# US 12,000,984 B2 · Camera optical lens

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- Number: US 12,000,984 B2
- Document ID: US12000984B2
- Status: Granted
- Kind: B2
- Application number: 17/137,442
- Filed: 2020-12-30
- Published: 2022-03-31
- Granted: 2024-06-04
- Earliest claimed: 2020-09-29
- Assignees: Changzhou Raytech Optronics Co., Ltd.
- Applicants: Changzhou Raytech Optronics Co., Ltd.
- Inventors: Jia Chen
- Web page: https://patentgrep.com/patent/US12000984B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/64: having more than six components
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure relates to optical lens, and provides a camera optical lens including from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; wherein the camera optical lens satisfies the following conditions: 0.95≤f/TTL; −5.00≤f2/f≤−2.50; and 2.50≤(R11+R12)/(R11−R12)≤15.00. The camera optical lens can achieve good optical performance while meeting design requirements for a large aperture, a long focal length and ultra-thinness.

## Claims

### Claim 1

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 negative refractive power, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens, and an eighth lens having a negative refractive power; wherein the camera optical lens satisfies the following conditions:
0.95≤f/TTL;
−5.00≤f2/f≤−2.50; and
2.50≤(R11+R12)/(R11−R12)≤15.00;
where
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;
f denotes a focal length of the camera optical lens;
f2 denotes a focal length of the second lens;
R11 denotes a central curvature radius of an object-side surface of the sixth lens; and
R12 denotes a central curvature radius of an image-side surface of the sixth lens.

### Claim 2 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following condition:
3.00≤d5/d6≤12.00;
where
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 an object-side surface of the fourth lens.

### Claim 3 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
0.34≤f1/f≤1.26;
−3.56≤(R1+R2)/(R1−R2)≤−1.00; and
0.06≤d1/TTL≤0.19;
where
f1 denotes a focal 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; and
d1 denotes an on-axis thickness of the first lens.

### Claim 4 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
−0.12≤(R3+R4)/(R3−R4)≤0.61; and
0.01≤d3/TTL≤0.05;
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 second lens; and
d3 denotes an on-axis thickness of the second lens.

### Claim 5 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
0.56≤f3/f≤2.09;
−3.49≤(R5+R6)/(R5−R6)≤−0.47; and
0.04≤d5/TTL≤0.13;
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 an image-side surface of the third lens; and
d5 denotes an on-axis thickness of the third lens.

### Claim 6 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
−1.82≤f4/f≤−0.49;
0.37≤(R7+R8)/(R7−R8)≤1.50; and
0.02≤d7/TTL
where
f4 denotes a focal length of the fourth 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; and
d7 denotes an on-axis thickness of the fourth lens.

### Claim 7 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
1.05≤f5/f≤5.61;
−2.19≤(R9+R10)/(R9−R10)≤−0.07; and
0.03≤d9/TTL≤0.09;
where
f5 denotes a focal 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 an image-side surface of the fifth lens; and
d9 denotes an on-axis thickness of the fifth lens.

### Claim 8 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
1.16≤f6/f≤14.68; and
0.02≤d11/TTL≤0.09;
where
f6 denotes a focal length of the sixth lens; and
d11 denotes an on-axis thickness of the sixth lens.

### Claim 9 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
−102.11≤f7/f≤3.64;
−75.04≤(R13+R14)/(R13−R14)≤5.73; and
0.03≤d13/TTL≤0.08;
where
f7 denotes a focal length of the seventh lens;
R13 denotes a central curvature radius of an object-side surface of the seventh lens;
R14 denotes a central curvature radius of an image-side surface of the seventh lens; and
d13 denotes an on-axis thickness of the seventh lens.

### Claim 10 (depends on 1)

The camera optical lens according to claim 1, wherein the camera optical lens further satisfies the following conditions:
−3.14≤f8/f≤−0.46;
0.23≤(R15+R16)/(R15−R16)≤1.17; and
0.03≤d15/TTL≤0.10;
where
f8 denotes a focal length of the eighth lens;
R15 denotes a central curvature radius of an object-side surface of the eighth lens;
R16 denotes a central curvature radius of an image-side surface of the eighth lens; and
d15 denotes an on-axis thickness of the eighth lens.