step, as shown in FIG. 19C is to move the relative
target 1100 to 400 yards on horizontal line of sight 3, and shoot
the rifle 300 while aiming with the riflescope at the target center
1102. The bullet will follow the same projectile trajectory 2, but
with the even longer distance will hit the target at a lower point,
in this example, with about a 19 inch drop, where the bullet will
make a second shot mark 1130b (see FIG. 19D).
[0253] FIG. 19D illustrates the relative target 1100 showing the
first shot mark 1130a, corresponding to the 300-yard shot, and the
second shot mark 1130b, corresponding to the 400-yard shot.
Ballistic Calibration to a Specific Rifle and Ammunition
[0254] FIGS. 20A through 20F show the rifle ballistic calibration
process used to calibrate the device 10 to a specific rifle and
specific ammunition. In these figures the display 30 corresponds to
the currently preferred display element configurations as shown in
FIG. 11C or FIG. 11D.
[0255] Initially, the rangefinder device 10 is put into setup mode
and the yard or metric setting has been selected, in this example
yard (or Imperial) mode, rifle mode has been selected, and the 20''
target reference icon has been selected. As shown in FIG. 20A,
setup mode is indicated by selectively illuminating the setup
indicator 1050. The yard mode is indicated be selectively
illuminating the "Y" as the units in the horizontal distance
indicator 914. The upper relative target icon 1120a is illuminated,
and because the device 10 is in yard mode, the `20'' Target` target
type indicator 1048 is illuminated.
[0256] Next, as shown in FIG. 20A, the sight in distance of 100
yards is displayed in the display 30. In the preferred embodiment,
the "Sight In" indicator 1042, "Distance" text 1044, and the "50 Y"
horizontal distance indicator 914 would be flashing indicating that
the sight in distance is currently being set. The user can accept
50-yards or cycle through a preset sequence, such as 100, 150, 200,
250. The user selects 200 yards sight in distance.
[0257] Next as shown in FIG. 20B the words "Sight In" 1042
disappear and the word "Distance" 1044 continues to flash. If 200
were selected as the Sight In distance, the user can sequence
through 100, 150, 250, 300, 350, 400 to select the first distance
mark. In this case the user selects 300.
[0258] Next, after the 300-yard distance is selected and confirmed
as shown in FIG. 20C, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash. In this example, because the current distance is 300 yards,
which is greater than the sight in distance of 200 yards, the one
of the plurality of aiming point indicators 1010 that corresponds
to the target center 102 will be flashing.
[0259] At this point, the user aims the device 10 to view the
prepared relative target 1100, as shown in FIG. 19D. As shown in
FIG. 20D, the user matches the visualized image of the relative
target 1100 to the relative target icon 1120 shown in the display.
This is done by hanging the relative target 1100 at eye level and
positioning the device 10 at a distance such that the size of the
relative target icon 1120 matches the visualized size of the
relative target 1100 through the optics of the device 10. Each time
the user hits a button, the flashing aiming point indicator 1010
moves down one location. The user moves the flashing aiming point
indicator 1010 down until it visually matches the first shot mark
1130a. For each location, the corresponding drop amount is
displayed (e.g. 7.5 inches). Note that in this embodiment the
distance between the plurality of aiming point indicators 1010
corresponds to 2.5 inches, so 7.5 is the closest increment to 8
inches.
[0260] Note that in other embodiments, the plurality of aiming
point indicators 1010 could be configured to correspond to 1-inch
increments or 0.5 inch increments. In yet another embodiment, once
the mark is visually marked to the closest increment, a fine tuning
mode could be entered where each time the button is pressed the
drop amount is changed by 0.5 inches.
[0261] Next, after the 300-yard shot mark 1130a is matched and
confirmed, as shown in FIG. 20E the words the word "Distance" 1044
flashes again. If 200 was selected as the Sight In distance, and
300 was selected as the first distance mark, the user can continue
to sequence through 350, 400 to select the second distance mark. In
this case, the user selects 400.
[0262] Next, after the 400-yard distance is selected and confirmed
as shown in FIG. 20F, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash.
[0263] The user moves the flashing aiming point indicator 1010 down
until it visually matches the second shot mark 1130b. At this
point, the drop amount will show 20 inches (which is the closest
2.5 increment to 19 inches).
