# US 12,007,533 B2 · Optical imaging lens assembly including seven lenses of +−++−+−, ++−+−+−, +−−+−+−, +−+−++− or +−++++− refractive powers

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- Number: US 12,007,533 B2
- Document ID: US12007533B2
- Status: Granted
- Kind: B2
- Application number: 17/038,552
- Filed: 2020-09-30
- Published: 2021-05-06
- Granted: 2024-06-11
- Earliest claimed: 2019-11-05
- Assignees: Zhejiang Sunny Optical Co., Ltd
- Applicants: Zhejiang Sunny Optical Co., Ltd
- Inventors: Haidong Xiao; Kaiyuan Zhang; Fujian Dai; Liefeng Zhao
- Web page: https://patentgrep.com/patent/US12007533B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/64: having more than six components
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure discloses an optical imaging lens assembly including a first lens having positive refractive power with a convex object-side surface and a concave image-side surface; a second lens having refractive power; a third lens having refractive power with a concave image-side surface; a fourth lens having positive refractive power; a fifth lens having refractive power with a convex object-side surface and a concave image-side surface; a sixth lens having positive refractive power with a convex object-side surface and a convex image-side surface; and a seventh lens having negative refractive power with a concave object-side surface and a concave image-side surface. A distance TTL along the optical axis from the object-side surface of the first lens to an imaging plane, half a diagonal length ImgH of an effective pixel area on the imaging plane and a total effective focal length f satisfy: 5.00 mm<TTL/ImgH*f<6.00 mm.

## Claims

### Claim 1

An optical imaging lens assembly, sequentially from an object side to an image side of the optical imaging lens assembly along an optical axis, comprising:
a first lens having positive refractive power with a convex object-side surface and a concave image-side surface;
a second lens having refractive power;
a third lens having refractive power with a concave image-side surface;
a fourth lens having positive refractive power;
a fifth lens having negative refractive power in the paraxial region, with a convex object-side surface and a concave image-side surface;
a sixth lens having positive refractive power with a convex object-side surface and a convex image-side surface; and
a seventh lens having negative refractive power with a concave object-side surface and a concave image-side surface,
wherein TTL/ImgH<1.30; and
5.00 mm<TTL/ImgH*f<6.00 mm,
where TTL is a distance along the optical axis from the object-side surface of the first lens to an imaging plane of the optical imaging lens assembly, ImgH is half of a diagonal length of an effective pixel area on the imaging plane of the optical imaging lens assembly, and f is a total effective focal length of the optical imaging lens assembly,
wherein the optical imaging lens assembly further satisfies:
5.00<(R13−R14)/(R13+R14)<8.00, or
2.00<T67/T56<5.00, or
2.00<(CT6+CT7)/(CT6−CT7)<4.00,
where R13 is a radius of curvature of the object-side surface of the seventh lens, R14 is a radius of curvature of the image-side surface of the seventh lens, T67 is a spaced interval between the sixth lens and the seventh lens along the optical axis, T56 is a spaced interval between the fifth lens and the sixth lens along the optical axis, CT6 is a center thickness of the sixth lens along the optical axis, and CT7 is a center thickness of the seventh lens along the optical axis.

### Claim 2 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.20<TTL/ImgH<1.30.

### Claim 3 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 0.50<f1/f6<1.50,
where f1 is an effective focal length of the first lens, and f6 is an effective focal length of the sixth lens.

### Claim 4 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 7.00<f56/BFL<12.00,
where f56 is a combined focal length of the fifth lens and the sixth lens, and BFL is a distance along the optical axis from an image-side surface of a lens closest to the imaging plane to the imaging plane.

### Claim 5 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 0.50<R2/f<2.00,
where R2 is a radius of curvature of the image-side surface of the first lens, and f is the total effective focal length of the optical imaging lens assembly.

### Claim 6 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 0.50<SAG51/SAG52<1.50,
where SAG51 is an on-axis distance from an intersection of the object-side surface of the fifth lens and the optical axis to a vertex of an effective radius of the object-side surface of the fifth lens, and SAG52 is an on-axis distance from an intersection of the image-side surface of the fifth lens and the optical axis to a vertex of an effective radius of the image-side surface of the fifth lens.

### Claim 7 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 2.00<DT72/DT11<3.00,
where DT72 is a maximum effective radius of the image-side surface of the seventh lens, and DT11 is a maximum effective radius of the object-side surface of the first lens.

### Claim 8 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein ImgH>4.10 mm,
where ImgH is half of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens assembly.

### Claim 9 (depends on 1)

The optical imaging lens assembly according to claim 1, further comprising a stop disposed at the object-side surface of the first lens.

### Claim 10 (depends on 1)

The optical imaging lens assembly according to claim 1,
wherein 17.00 mm2<ImgH*f/tan2(Semi-FOV)<21.00 mm2,
where Semi-FOV is half of a maximal field-of-view of the optical imaging lens assembly.

### Claim 11 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein 0.50<f1/f6<1.50,
where f1 is an effective focal length of the first lens, and f6 is an effective focal length of the sixth lens.

### Claim 12 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein 7.00<f56/BFL<12.00,
where f56 is a combined focal length of the fifth lens and the sixth lens, and BFL is a distance along the optical axis from an image-side surface of a lens closest to the imaging plane to the imaging plane.

### Claim 13 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein 0.50<R2/f<2.00,
where R2 is a radius of curvature of the image-side surface of the first lens, and f is the total effective focal length of the optical imaging lens assembly.

### Claim 14 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 5.00 mm<TTL/ImgH*f<5.59 mm.