# US 12,001,081 B2 · Camera optical lens

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- Number: US 12,001,081 B2
- Document ID: US12001081B2
- Status: Granted
- Kind: B2
- Application number: 17/227,400
- Filed: 2021-04-12
- Published: 2022-08-18
- Granted: 2024-06-04
- Earliest claimed: 2021-02-08
- Assignees: Changzhou Raytech Optronics Co., Ltd.
- Applicants: Changzhou Raytech Optronics Co., Ltd.
- Inventors: Hiroyuki Teraoka; Takayuki Sakaguchi
- Web page: https://patentgrep.com/patent/US12001081B2

## CPC

- G02B 9/64: having more than six components
- G02B 13/0045: {having five or more lenses}
- G02B 13/06: Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces}
- G03B 30/00: Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
- 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 invention relates to a field of optical lens, and provides a camera optical lens including, from an object side to an image side in sequence: a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens, a seventh lens having a negative refractive power and provided with an image-side surface as a free-form surface; and the camera optical lens satisfies conditions of: |f2/f3|≤0.07; −0.50≤f2/f4≤−0.30; 0.58≤D12/f≤0.64; and 0.35≤D23/f≤0.45. The camera optical lens provided by the present disclosure has |TV_D|<1.0%, has excellent optical performance, is of wide angle with 2ω>110°, and includes seven lenses.

## Claims

### Claim 1

A camera optical lens comprising, from an object side to an image side in sequence: a first lens having a negative refractive power, a second lens having a positive refractive power, a third lens, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens, a seventh lens having a negative refractive power and provided with an image-side surface as a free-form surface; wherein the camera optical lens satisfies conditions of:
|f2/f3|≤0.07;
−0.50≤f2/f4≤−0.30;
0.58≤D12/f≤0.64; and
0.35≤D23/f≤0.45; and
where
f denotes a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
f3 denotes a focal length of the third lens;
f4 denotes a focal length of the fourth lens;
D12 denotes an on-axis distance from an object-side surface of the first lens to an image-side surface of the second lens; and
D23 denotes an on-axis distance from an object-side surface of the second lens to an image-side surface of the third lens.

### Claim 2 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies a condition of:
−4.50≤f7/f≤−1.90;
where
f7 denotes a focal length of the seventh lens.

### Claim 3 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies a condition of:
0.90≤v1/v2≤1.10;
where
v1 denotes an abbe number of the first lens; and
v2 denotes an abbe number of the second lens.

### Claim 4 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies a condition of:
0.90≤v3/v2≤1.10;
where
v3 denotes an abbe number of the third lens; and
v2 denotes the abbe number of the second lens.