# US 11,906,704 B2 · Camera optical lens

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- Number: US 11,906,704 B2
- Document ID: US11906704B2
- Status: Granted
- Kind: B2
- Application number: 17/136,038
- Filed: 2020-12-29
- Published: 2022-03-24
- Granted: 2024-02-20
- Earliest claimed: 2020-09-18
- Assignees: Raytech Optical (Changzhou) Co., Ltd.
- Applicants: Raytech Optical (Changzhou) Co., Ltd
- Inventors: Jie Meng
- Web page: https://patentgrep.com/patent/US11906704B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/62: having six components only
- G02B 13/06: Panoramic objectives; So-called "sky lenses" {including panoramic objectives having reflecting surfaces}
- 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 negative refractive power; a second lens having a positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power; wherein, the camera optical lens satisfies: −4.50≤f1/f≤−2.20; 2.00≤f2/f≤5.50; −20.00≤(R3+R4)/(R3−R4)≤−2.50; and 3.00≤d9/d10≤10.00; where, f denotes a focus length of camera optical lens; f1 and f2 denote focus lengths of first and second lens respectively; d9 denotes an on-axis thickness of fifth lens; d10 denotes an on-axis distance from an image side surface of fifth lens to an object side surface of sixth lens; R3 and R4 denote central curvature radii of an object side surface and an object side surface of second lens respectively.

## Claims

### Claim 1

A camera optical lens, comprising six lenses in total, the six lenses are, 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 having a positive refractive power;
a fourth lens having a negative refractive power;
a fifth lens having a positive refractive power; and
a sixth lens having a negative refractive power;
wherein, the camera optical lens satisfies the following conditions:
−4.50≤f1/f≤−2.20;
2.00≤f2/f≤5.50;
−20.00≤(R3+R4)/(R3−R4)≤−2.50;
1.50≤(R7+R8)/(R7−R8)≤10.00; and
3.00≤d9/d10≤10.00;
where,
f denotes a focus length of the camera optical lens;
f1 denotes a focus length of the first lens;
f2 denotes a focus length of the second lens;
d9 denotes an on-axis thickness of the fifth lens;
d10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens;
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 second lens,
R7 denotes a central curvature radius of an object side surface of the fourth lens; and
R8 denotes a central curvature radius of an image 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:
−5.66≤(R1+R2)/(R1−R2)≤−0.19; and
0.03≤d1/TTL≤0.14;
where,
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;
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 3 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.02≤d3/TTL≤0.08;
where,
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 4 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.39≤f3/f≤1.61;
0.17≤(R5+R6)/(R5−R6)≤0.98; and
0.06≤d5/TTL≤0.21;
where,
f3 denotes a focus 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 an image side surface of the third lens;
d5 denotes an on-axis thickness 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 5 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
−54.92≤f4/f≤−1.29; and
0.02≤d7/TTL≤0.09;
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 6 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
0.27≤f5/f≤1.19;
0.97≤(R9+R10)/(R9−R10)≤3.87; and
0.06≤d9/TTL≤0.22;
where,
f5 denotes a focus length of the fifth lens;
R9 denotes a central curvature radius of an object side surface of the fifth lens;
R10 denotes a central curvature radius of the image side surface 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 7 (depends on 1)

The camera optical lens according to claim 1, wherein, the camera optical lens further satisfies the following conditions:
−1.38≤f6/f≤−0.31;
0.55≤(R11+R12)/(R11−R12)≤−3.19; and
0.03≤d11/TTL≤0.13;
where,
f6 denotes a focus length of the sixth lens;
R11 denotes a central curvature radius of the object side surface of the sixth lens;
R12 denotes a central curvature radius of an image side surface of the sixth lens;
d11 denotes an on-axis thickness of the sixth 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≤1.66;
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≤103°;
where,
FOV denotes a field of view of the camera optical lens.