[0264] At this point, three sets of values have been entered during
the configuration process: 1) the sight in or zero at distance
(e.g. 200 Y), 2) the first shot mark 1130a distance and visual drop
(e.g. 300 Y and 7.5 inches), and 3) the second shot mark 1130b
distance and visual drop (e.g. 400 Y and 20 inches). These three
points are then used with the starting coordinate of (0,0) to
determine a real projectile trajectory 2 which would be generally
parabolic and adjusted for the real characteristics of the specific
rifle 300, specific ammunition, the user 100, and the environmental
conditions such as altitude, humidity, air density, and their
impact on the bullet's trajectory. This real calibration is
superior to selection of a ballistic curve from a finite set of
predetermined curves.
Alternative Relative Target Preparation
[0265] FIGS. 21A through 21D illustrate the steps of the relative
target preparation process with a specific rifle and specific
ammunition, where the user does not have a long shooting range or
wants to calibrate using a shorter shot distance. FIG. 21A shows a
user 100 shooting a rifle 300 at the relative target 1100 placed on
a horizontal line of sight 3 at 200 yards. When the riflescope is
zeroed at, or sighted in at, 200 yards, the bullet will hit the
target center 1102 (not visible at this scale). The user 100 can
shoot a bullet in the configuration shown in FIG. 21A to confirm
that the rifle scope is properly sighted in or zeroed for that
specific rifle 300 and that specific ammunition. The projectile
trajectory 2 is shown as a dashed line. Up until this point, the
process is the same as shown in FIG. 19A; however, the next step
will be different.
[0266] The next step, as shown in FIG. 21B is to move the relative
target 1100 to 100 yards on the horizontal line of sight 3, and
shoot the rifle 300 while aiming with the riflescope at the target
center 1102. Unlike FIG. 19B, this is a distance shorter than the
sight in distance of 200 yards. The bullet will follow the same
projectile trajectory 2, but with the shorter distance will hit the
relative target 1100 at a higher point, in this example, with about
an negative -2.5 inch drop, where the bullet will make a first shot
mark 1130a (see FIG. 21D).
[0267] The next step, as shown in FIG. 21C is to move the relative
target 1100 to 300 yards on horizontal line of sight 3, and shoot
the rifle 300 while aiming with the riflescope at the target center
1102. The bullet will follow the same projectile trajectory 2, but
with the longer distance will hit the target at a lower point, in
this example, with about an 8 inch drop, where the bullet will make
a second shot mark 1130b (see FIG. 21D).
[0268] FIG. 21D illustrates the relative target 1100 showing the
first shot mark 1130a, corresponding to the 100-yard shot, and the
second shot mark 1130b, corresponding to the 300-yard shot.
Alternate Ballistic Calibration
[0269] FIGS. 22A through 22F show the rifle ballistic calibration
process used to calibrate the device 10 to a specific rifle and
specific ammunition where the relative target has been prepared
with at first shot mark 1130a which is was shot at a distance less
than the sight in distance. In these figures the display 30
corresponds to the currently preferred display element
configurations as shown in FIG. 11C or FIG. 11D.
[0270] Initially, the rangefinder device 10 is put into setup mode
and the yard or metric setting has been selected, in this example
yard (or Imperial) mode, rifle mode has been selected, and the 20''
target reference icon has been selected. As shown in FIG. 22A,
setup mode is indicated by selectively illuminating the setup
indicator 1050. The yard mode is indicated be selectively
illuminating the "Y" as the units in the horizontal distance
indicator 914. The upper relative target icon 1120a is illuminated,
and because the device 10 is in yard mode, the `20'' Target` target
type indicator 1048 is illuminated.
[0271] Next, as shown in FIG. 22A, the sight in distance of 100
yards is displayed in the display 30. In the preferred embodiment,
the "Sight In" indicator 1042, "Distance" text 1044, and the "50 Y"
horizontal distance indicator 914 would be flashing indicating that
the sight in distance is currently being set. The user can accept
50-yards or cycle through a preset sequence, such as 100, 150, 200,
250. The user selects 200 yards sight in distance. Up to this
point, the setup process is the same as with FIG. 20A.
[0272] Next as shown in FIG. 22B the words "Sight In" 1042
disappear and the word "Distance" 1044 continues to flash. If 200
were selected as the Sight In distance, the user can sequence
through 100, 150, 250, 300, 350, 400 to select the first distance
mark. In this case the user selects 100.
