# US 11,029,501 B2 · Camera lens assembly

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- Number: US 11,029,501 B2
- Document ID: US11029501B2
- Status: Granted
- Kind: B2
- Application number: 16/273,584
- Filed: 2019-02-12
- Published: 2019-06-06
- Granted: 2021-06-08
- Earliest claimed: 2017-10-25
- Assignees: Zhejiang Sunny Optical Co., Ltd
- Applicants: Zhejiang Sunny Optical Co., Ltd
- Inventors: Xue Gao; Ming Li; Jianke Wenren
- Web page: https://patentgrep.com/patent/US11029501B2

## CPC

- G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)}
- G02B 9/64: having more than six components
- G02B 13/0045: {having five or more lenses}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure discloses a camera lens assembly. The camera lens assembly includes, sequentially along an optical axis from an object side to an image side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a refractive power; a fourth lens having a refractive power; a fifth lens having a refractive power; a sixth lens having a refractive power, where an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a convex surface; and a seventh lens having a negative refractive power, where an object-side surface of the seventh lens is a convex surface. An effective focal length f2 of the second lens and a total effective focal length f of the camera lens assembly satisfy: −3≤f2/f<−1.5.

## Claims

### Claim 1

A camera lens assembly comprising, sequentially along an optical axis from an object side to an image side,
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a refractive power;
a fourth lens having a refractive power;
a fifth lens having a refractive power;
a sixth lens having a refractive power, wherein an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a convex surface; and
a seventh lens having a negative refractive power, wherein an object-side surface of the seventh lens is a convex surface,
wherein an effective focal length f2 of the second lens and a total effective focal length f of the camera lens assembly satisfy: −3≤f2/f<−1.5, and
wherein an effective focal length f7 of the seventh lens and a center thickness CT7 of the seventh lens on the optical axis satisfy: −5<f7/CT7<−4.

### Claim 2 (depends on 1)

The camera lens assembly according to claim 1, wherein the total effective focal length f of the camera lens assembly and an entrance pupil diameter EPD of the camera lens assembly satisfy: f/EPD<2.0.

### Claim 3 (depends on 1)

The camera lens assembly according to claim 1, wherein the total effective focal length f of the camera lens assembly, an effective focal length f1 of the first lens, and the effective focal length f2 of the second lens satisfy: 1|<f/f1|+|f/f2|<1.55.

### Claim 4 (depends on 1)

The camera lens assembly according to claim 1, wherein a radius R2 of curvature of an image-side surface of the first lens and an effective focal length f1 of the first lens satisfy: 1.3<R2/f1<2.

### Claim 5 (depends on 1)

The camera lens assembly according to claim 1, wherein the sixth lens has a positive refractive power, and
an effective focal length f6 of the sixth lens and a total track length TTL of the camera lens assembly satisfy: 0.6<f6/TTL<1.3.

### Claim 6 (depends on 1)

The camera lens assembly according to claim 1, wherein an object-side surface of the first lens is a convex surface, and
the total effective focal length f of the camera lens assembly and a radius R1 of curvature of the object-side surface of the first lens satisfy: 2<f/R1<2.6,
wherein a radius R1 of curvature of an object-side surface of the first lens and a radius R14 of curvature of an image-side surface of the seventh lens satisfy: 1<R1/R14<1.5,
wherein an effective semi-diameter DT11 of an object-side surface of the first lens and an effective semi-diameter DT51 of an object-side surface of the fifth lens satisfy: 0.8<DT11/DT51<1.2.

### Claim 7 (depends on 1)

The camera lens assembly according to claim 1, wherein a distance SAG71 on the optical axis from an intersection point between the object-side surface of the seventh lens and the optical axis to a vertex of an effective semi-diameter of the object-side surface of the seventh lens, and a center thickness CT7 of the seventh lens on the optical axis satisfy: −0.5<SAG71/CT7<0.

### Claim 8 (depends on 1)

The camera lens assembly according to claim 1, wherein the total track length TTL of the camera lens assembly and a half ImgH of a diagonal length of an effective pixel area on an image plane of the camera lens assembly satisfy: TTL/ImgH<1.65.

