# US 12,216,336 B2 · Optical imaging lens assembly

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- Number: US 12,216,336 B2
- Document ID: US12216336B2
- Status: Granted
- Kind: B2
- Application number: 17/583,144
- Filed: 2022-01-24
- Published: 2022-08-04
- Granted: 2025-02-04
- Earliest claimed: 2021-02-04
- Assignees: Zhejiang Sunny Optics Co., Ltd.
- Applicants: Zhejiang Sunny Optics Co., Ltd.
- Inventors: Yeping Sun; Yang Li; Fujian Dai; Liefeng Zhao
- Web page: https://patentgrep.com/patent/US12216336B2

## CPC

- G02B 9/64: having more than six components
- G02B 13/0045: {having five or more lenses}
- 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, a second lens with a refractive power, a third lens with a refractive power, a fourth lens with a positive refractive power, a fifth lens with a refractive power, a sixth lens with a refractive power, a seventh lens with a positive refractive power, an eighth lens with a negative refractive power, and a ninth lens with a negative refractive power. ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, ImgH and a total effective focal length f of the optical imaging lens assembly meet 1.2<ImgH/f<2.2. There is a spacing distance between any two adjacent lenses in the first lens to the ninth lens.

## 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,
a second lens with a refractive power,
a third lens with a refractive power,
a fourth lens with a positive refractive power,
a fifth lens with a refractive power,
a sixth lens with a refractive power,
a seventh lens with a positive refractive power,
an eighth lens with a negative refractive power, and
a ninth lens with a negative refractive power,
wherein ImgH is a half of a diagonal length of an effective pixel region on an imaging surface of the optical imaging lens assembly, ImgH and a total effective focal length f of the optical imaging lens assembly meet 1.2<ImgH/f<2.2; and
there is a spacing distance between any two adjacent lenses in the first lens to the ninth lens;
a combined focal length f56 of the fifth lens and the sixth lens, a combined focal length f12 of the first lens and the second lens and a combined focal length f89 of the eighth lens and the ninth lens meet 0.8<f56/(f12+f89)<2.9.

### Claim 2 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an effective focal length fl of the first lens and an effective focal length f9 of the ninth lens meet 2.2<f1/f9<2.7.

### 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 f7 of the seventh lens meet 1.2<f3/(f4+f7)<2.1.

### Claim 4 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R2 of an image-side surface of the first lens, a curvature radius R3 of an object-side surface of the second lens and a curvature radius R4 of an image-side surface of the second lens meet 1.0<R2/(R3+R4)<1.5.

### Claim 5 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R11 of an object-side surface of the sixth lens and a curvature radius R12 of an image-side surface of the sixth lens meet 0.7<R11/R12<2.7.

### Claim 6 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R17 of an object-side surface of the ninth lens, a curvature radius R18 of an image-side surface of the ninth lens, a curvature radius R13 of an object-side surface of the seventh lens and a curvature radius R14 of an image-side surface of the seventh lens meet 3.0< (R17-R18)/(R13+R14)<6.0.

### Claim 7 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a curvature radius R15 of an object-side surface of the eighth lens and a curvature radius R16 of an image-side surface of the eighth lens meet 1.0<R15/R16<1.5.

### Claim 8 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a spacing distance T78 of the seventh lens and the eighth lens on the optical axis, a spacing distance T89 of the eighth lens and the ninth lens on the optical axis and a spacing distance T23 of the second lens and the third lens on the optical axis meet 1.0< (T78+T89)/T23<1.5.

### Claim 9 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an effective radius DT11 of an object-side surface of the first lens, an effective radius DT31 of an object-side surface of the third lens and an effective radius DT32 of an image-side surface of the third lens meet 1.2<DT11/(DT31+DT32)<1.7.

### Claim 10 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an effective radius DT92 of an image-side surface of the ninth lens, an effective radius DT31 of an object-side surface of the third lens and an effective radius DT32 of an image-side surface of the third lens meet 1.8<DT92/(DT31+DT32)<2.3.

### Claim 11 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a combined focal length f34 of the third lens and the fourth lens, 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 meet 3.5<f34/(CT3+CT4)<4.5.

### Claim 12 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein a center thickness CT7 of the seventh lens on the optical axis and an edge thickness ET7 of the seventh lens meet 3.3<CT7/ET7<4.4.

### Claim 13 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein an edge thickness ET4 of the fourth lens, an edge thickness ET8 of the eighth lens and an edge thickness ET9 of the ninth lens meet 1.0< (ET4+ET8)/ET9<1.5.

### Claim 14 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein at least three of the first lens to the ninth lens are plastic lenses.

### Claim 15 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein TTL is a distance from an object-side surface of the first lens to an imaging surface of the optical imaging lens assembly on the optical axis, and TTL meet TTL<10 mm.

### Claim 16

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,
a second lens with a refractive power,
a third lens with a refractive power,
a fourth lens with a positive refractive power,
a fifth lens with a refractive power,
a sixth lens with a refractive power,
a seventh lens with a positive refractive power,
an eighth lens with a negative refractive power, and
a ninth lens with a negative refractive power,
wherein an effective focal length f3 of the third lens, an effective focal length f4 of the fourth lens and an effective focal length f7 of the seventh lens meet 1.2<f3/(f4+f7)<2.1; and
there is a spacing distance between any two adjacent lenses in the first lens to the ninth lens;
a combined focal length f56 of the fifth lens and the sixth lens, a combined focal length f12 of the first lens and the second lens and a combined focal length f89 of the eighth lens and the ninth lens meet 0.8<f56/(f12+f89)<2.9.

### Claim 17 (depends on 16)

The optical imaging lens assembly according to claim 16, wherein an effective focal length fl of the first lens and an effective focal length f9 of the ninth lens meet 2.2<f1/f9<2.7.

### Claim 18 (depends on 16)

The optical imaging lens assembly according to claim 16, wherein a curvature radius R2 of an image-side surface of the first lens, a curvature radius R3 of an object-side surface of the second lens and a curvature radius R4 of an image-side surface of the second lens meet 1.0<R2/(R3+R4)<1.5.

### Claim 19 (depends on 16)

The optical imaging lens assembly according to claim 16, wherein a curvature radius R11 of an object-side surface of the sixth lens and a curvature radius R12 of an image-side surface of the sixth lens meet 0.7<R11/R12<2.7.