[0273] Next, after the 100-yard distance is selected and confirmed
as shown in FIG. 22C, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash. In this example, because the current distance is 100 yards,
which is less than the sight in distance of 200 yards, the highest
one of the plurality of aiming point indicators 1010 will be
flashing. As shown here the highest of aiming point indicators 1010
corresponds to a negative -10.0 in. drop.
[0274] At this point, the user aims the device 10 to view the
prepared relative target 1100, as shown in FIG. 21D. As shown in
FIG. 22D, the user matches the visualized image of the relative
target 1100 to the relative target icon 1120 shown in the display.
This is done by hanging the relative target 1100 at eye level and
positioning the device 10 at a distance such that the size of the
relative target icon 1120 matches the visualized size of the
relative target 1100 through the optics of the device 10. Each time
the user hits a button, the flashing aiming point indicator 1010
moves down one location. The user moves the flashing aiming point
indicator 1010 down until it visually matches the first shot mark
1130a. For each location, the corresponding drop amount is
displayed (e.g. -2.5 inches).
[0275] Next, after the 100-yard shot mark 1130a is matched and
confirmed, as shown in FIG. 22E the words the word "Distance" 1044
flashes again. If 200 was selected as the Sight In distance, and
100 was selected as the first distance mark, the user can continue
to sequence through 150, 300, 350, 400 to select the second
distance mark. In this case, the user selects 300.
[0276] Next, after the 300-yard distance is selected and confirmed
as shown in FIG. 22F, "Distance" 1044 stops flashing, and one of
the aiming point indicators 1010 and the word "Drop" start to
flash.
[0277] The user moves the flashing aiming point indicator 1010 down
until it visually matches the second shot mark 1130b. At this
point, the drop amount will show 7.5 inches (which is the closest
2.5 increment to 8 inches).
[0278] At this point, three sets of values have been entered during
the configuration process: 1) the sight in or zero at distance
(e.g. 200 Y), 2) the first shot mark 1130a distance and visual drop
(e.g. 100 Y and -2.5 inches), and 3) the second shot mark 1130b
distance and visual drop (e.g. 300 Y and 7.5 inches). These three
points are then used with the starting coordinate of (0,0) to
determine a real projectile trajectory 2 which would be generally
parabolic and adjusted for the real characteristics of the specific
rifle 300, specific ammunition, the user 100, and the environmental
conditions such as altitude, humidity, air density, and their
impact on the bullet's trajectory. This real calibration is
superior to selection of a ballistic curve from a finite set of
predetermined curves.
Display Interface Guidelines
[0279] The use of display 30 during the setup process examples
illustrated in FIGS. 18A-18F, FIGS. 20A-20F, and FIGS. 22A-22F,
respectively illustrate some guidelines for implementing the setup
process. Only the relevant display elements are illuminated at any
point in time. Display elements related to the data currently being
set flash. For example, when the sight in distance is being set,
the words "Sight In" 1042 and "Distance" 1044 flash. When the first
or second shot distance is being set, the word "Sight In" 1042 is
not illuminated, and only the word "Distance" 1044 flashes. When
the aiming point indicator 1010 is being matched to the first or
second shot mark 1130 (a or b), the selected aiming point indicator
1010 and the word "Drop" 1046 flash. The user is given a number of
options that are appropriate for the current context. For example,
in bow mode the ranges for sight in distance may start at 20 yards,
and in rifle mode the ranges for sight in distance will be longer
and start at 50 or 100 yards. After the user has some preliminary
values, then the subsequent values options should start at a
reasonable point in the sequence. However, the user should be able
to cycle through the entire sequence and start over again.
[0280] In hybrid embodiments that support multiple modes the user
could calibrate for a specific bow and arrow in bow mode setup and
then calibrate for one or more specific firearm and ammunition
pairs in rifle or other firearm modes. Once calibrated for multiple
real ballistic curves, the user would easily be able to select one
of the real ballistic curves and corresponding mode.
Operation after Calibration
[0281] As discussed in the previous sections, our novel relative
target and relative target icon can be used a universal calibration
method for any range finding device 10. After the range finding
device 10 has been calibrated to one or more real ballistic curves,
then the operation of the preferred embodiment is as described in
relation to FIG. 8F and FIG. 16A.
[0282] During calibration the upper relative target icon 1120a of
the layout of FIG. 11C (or FIG. 11D) is used. However during the
normal operation the lower relative target icon 1120b of the layout
of FIG. 11C (or FIG. 11D) is used. Having the two relative target
icons 1120 (a-b) allows for the plurality of aiming point indicator
1010s to be used for the dual purposes of calibration and for
normal operation, thus reducing the total number of display
elements required to implement the display 30.
