# US 12,000,982 B2 · Camera optical lens

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- Number: US 12,000,982 B2
- Document ID: US12000982B2
- Status: Granted
- Kind: B2
- Application number: 17/137,434
- Filed: 2020-12-30
- Published: 2022-03-24
- Granted: 2024-06-04
- Earliest claimed: 2020-09-22
- Assignees: Raytech Optical (Changzhou) Co., Ltd.
- Applicants: Raytech Optical (Changzhou) Co., Ltd
- Inventors: Shujian Ding
- Web page: https://patentgrep.com/patent/US12000982B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 13/04: Reversed telephoto objectives
- G02B 9/60: having five components only
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Disclosed is a camera optical lens, comprising, from an object side to an image side in sequence: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens having a positive refractive power; and a fifth lens having a negative refractive power; wherein, the camera optical lens satisfies the following conditions: 0.95≤f1/f≤1.15; 5.70≤R7/R8≤31.00; 1.05≤d5/d6≤2.00; and 1.25≤(R9+R10)/(R9−R10)≤5.00; where, f denotes a focus length of the camera optical lens; f1 denotes a focus length of the first lens; R7 and R8 denote central curvature radii of an object side surface and an image side surface of the fourth lens; R9 denotes central curvature radius of an object side surface and an image side surface of the fifth lens respectively; d5 denotes an on-axis thickness of the third lens.

## Claims

### Claim 1

A camera optical lens, comprising five lenses in total, wherein, the five lenses are, from an object side to an image side in sequence:
a first lens having a positive refractive power;
a second lens having a negative refractive power;
a third lens having a positive refractive power;
a fourth lens having a positive refractive power; and
a fifth lens having a negative refractive power;
wherein an image side surface of the first lens is convex in the paraxial region;
wherein, the camera optical lens satisfies the following conditions:
0.95≤f1/f≤1.15;
−0.78≤(R1+R2)/(R1−R2)≤−0.38,
5.70≤R7/R8≤31.00;
1.05≤d5/d6≤2.00; and
1.25≤(R9+R10)/(R9−R10)≤5.00;
where,
f denotes a focus length of the camera optical lens;
f1 denotes a focus length of the first lens;
R1 denotes a central curvature radius of an object side surface of the first lens;
R2 denotes a central curvature radius of an image side surface of the first lens,
R7 denotes a central curvature radius of an object side surface of the fourth lens;
R8 denotes a central curvature radius of an image side surface of the fourth lens;
R9 denotes a central curvature radius of an object side surface of the fifth lens;
R10 denotes a central curvature radius of an image side surface of the fifth lens;
d5 denotes an on-axis thickness of the third lens; and
d6 denotes an on-axis distance from an image side surface of the third lens to the object side surface of the fourth lens.

### Claim 2 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
−2.50≤f2/f≤−1.50;
where,
f2 denotes a focus length of the second lens.

### Claim 3 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.08≤d1/TTL≤0.27;
where,
d1 denotes an on-axis thickness of the first lens; and
TTL denotes a total optical length from the object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 4 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.30≤(R3+R4)/(R3−R4)≤1.44; and
0.03≤d3/TTL≤0.08;
where,
R3 denotes a central curvature radius of an object side surface of the second lens;
R4 denotes a central curvature radius of an image side surface of the third lens;
d3 denotes an on-axis thickness of the second lens; and
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 5 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
4.78≤f3/f≤5548.17;
−10.35≤(R5+R6)/(R5−R6)≤737.34; and
0.05≤d5/TTL≤0.16;
where,
f3 denotes a focal length of the third lens;
R5 denotes a central curvature radius of an object side surface of the third lens;
R6 denotes a central curvature radius of the image side surface of the third lens; and
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 6 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.31≤f4/f≤1.62;
0.53≤(R7+R8)/(R7−R8)≤2.13; and
0.06≤d7/TTL≤0.23;
where,
f4 denotes a focus length of the fourth lens;
d7 denotes an on-axis thickness of the fourth lens; and
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 7 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
−3.19≤f5/f≤−0.38; and
0.03≤d9/TTL≤0.18;
where,
f5 denotes a focus length of the fifth lens;
d9 denotes an on-axis thickness of the fifth lens; and
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 8 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
TTL/IH≤1.45;
where,
IH denotes an image height of the camera optical lens; and
TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis.

### Claim 9 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
FOV≥89.00°;
where,
FOV denotes a field of view of the camera optical lens.

### Claim 10 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
0.92≤f12/f≤3.04;
where,
f12 denotes a combined focal length of the first lens and the second lens.