# US 11,029,494 B2 · Optical imaging lens assembly

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

- Number: US 11,029,494 B2
- Document ID: US11029494B2
- Status: Granted
- Kind: B2
- Application number: 16/212,377
- Filed: 2018-12-06
- Published: 2019-04-11
- Granted: 2021-06-08
- Earliest claimed: 2017-07-25
- Assignees: Zhejiang Sunny Optical Co., Ltd
- Applicants: Zhejiang Sunny Optical Co., Ltd
- Inventors: Bo Song
- Web page: https://patentgrep.com/patent/US11029494B2

## CPC

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

## Abstract

The present disclosure discloses an optical imaging lens assembly. The optical imaging lens assembly includes, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has a positive refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface. The second lens has a positive refractive power or a negative refractive power. The third lens has a negative refractive power. The fourth lens has a positive refractive power. The fifth lens has a negative refractive power, and an image-side surface of the fifth lens is a convex surface. A total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy: f/EPD≤1.9.

## Claims

### Claim 1

An optical imaging lens assembly comprising, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens and a fifth lens,
wherein the first lens has a positive refractive power, an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface;
the second lens has a positive refractive power or a negative refractive power;
the third lens has a negative refractive power;
the fourth lens has a positive refractive power;
the fifth lens has a negative refractive power, and an image-side surface of the fifth lens is a convex surface; and
a total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy: f/EPD≤1.9,
wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f2 of the second lens satisfy: f/|f2|≤0.1.

### Claim 2 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a combined refractive power of the first lens and the second lens is a positive refractive power, and a combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens assembly satisfy: 0.8<f/f12<1.2.

### Claim 3 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f4 of the fourth lens satisfy: 1.3≤f/f4≤1.6.

### Claim 4 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f5 of the fifth lens satisfy: −1.8≤f/f5≤−1.5.

### Claim 5 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a radius of curvature R2 of the image-side surface of the first lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: |R2/R6|≤0.1.

### Claim 6 (depends on 5)

The optical imaging lens assembly according to claim 5, wherein the radius of curvature R6 of the image-side surface of the third lens and a radius of curvature R7 of an object-side surface of the fourth lens satisfy: 0≤R6/R7<10.

### Claim 7 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a center thickness CT3 of the third lens on the optical axis and a radius of curvature R5 of an object-side surface of the third lens satisfy: CT3/|R5|<0.1.

### Claim 8 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein the total effective focal length f of the optical imaging lens assembly and a center thickness CT4 of the fourth lens on the optical axis satisfy: 6<f/CT4<9.

### Claim 9 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein, TTL/ImgH<1.6,
TTL is a distance from a center of the object-side surface of the first lens to an image plane of the optical imaging lens assembly on the optical axis; and
ImgH is half of a diagonal length of an effective pixel area on the image plane of the optical imaging lens assembly.

### Claim 10

An optical imaging lens assembly comprising, sequentially from an object side to an image side along an optical axis, a first lens, a second lens, a third lens, a fourth lens and a fifth lens,
wherein at least one of the first lens and the fourth lens has a positive refractive power;
at least one of the third lens and the fifth lens has a negative refractive power;
the second lens has a positive refractive power or a negative refractive power, and an effective focal length f2 of the second lens and a total effective focal length f of the optical imaging lens assembly satisfy: f/|f2|≤0.1; and
a combined refractive power of the first lens and the second lens is a positive refractive power, and a combined focal length f12 of the first lens and the second lens and the total effective focal length f of the optical imaging lens assembly satisfy: 0.8<f/f12<1.2.

### Claim 11 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein an object-side surface of the first lens is a convex surface, and an image-side surface of the first lens is a concave surface.

### Claim 12 (depends on 11)

The optical imaging lens assembly according to claim 11, wherein a radius of curvature R2 of the image-side surface of the first lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: |R2/R6|≤0.1.

### Claim 13 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein an image-side surface of the fifth lens is a convex surface.

### Claim 14 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein each of the first lens and the fourth lens has a positive refractive power.

### Claim 15 (depends on 14)

The optical imaging lens assembly according to claim 14, wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f4 of the fourth lens satisfy: 1.3≤f/f4≤1.6.

### Claim 16 (depends on 14)

The optical imaging lens assembly according to claim 14, wherein the total effective focal length f of the optical imaging lens assembly and a center thickness CT4 of the fourth lens on the optical axis satisfy: 6<f/CT4<9.

### Claim 17 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein each of the third lens and the fifth lens has a negative refractive power.

### Claim 18 (depends on 17)

The optical imaging lens assembly according to claim 17, wherein the total effective focal length f of the optical imaging lens assembly and an effective focal length f5 of the fifth lens satisfy: −1.8≤f/f5≤−1.5.

### Claim 19 (depends on 17)

The optical imaging lens assembly according to claim 17, wherein a center thickness CT3 of the third lens on the optical axis and a radius of curvature R5 of an object-side surface of the third lens satisfy: CT3/|R5|≤0.1.

### Claim 20 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein a radius of curvature R6 of an image-side surface of the third lens and a radius of curvature R7 of an object-side surface of the fourth lens satisfy: 0≤R6/R7<10.

### Claim 21 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein, TTL/ImgH<1.6,
TTL is a distance from a center of an object-side surface of the first lens to an image plane of the optical imaging lens assembly on the optical axis; and
ImgH is half of a diagonal length of an effective pixel area on the image plane of the optical imaging lens assembly.

### Claim 22 (depends on 21)

The optical imaging lens assembly according to claim 21, wherein the total effective focal length f of the optical imaging lens assembly and an entrance pupil diameter EPD of the optical imaging lens assembly satisfy: f/EPD≤1.9.