Other Alternatives
[0283] In the foregoing examples, the user is able to specify the
sight in distance. The setup steps could be simplified by have a
default sight in distances, for example, the bow sight could
default to 20 yards, and the rifle sight in distance could default
to 100 yards for lower end range finding devices and 200 yards for
higher end range finding devices. The design choice would simplify
setup but reduce user control and flexibility.
[0284] In the foregoing examples, two shot distances and two shot
marks were used to calibrate the range finding device. The
ballistic curve may be slightly improved with a third or forth set
of distances and drop coordinates; however, these would increase
the complexity of the calibration method. For lower end rangefinder
a single shot distance could be used. In some embodiments the user
could choose to enter zero or more distances and drop coordinates.
If zero were entered, a default standard curve would be used. If
one or more coordinates were entered the additional data would be
used to approximate the best estimated of the ballistic curve based
on the amount of data entered.
Advantages
Faster
[0285] The clear shot technology and relative aiming point
technology provides the user with visual indications that do not
require mathematical calculations or adjustments. The user
immediate sees and image in the rangefinder device, which is then
replicated with the scope or sight on the firing device. In other
words, the user stays "right brained" allowing for rapid and
accurate action.
Accurate
[0286] The clear shot technology provides an accurate projective
trajectory to a ranged target that takes into account the obstacles
that may be in the trajectory.
[0287] The relative aiming point technology provides an accurate
aiming point relative to the target size reference.
Effective
[0288] Because the clear shot technology provides an accurate
projective trajectory to a ranged target that takes into account
the obstacles that may be in the trajectory, the user can adjust
the position of the shot to ensure that an unexpected obstacle will
not interfere with the shot. Thus, the first shot will always reach
its target being more effective.
[0289] The relative aiming point technology provides an accurate
aiming point that can the user can intuitively match.
Confidence
[0290] The clear shot technology gives the user confidence that
despite numerous obstacles that may be near a projectile trajectory
that a difficult shot can be successfully taken.
[0291] The relative aiming point technology gives the user
confidence that the target will be hit.
[0292] This increased confidence will improve the user's
performance and satisfaction.
Adjustable
[0293] The embodiments of these displays and rangefinders can be
adjusted to be consistent with an individual user and associated
sights, for example the specific pins on a individual user's bow
sight, and specific ammunition and scopes.
Lightweight
[0294] The enhanced features of the clear shot technology do not
add weight to the convention device. Embodiments with a digital
camera and a high-resolution display have lighter weight than
conventional rangefinders.
Easy to Transport and Use
[0295] Devices containing the clear shot and relative aiming point
technology are easy to transport and use. Embodiments with a
digital camera and a high-resolution display are smaller.
Fun
[0296] Games containing displays simulating the clear shot and
relative aiming point technology are fun to play and help introduce
a new generation of potential sportsman to the archery and shoot
sports.
CONCLUSION, RAMIFICATION, AND SCOPE
[0297] Although the invention has been described with reference to
the preferred embodiments illustrated in the attached drawings, it
is noted that equivalents may be employed and substitutions made
herein without departing from the scope of the invention as recited
in the claims.
[0298] Accordingly, the reader will see that the enhanced displays,
rangefinders, and methods provide important information regarding
the projectile trajectory and importantly provide greater accuracy,
effectiveness, and safety.
[0299] While the above descriptions contain several specifics these
should not be construed as limitations on the scope of the
invention, but rather as examples of some of the preferred
embodiments thereof. Many other variations are possible. For
example, the display can be manufactured in different ways and/or
in different shapes to increase precision, reduce material, or
simplify manufacturing. Further, this technology could be applied
to military situations where the projectiles is fired from a
cannon, tank, ship, or aircraft and where the obstacles could be
moving objects such as helicopters or warfighters. On the
battlefield with three dimensional information, e.g. from satellite
imaging and computer maps and charts, a computer using clear shot
technology could aim an fire multiple weapons over mountains and
through obstacles to continuously hit multiple targets. The
variations could be used without departing from the scope and
spirit of the novel features of the present invention.
[0300] Accordingly, the scope of the invention should be determined
not by the illustrated embodiments, but by the appended claims and
their legal equivalents.
* * * * *
References