### Claim 9 (depends on 8)

The camera lens assembly according to claim 8, wherein a center thickness CT3 of the third lens on the optical axis and a center thickness CT4 of the fourth lens on the optical axis satisfy: 1<CT3/CT4<1.5.

### Claim 10 (depends on 8)

The camera lens assembly according to claim 8, wherein a center thickness CT4 of the fourth lens on the optical axis and a center thickness CT5 of the fifth lens on the optical axis satisfy: CT4/CT5≤1.

### Claim 11 (depends on 8)

The camera lens assembly according to claim 8, wherein a spacing distance T56 on the optical axis between the fifth lens and the sixth lens and a spacing distance T67 on the optical axis between the sixth lens and the seventh lens satisfy: 1.5<T56/T67<3.2.

### Claim 12

A camera lens assembly comprising, sequentially along an optical axis from an object side to an image side,
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a refractive power;
a fourth lens having a refractive power;
a fifth lens having a refractive power;
a sixth lens having a refractive power, wherein an object-side surface of the sixth lens is a convex surface, and an image-side surface of the sixth lens is a convex surface; and
a seventh lens having a negative refractive power, wherein an object-side surface of the seventh lens is a convex surface,
wherein a total effective focal length f of the camera lens assembly, an effective focal length f1 of the first lens, and an effective focal length f2 of the second lens satisfy: 1<|f/f1|+|f2|<1.55.

### Claim 13 (depends on 12)

The camera lens assembly according to claim 12, wherein a radius R1 of curvature of an object-side surface of the first lens and a radius R14 of curvature of an image-side surface of the seventh lens satisfy: 1<R1/R14<1.5.

### Claim 14 (depends on 13)

The camera lens assembly according to claim 13, wherein an object-side surface of the first lens is a convex surface, and
the total effective focal length f of the camera lens assembly and a radius R1 of curvature of the object-side surface of the first lens satisfy: 2<f/R1<2.6,
wherein the total effective focal length f of the camera lens assembly and an entrance pupil diameter EPD of the camera lens assembly satisfy: f/EPD<2.0,
wherein the effective focal length f2 of the second lens and the total effective focal length f of the camera lens assembly satisfy: −3≤f2/f<−1.5,
wherein an effective focal length f6 of the sixth lens and a total track length TTL of the camera lens assembly satisfy: 0.6<f6/TTL<1.3,
wherein an effective semi-diameter DT11 of the object-side surface of the first lens and an effective semi-diameter DT51 of an object-side surface of the fifth lens satisfy: 0.8<DT11/DT51<1.2.

### Claim 15 (depends on 14)

The camera lens assembly according to claim 14, wherein an effective focal length f7 of the seventh lens and a center thickness CT7 of the seventh lens on the optical axis satisfy: −5<f7/CT7<−4.

### Claim 16 (depends on 15)

The camera lens assembly according to claim 15, wherein a distance SAG71 on the optical axis from an intersection point between the object-side surface of the seventh lens and the optical axis to a vertex of an effective semi-diameter of the object-side surface of the seventh lens, and the center thickness CT7 of the seventh lens on the optical axis satisfy: −0.5<SAG71/CT7<0.

### Claim 17 (depends on 12)

The camera lens assembly according to claim 12, wherein a radius R2 of curvature of an image-side surface of the first lens and the effective focal length f1 of the first lens satisfy: 1.3<R2/f1<2.

### Claim 18 (depends on 12)

The camera lens assembly according to claim 12, wherein a spacing distance T56 on the optical axis between the fifth lens and the sixth lens and a spacing distance T67 on the optical axis between the sixth lens and the seventh lens satisfy: 1.5<T56/T67<3.2.

### Claim 19 (depends on 12)

The camera lens assembly according to claim 12, wherein a total track length of the camera lens assembly and a half ImgH of a diagonal length of an effective pixel area on an image plane of the camera lens assembly satisfy: TTL/ImgH<1.65.