# US 12,372,750 B2 · Optical imaging lens assembly

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- Number: US 12,372,750 B2
- Document ID: US12372750B2
- Status: Granted
- Kind: B2
- Application number: 17/164,948
- Filed: 2021-02-02
- Published: 2021-10-28
- Granted: 2025-07-29
- Earliest claimed: 2020-04-27
- Assignees: Zhejiang Sunny Optics Co., Ltd.
- Applicants: Zhejiang Sunny Optics Co., Ltd.
- Inventors: Long Li; Jianke Wenren; Fujian Dai; Liefeng Zhao
- Web page: https://patentgrep.com/patent/US12372750B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 5/04: Prisms
- G02B 9/60: having five components only
- G02B 13/0065: {having a beam-folding prism or mirror}
- G02B 13/02: Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
- G02B 13/06: Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces}
- G02B 13/18: with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration {(G02B13/002 takes precedence)}
- G02B 27/0025: {for optical correction, e.g. distorsion, aberration}
- G02B 15/145511: {arranged -+-+-}
- G02B 15/145515: {arranged -+++-}
- G03B 17/17: with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having negative refractive power; a prism having an incident surface, a reflecting surface, and an exit surface, and an angle between the reflecting surface and the optical axis being 45°; a stop; a second lens having positive refractive power; a third lens having refractive power; a fourth lens having positive refractive power; and a fifth lens having negative refractive power.

## 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 negative refractive power;
a prism having an incident surface, a reflecting surface, and an exit surface, wherein an angle between the reflecting surface and the optical axis is 45°;
a stop;
a second lens having positive refractive power;
a third lens having refractive power;
a fourth lens having positive refractive power; and
a fifth lens having negative refractive power,
wherein −5.50<f1/f<−1.50, where f1 is an effective focal length of the first lens, and f is a total effective focal length of the optical imaging lens assembly,
wherein 4.00<(DT51+DT52)/(DT52−DT51)<11.00, where DT51 is a maximum effective radius of an object-side surface of the fifth lens, and DT52 is a maximum effective radius of an image-side surface of the fifth lens, and
wherein a distance on the axis between the incident surface and the reflecting surface of the prism is greater than or equal to 1.41 mm, the distance on the axis between the incident surface and the reflecting surface of the prism being equal to a distance on the axis between the reflecting surface and the exit surface of the prism, and a number of lenses having refractive powers included in the optical imaging lens assembly is five.

### Claim 2 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein FOV>92.0°,
where FOV is a maximum field-of-view of the optical imaging lens assembly.

### Claim 3 (depends on 2)

The optical imaging lens assembly according to claim 2, wherein 92°<FOV<110.0°.

### Claim 4 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein the distance on the axis between the incident surface and the reflecting surface of the prism is further less than 1.7988 mm.

### Claim 5 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.50<f4/R10<4.00,
where f4 is an effective focal length of the fourth lens, and R10 is a radius of curvature of an image-side surface of the fifth lens.

### Claim 6 (depends on 5)

The optical imaging lens assembly according to claim 5, wherein 1.60<f4/R10<3.60.

### Claim 7 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.00<(R1+R8)/(R1−R8)<2.50,
where R1 is a radius of curvature of an object-side surface of the first lens, and R8 is a radius of curvature of an image-side surface of the fourth lens.

### Claim 8 (depends on 7)

The optical imaging lens assembly according to claim 7, wherein 1.40<(R1+R8)/(R1−R8)<2.20.

### Claim 9 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.00<R5/R6<2.00,
where R5 is a radius of curvature of an object-side surface of the third lens, and R6 is a radius of curvature of an image-side surface of the third lens.

### Claim 10 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.50<CT2/CT3<4.50,
where CT2 is a center thickness of the second lens along the optical axis, and CT3 is a center thickness of the third lens along the optical axis.

### Claim 11 (depends on 10)

The optical imaging lens assembly according to claim 10, wherein 1.90<CT2/CT3<4.50.

### Claim 12 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 1.50< (SAG11+SAG12)/(SAG12−SAG11)<3.00,
where SAG11 is an on-axis distance from an intersection of an object-side surface of the first lens and the optical axis to a vertex of an effective radius of the object-side surface of the first lens, and SAG12 is an on-axis distance from an intersection of an image-side surface of the first lens and the optical axis to a vertex of an effective radius of the image-side surface of the first lens.

### Claim 13 (depends on 1)

The optical imaging lens assembly according to claim 1, wherein 6.00<(DT11+DT12)/(DT11−DT12)<10.50,
where DT11 is a maximum effective radius of an object-side surface of the first lens, and DT12 is a maximum effective radius of an image-side surface of the first lens.