# US 12,111,450 B2 · Camera lens assembly

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- Number: US 12,111,450 B2
- Document ID: US12111450B2
- Status: Granted
- Kind: B2
- Application number: 17/555,900
- Filed: 2021-12-20
- Published: 2022-07-28
- Granted: 2024-10-08
- Earliest claimed: 2021-01-25
- Assignees: Zhejiang Sunny Optics Co., Ltd.
- Applicants: Zhejiang Sunny Optics Co., Ltd.
- Inventors: Jianke Wenren; Fujian Dai; Liefeng Zhao
- Web page: https://patentgrep.com/patent/US12111450B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/64: having more than six components
- G02B 13/06: Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces}
- G02B 13/16: for use in conjunction with image converters or intensifiers {, or for use with projectors, e.g. objectives for projection TV}
- G02B 27/0025: {for optical correction, e.g. distorsion, aberration}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure provides a camera lens assembly, which includes, sequentially from an object side to an image side along an optical axis, a first lens having a refractive power with a convex object-side surface; a second lens having a refractive power with a convex object-side surface; a third lens having a positive refractive power; a fourth lens having a negative refractive power and a concave object-side surface; a fifth lens having a refractive power; and a sixth lens having a refractive power. A half of a maximal field-of-view Semi-FOV of the camera lens assembly satisfies: Semi-FOV≥70°. A half of a diagonal length ImgH of an effective pixel area on the imaging plane of the camera lens assembly satisfies: ImgH≥7.8 mm.

## Claims

### Claim 1

A camera lens assembly, sequentially from an object side to an image side along an optical axis, comprising:
a first lens having a negative refractive power and a convex object-side surface;
a second lens having a positive refractive power;
a third lens;
a fourth lens having a positive refractive power;
a fifth lens having a negative refractive power;
a sixth lens having a positive refractive power; and
a seventh lens,
wherein an axial distance TTL from the object-side surface of the first lens to an imaging plane of the camera lens assembly and a maximal field-of-view FOV of the camera lens assembly satisfy: 7.0 mm<TTL/Tan(FOV/3)<8.0 mm; and
an effective focal length f3 of the third lens and a total effective focal length f of the camera lens assembly satisfy: −2.0<f3/f<−1.0.

### 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 effective focal length f4 of the fourth lens satisfy: 1≤f/f4<1.5.

### Claim 3 (depends on 1)

The camera lens assembly according to claim 1, wherein an effective focal length f6 of the sixth lens and an effective focal length f4 of the fourth lens satisfy: 1.5<f6/f4<2.5.

### Claim 4 (depends on 1)

The camera lens assembly according to claim 1, wherein the effective focal length f3 of the third lens and an effective focal length f1 of the first lens satisfy: 1.0<f3/f1<1.5.

### Claim 5 (depends on 1)

The camera lens assembly according to claim 1, wherein the total effective focal length f of the camera lens assembly and a spaced interval T67 between the sixth lens and the seventh lens on the optical axis satisfy: 0.9<f/T67<1.2.

### Claim 6 (depends on 1)

The camera lens assembly according to claim 1, wherein an axial center thickness CT6 of the sixth lens and an axial center thickness CT4 of the fourth lens satisfy: 1.0<CT6/CT4<1.5.

### Claim 7 (depends on 1)

The camera lens assembly according to claim 1, wherein a radius of curvature R11 of an object-side surface of the sixth lens, a radius of curvature R12 of an image-side surface of the sixth lens and an axial center thickness CT6 of the sixth lens satisfy: 1<(R11+R12)/CT6<1.5.

### Claim 8 (depends on 1)

The camera lens assembly according to claim 1, wherein an effective focal length f5 of the fifth lens, a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: −4.0<f5/(R9-R10)<−3.0.

### Claim 9 (depends on 1)

The camera lens assembly according to claim 1, wherein an effective focal length f2 of the second lens, a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R2 of an image-side surface of the first lens satisfy: 2.0<f2/(R3−R2)<3.0.

### Claim 10 (depends on 1)

The camera lens assembly according to claim 1, wherein the total effective focal length f of the camera lens assembly, a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R2 of an image-side surface of the first lens satisfy: 0.5≤f/(R1−R2)<1.1.

### Claim 11 (depends on 1)

The camera lens assembly according to claim 1, wherein a radius of curvature R5 of an object-side surface of the third lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: −1.5<R5/R6<−0.5.

### Claim 12 (depends on 1)

The camera lens assembly according to claim 1, wherein the total effective focal length f of the camera lens assembly and a radius of curvature R8 of an image-side surface of the fourth lens satisfy: −2.0<f/R8≤−1.5.

### Claim 13 (depends on 1)

The camera lens assembly according to claim 1, wherein the camera lens assembly further comprises a stop, and an axial distance Tsi from the stop to the imaging plane of the camera lens assembly and a half of a diagonal length ImgH of an effective pixel area on the imaging plane satisfy: 1.5<Tsi/ImgH<3.0.

### Claim 14

A camera lens assembly, sequentially from an object side to an image side along an optical axis, comprising:
a first lens having a negative refractive power and a convex object-side surface;
a second lens having a positive refractive power;
a third lens;
a fourth lens having a positive refractive power;
a fifth lens having a negative refractive power;
a sixth lens having a positive refractive power; and
a seventh lens,
wherein an axial distance TTL from the object-side surface of the first lens to an imaging plane of the camera lens assembly and a maximal field-of-view FOV of the camera lens assembly satisfy: 7.0 mm<TTL/Tan(FOV/3)<8.0 mm; and
an effective focal length f2 of the second lens, a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R2 of an image-side surface of the first lens satisfy: 2.0<f2/(R3−R2)<3.0.