# US 12,000,987 B2 · Camera optical lens

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- Number: US 12,000,987 B2
- Document ID: US12000987B2
- Status: Granted
- Kind: B2
- Application number: 17/138,778
- Filed: 2020-12-30
- Published: 2022-04-14
- Granted: 2024-06-04
- Earliest claimed: 2020-10-13
- Assignees: Raytech Optical (Changzhou) Co., Ltd.
- Applicants: Raytech Optical (Changzhou) Co., Ltd
- Inventors: Jiekang Chen
- Web page: https://patentgrep.com/patent/US12000987B2

## 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 an optical lens and discloses a camera optical lens. The camera optical lens includes nine lenses, and the nine lenses from an object side to an image side are: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens. The second lens has a positive refractive power, and the camera optical lens satisfies: −5.50≤f1/f≤−2.00; 3.00≤d15/d16≤15.00; wherein, f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d15 denotes an on-axis thickness of the eighth lens, and d16 denotes an on-axis distance from an image-side surface of the eighth lens to an object-side surface of the ninth lens. The camera optical lens has good optical performance, and meets the design requirements of large apertures, and ultra-thin.

## Claims

### Claim 1

A camera optical lens, comprising nine lenses, the nine lenses from an object side to an image side being:
a first lens with a negative refractive power;
a second lens with a positive refractive power;
a third lens with a positive refractive power;
a fourth lens with a positive refractive power;
a fifth lens with a negative refractive power;
a sixth lens with a negative refractive power;
a seventh lens with a positive refractive power;
an eighth lens with a positive refractive power; and
a ninth lens with a negative refractive power;
wherein the camera optical lens satisfies following conditions:
−5.50≤f1/f≤−2.00; 3.00≤d15/d16≤15.00;
where
f denotes a focal length of the camera optical lens;
f1 denotes a focal length of the first lens;
d15 denotes an on-axis thickness of the eighth lens;
d16 denotes an on-axis distance from an image-side surface of the eighth lens to an object-side surface of the ninth lens.

### Claim 2 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
1.50≤f2/f≤4.50;
where f2 denotes a focal length of the second lens.

### Claim 3 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
2.10≤(R1+R2)/(R1−R2)≤14.14; 0.01≤d1/TTL≤0.04;
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;
TTL denotes a total track length of the camera optical lens.

### Claim 4 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
−16.98≤(R3+R4)/(R3−R4)≤−2.69; 0.01≤d3/TTL≤0.06;
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;
d3 denotes an on-axis thickness of the second lens;
TTL denotes a total track length of the camera optical lens.

### Claim 5 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
0.28≤f3/f≤0.85; 0.11≤(R5+R6)/(R5−R6)≤0.33; 0.02≤d5/TTL≤0.06;
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;
d5 denotes an on-axis thickness of the third lens;
TTL denotes a total track length of the camera optical lens.

### Claim 6 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
26.56≤f4/f≤91.14; 10.71≤(R7+R8)/(R7−R8)≤34.57; 0.02≤d7/TTL≤0.06;
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;
d7 denotes an on-axis thickness of the fourth lens;
TTL denotes a total track length of the camera optical lens.

### Claim 7 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
−2.41≤f5/f≤−0.80; 0.40≤(R9+R10)/(R9−R10)≤1.28; 0.02≤d9/TTL≤0.05;
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;
d9 denotes an on-axis thickness of the fifth lens;
TTL denotes a total track length of the camera optical lens.

### Claim 8 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
−2.86≤f6/f≤−0.93; −2.09≤(R11+R12)/(R11−R12)≤−0.68; 0.02≤d11/TTL≤0.05;
where
f6 denotes a focal length of the sixth lens;
R11 denotes a central curvature radius of an 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;
TTL denotes a total track length of the camera optical lens.

### Claim 9 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
0.54≤f7/f≤1.63; 0.39≤(R13+R14)/(R13−R14)≤1.18; 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;
d13 denotes an on-axis thickness of the seventh lens;
TTL denotes a total track length of the camera optical lens.

### Claim 10 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
3.55≤f8/f≤13.35; 3.05≤(R15+R16)/(R15−R16)≤13.06; 0.07≤d15/TTL≤0.25;
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 the image-side surface of the eighth lens;
TTL denotes a total track length of the camera optical lens.

### Claim 11 (depends on 1)

The camera optical lens according to claim 1, further satisfying following conditions:
−1.55≤f9/f≤−0.51; 0.06≤(R17+R18)/(R17−R18)≤0.36; 0.02≤d17/TTL≤0.05;
where
f9 denotes a focal length of the ninth lens;
R17 denotes a central curvature radius of the object-side surface of the ninth lens;
R18 denotes a central curvature radius of an image-side surface of the ninth lens;
d17 denotes an on-axis thickness of the ninth lens;
TTL denotes a total track length of the camera optical lens.