# US 10,502,935 B2 · Image sensor modules and luminaires incorporating the same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,502,935 B2
- Document ID: US10502935B2
- Status: Granted
- Kind: B2
- Application number: 15/449,126
- Filed: 2017-03-03
- Published: 2018-09-06
- Granted: 2019-12-10
- Earliest claimed: 2017-03-03
- Assignees: IDEAL Industries Lighting LLC
- Applicants: IDEAL Industries Lighting LLC
- Inventors: Jin Hong Lim; John Roberts; Steve Wilcenski
- Web page: https://patentgrep.com/patent/US10502935B2

## CPC

- G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)}
- G02B 3/06: with cylindrical or toric faces
- G02B 13/08: Anamorphotic objectives
- G03B 15/03: Combinations of cameras with lighting apparatus; Flash units
- H04N 23/56: provided with illuminating means
- G03B 2215/0592: installed in front of light emitter
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Asymmetrical lenses are provided having design to mitigate or eliminate field of view mismatch between image sensor modules and luminaires incorporating the image sensor modules. Briefly, an asymmetrical lens comprises an optical axis and a front surface comprising a first set of normal axes (x, y) in a plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x, y). The asymmetrical lens also comprises a back surface comprising a second set of normal axes (x′, y′) in the plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x′, y′), wherein the asymmetrical lens has negative refractive power or positive refractive power in each of an x-axis and y-axis of an image plane of the asymmetrical lens.

## Claims

### Claim 1

An asymmetrical lens of an image sensor module comprising:
an optical axis;
a front surface comprising a first set of normal axes (x, y) in a plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x, y); and
a back surface comprising a second set of normal axes (x′,y′) in the plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x′,y′),
wherein the asymmetrical lens has positive refractive power in the x-axis and negative refractive power in the y-axis of the image plane of the asymmetrical lens,
wherein refractive power in the x-axis and the y-axis of the image plane differ, and
wherein the front surface comprises a negative radius of curvature normal to a positive radius of curvature along the first set of normal axes (x, y) and the back surface comprise a negative radius of curvature normal to a positive radius of curvature along the second set of normal axes (x′, y′).

### Claim 2 (depends on 1)

The asymmetrical lens of claim 1, wherein the front surface comprises negative radius of curvature along each of the first set of normal axes (x, y) and the back surfaces comprises negative radius of curvature along each of the second set of normal axes (x′,y′).

### Claim 3 (depends on 2)

The asymmetrical lens of claim 2, wherein negative radius of curvature differs between the normal axes (x, y) of the first set.

### Claim 4 (depends on 3)

The asymmetrical lens of claim 3, wherein negative radius of curvature differs between the normal axes (x′, y′) of the second set.

### Claim 5 (depends on 1)

The asymmetrical lens of claim 1 comprising a lens center thickness of 0.007<d1/L<0.2, where d1 is center thickness of the asymmetric lens and L is total track length of the asymmetrical lens and a primary lens assembly of the image sensor module.

### Claim 6 (depends on 1)

The asymmetrical lens of claim 1, wherein the front surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 7 (depends on 6)

The asymmetrical lens of claim 6, wherein the conic constants each have a value from −1 to 1.

### Claim 8 (depends on 1)

The asymmetrical lens of claim 1, wherein the back surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 9 (depends on 8)

The asymmetrical lens of claim 8, wherein the conic constants each have a value from −1 to 1.

### Claim 10

An asymmetrical lens of an image sensor module comprising:
an optical axis;
a front surface comprising a first set of normal axes (x, y) in a plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x, y); and
a back surface comprising a second set of normal axes (x′,y′) in the plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x′,y′),
wherein the asymmetrical lens has negative refractive power in both the x-axis and y-axis of the image plane of the asymmetrical lens, and
wherein negative refractive power range in both the x-axis and y-axis of the image plane are −300<fx/F<−8, −100<fy/F<−5, wherein fx and fy are the focal length of the asymmetric lens in the x-axis and y-axis of the image plane, respectively, and F is focal length of the primary lens assembly of the image sensor module.

### Claim 11 (depends on 10)

The asymmetrical lens of claim 10, wherein the primary lens assembly comprises two or more rotationally symmetric lenses.

### Claim 12 (depends on 10)

The asymmetrical lens of claim 10, wherein the front surface comprises negative radius of curvature along each of the first set of normal axes (x, y) and the back surfaces comprises negative radius of curvature along each of the second set of normal axes (x′,y′).

### Claim 13 (depends on 12)

The asymmetrical lens of claim 12, wherein negative radius of curvature differs between the normal axes (x, y) of the first set.

### Claim 14 (depends on 13)

The asymmetrical lens of claim 13, wherein negative radius of curvature differs between the normal axes (x′, y′) of the second set.

### Claim 15 (depends on 10)

The asymmetrical lens of claim 10 comprising a lens center thickness of 0.007<d1/L<0.2, where d1 is center thickness of the asymmetric lens and L is total track length of the asymmetrical lens and a primary lens assembly of the image sensor module.

### Claim 16 (depends on 10)

The asymmetrical lens of claim 10, wherein the front surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 17 (depends on 16)

The asymmetrical lens of claim 16, wherein the conic constants each have a value from −1 to 1.

### Claim 18 (depends on 10)

The asymmetrical lens of claim 10, wherein the back surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 19 (depends on 18)

The asymmetrical lens of claim 18, wherein the conic constants each have a value from −1 to 1.

### Claim 20

An asymmetrical lens of an image sensor module comprising:
an optical axis;
a front surface comprising a first set of normal axes (x, y) in a plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x, y); and
a back surface comprising a second set of normal axes (x′,y′) in the plane normal to the optical axis and a negative radius of curvature or positive radius of curvature along each of the normal axes (x′,y′),
wherein the asymmetrical lens has positive refractive power in the x-axis and negative refractive power in the y-axis of the image plane of the asymmetrical lens,
wherein refractive power in the x-axis and the y-axis of the image plane differ,
wherein positive refractive power range in the x-axis of the image plane is 10<fx/F<5000 and negative refractive power range in the y-axis of the image plane is −100<fy/F<−5, where fx and fy are the focal length of the asymmetric lens in the x-axis and y-axis of the image plane, respectively, and F is the focal length of a primary lens assembly of the image sensor module.

### Claim 21 (depends on 20)

The asymmetrical lens of claim 20, wherein the front surface comprises negative radius of curvature along each of the first set of normal axes (x, y) and the back surfaces comprises negative radius of curvature along each of the second set of normal axes (x′,y′).

### Claim 22 (depends on 21)

The asymmetrical lens of claim 21, wherein negative radius of curvature differs between the normal axes (x, y) of the first set.

### Claim 23 (depends on 22)

The asymmetrical lens of claim 22, wherein negative radius of curvature differs between the normal axes (x′, y′) of the second set.

### Claim 24 (depends on 20)

The asymmetrical lens of claim 20 comprising a lens center thickness of 0.007<d1/L<0.2, where d1 is center thickness of the asymmetric lens and L is total track length of the asymmetrical lens and a primary lens assembly of the image sensor module.

### Claim 25 (depends on 20)

The asymmetrical lens of claim 20, wherein the front surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 26 (depends on 25)

The asymmetrical lens of claim 25, wherein the conic constants each have a value from −1 to 1.

### Claim 27 (depends on 20)

The asymmetrical lens of claim 20, wherein the back surface of the asymmetrical lens comprises conic constants differing in normal orientations.

### Claim 28 (depends on 27)

The asymmetrical lens of claim 27, wherein the conic constants each have a value from −1 to 1.