# US 12,181,639 B2 · Optical imaging lens assembly

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- Number: US 12,181,639 B2
- Document ID: US12181639B2
- Status: Granted
- Kind: B2
- Application number: 17/521,895
- Filed: 2021-11-09
- Published: 2022-05-12
- Granted: 2024-12-31
- Earliest claimed: 2020-11-11
- Assignees: Zhejiang Sunny Optics Co., Ltd.
- Applicants: Zhejiang Sunny Optics Co., Ltd.
- Inventors: Jian Wang; Lingbo He; Fujian Dai; Liefeng Zhao
- Web page: https://patentgrep.com/patent/US12181639B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/60: having five components only
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The disclosure provides an optical imaging lens assembly, which sequentially includes, from an object side to an image side along an optical axis: a first lens with a negative refractive power, an object-side surface thereof is a concave surface, an image-side surface thereof is a convex surface; a second lens with a refractive power; a diaphragm; a third lens with a refractive power, an object-side surface thereof is a convex surface, an image-side surface thereof is a convex surface; a fourth lens with a refractive power; and a fifth lens with a refractive power. Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV meets Semi-FOV≥55°.

## Claims

### Claim 1

An optical imaging lens assembly, sequentially comprising, from an object side to an image side along an optical axis:
a first lens with a negative refractive power, an object-side surface thereof is a concave surface, an image-side surface thereof is a convex surface;
a second lens with a refractive power;
a diaphragm;
a third lens with a refractive power, an object-side surface thereof is a convex surface, an image-side surface thereof is a convex surface;
a fourth lens with a refractive power; and
a fifth lens with a refractive power,
wherein Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV meets Semi-FOV≥55°; and
SAG11 is a distance from an intersection point of the object-side surface of the first lens and the optical axis to an effective radius vertex of the object-side surface of the first lens on the optical axis, SAG42 is a distance from an intersection point of an image-side surface of the fourth lens and the optical axis to an effective radius vertex of the image-side surface of the fourth lens on the optical axis, and SAG11 and SAG42 meet −2.5<SAG42/SAG11<−1.0.

### Claim 2 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens meet −4.0<f1/f<−2.0.

### Claim 3 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens meet −2.5<(f3+f4)/f5<−2.0.

### Claim 4 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an edge thickness ET1 of the first lens and a center thickness CT1 of the first lens on the optical axis meet 1.0<ET1/CT1<1.5.

### Claim 5 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an edge thickness ET4 of the fourth lens and a center thickness CT4 of the fourth lens on the optical axis meet 2.5<CT4/ET4<3.5.

### Claim 6 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein SAG32 is a distance from an intersection point of the image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens on the optical axis, and DT31 is a maximum effective radius of the object-side surface of the third lens, DT31 and SAG32 meet −3.5<DT31/SAG32<−2.5.

### Claim 7 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R8 of the image-side surface of the fourth lens and a curvature radius R10 of an image-side surface of the fifth lens meet −2.0<R8/R10<−0.8.

### Claim 8 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R5 of the object-side surface of the third lens and a curvature radius R6 of the image-side surface of the third lens meet −19.5<R5/R6<−4.5.

### Claim 9 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a center thickness CT2 of the second lens on the optical axis and a center thickness CT3 of the third lens on the optical axis meet 1.0<CT3/CT2<2.5.

### Claim 10 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R1 of the object-side surface of the first lens and a curvature radius R2 of the image-side surface of the first lens meet 1.5<R2/R1<4.5.

### Claim 11 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a spacing distance of the third lens and the fourth lens on the optical axis is longer than that of any two adjacent lenses in the first lens to the fifth lens on the optical axis.

### Claim 12 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a spacing distance of the fourth lens and the fifth lens on the optical axis is shorter than that of any two adjacent lenses in the first lens to the fifth lens on the optical axis.

### Claim 13 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, and ImgH and a total effective focal length f of the optical imaging lens assembly meet 1.0<ImgH/f<1.5.

### Claim 14 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein SL is a distance from the diaphragm to an imaging surface of the optical imaging lens assembly on the optical axis, TTL is a distance from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis, and SL and TTL meet 1.0<TTL/SL<1.5.

### Claim 15

An optical imaging lens assembly, sequentially comprising, from an object side to an image side along an optical axis:
a first lens with a negative refractive power, an object-side surface thereof is a concave surface, an image-side surface thereof is a convex surface;
a second lens with a refractive power;
a diaphragm;
a third lens with a refractive power, an object-side surface thereof is a convex surface, an image-side surface thereof is a convex surface;
a fourth lens with a refractive power; and
a fifth lens with a refractive power,
wherein Semi-FOV is a half of a maximum field of view of the optical imaging lens assembly, and Semi-FOV meets Semi-FOV≥55°; and
an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and an effective focal length f5 of the fifth lens meet −2.5<(f3+f4)/f5<−2.0.

### Claim 16 (depends on 15)

The optical imaging lens assembly according to claim 15, wherein a total effective focal length f of the optical imaging lens assembly and an effective focal length f1 of the first lens meet −4.0<f1/f<−2.0.

### Claim 17 (depends on 15)

The optical imaging lens assembly according to claim 15, wherein an edge thickness ET1 of the first lens and a center thickness CT1 of the first lens on the optical axis meet 1.0<ET1/CT1<1.5.

### Claim 18 (depends on 15)

The optical imaging lens assembly according to claim 15, wherein an edge thickness ET4 of the fourth lens and a center thickness CT4 of the fourth lens on the optical axis meet 2.5<CT4/ET4<3.5.

### Claim 19 (depends on 15)

The optical imaging lens assembly according to claim 15, wherein SAG32 is a distance from an intersection point of the image-side surface of the third lens and the optical axis to an effective radius vertex of the image-side surface of the third lens on the optical axis, and DT31 is a maximum effective radius of an object-side surface of the third lens, DT31 and SAG32 meet −3.5<DT31/SAG32<−2.5.

### Claim 20 (depends on 15)

The optical imaging lens assembly according to claim 15, wherein a curvature radius R8 of an image-side surface of the fourth lens and a curvature radius R10 of an image-side surface of the fifth lens meet −2.0<R8/R10<−0.8.