# US 10,871,636 B2 · Camera optical lens

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- Number: US 10,871,636 B2
- Document ID: US10871636B2
- Status: Granted
- Kind: B2
- Application number: 16/530,999
- Filed: 2019-08-02
- Published: 2020-02-20
- Granted: 2020-12-22
- Earliest claimed: 2018-08-14
- Assignees: AAC Optics Solutions Pte. Ltd.
- Applicants: AAC Technologies Pte. Ltd.
- Inventors: Takaaki Teranishi; Lei Zhang; Yanmei Wang; Yaqiong Guo
- Web page: https://patentgrep.com/patent/US10871636B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 7/102: {controlled by a microcomputer (cameras with interchangeable lenses G03B17/14)}
- H04N 23/67: Focus control based on electronic image sensor signals
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

## Claims

### Claim 1

A camera optical lens comprising, from an object side to an image side in sequence: a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions:
−2.749≤f1/f≤−1.261;
1.71≤n2≤2.052;
1.709≤n5≤2.062;
0.041≤d3/TTL≤0.058; where
f: the focal length of the camera optical lens;
f1: the focal length of the first lens;
n2: the refractive index of the second lens;
n5: the refractive index of the fifth lens;
d3: the thickness on-axis of the second lens;
TTL: the total distance from the object side surface of the first lens to the image plane along the optic axis.

### Claim 2 (depends on 1)

The camera optical lens as described in claim 1, wherein the first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material.

### Claim 3 (depends on 1)

The camera optical lens as described in claim 1, wherein first lens has a negative refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
2.27≤(R1+R2)/(R1−R2)≤8.61;
0.02≤d1/TTL≤0.07; where
R1: the curvature radius of object side surface of the first lens;
R2: the curvature radius of image side surface of the first lens;
d1: the thickness on-axis of the first lens.

### Claim 4 (depends on 3)

The camera optical lens as described in claim 3 further satisfying the following conditions:
3.63≤(R1+R2)/(R1−R2)≤6.89;
0.03≤d1/TTL≤0.05.

### Claim 5 (depends on 1)

The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
0.58≤f2/f≤2.31;
−6.67≤(R3+R4)/(R3−R4)≤−1.68; where
f2: the focal length of the second lens;
R3: the curvature radius of the object side surface of the second lens;
R4: the curvature radius of the image side surface of the second lens.

### Claim 6 (depends on 5)

The camera optical lens as described in claim 5 further satisfying the following conditions:
0.93≤f2/f≤1.85;
−4.17≤(R3+R4)/(R3−R4)≤−2.10.

### Claim 7 (depends on 1)

The camera optical lens as described in claim 1, wherein the third lens has a convex object side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
0.62≤f3/f≤2.07;
−2.19≤(R5+R6)/(R5−R6)≤−0.51;
0.05≤d5/TTL≤0.16; where
f3: the focal length of the third lens;
R5: the curvature radius of the object side surface of the third lens;
R6: the curvature radius of the image side surface of the third lens;
d5: the thickness on-axis of the third lens.

### Claim 8 (depends on 7)

The camera optical lens as described in claim 7 further satisfying the following conditions:
0.99≤f3/f≤1.66;
−1.37≤(R5+R6)/(R5−R6)≤−0.64;
0.08≤d5/TTL≤0.12.

### Claim 9 (depends on 1)

The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a concave object side surface relative to the proximal axis and a convex image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
0.79≤f4/f≤2.60;
0.87≤(R7+R8)/(R7−R8)≤2.95;
0.04≤d7/TTL≤0.14; where
f4: the focal length of the fourth lens;
R7: the curvature radius of the object side surface of the fourth lens;
R8: the curvature radius of the image side surface of the fourth lens;
d7: the thickness on-axis of the fourth lens.

### Claim 10 (depends on 9)

The camera optical lens as described in claim 9 further satisfying the following conditions:
1.26≤f4/f≤2.08;
1.39≤(R7+R8)/(R7−R8)≤2.36;
0.06≤d7/TTL≤0.11.

### Claim 11 (depends on 1)

The camera optical lens as described in claim 1, wherein the fifth lens has a negative refractive power with a concave object side surface relative to the proximal axis and a convex image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
−2.65≤f5/f≤−0.75;
−11.94≤(R9+R10)/(R9−R10)≤−3.37;
0.02≤d9/TTL≤0.09; where
f5: the focal length of the fifth lens;
R9: the curvature radius of the object side surface of the fifth lens;
R10: the curvature radius of the image side surface of the fifth lens;
d9: the thickness on-axis of the fifth lens.

### Claim 12 (depends on 11)

The camera optical lens as described in claim 11 further satisfying the following conditions:
−1.66≤f5/f≤−0.94;
−7.46≤(R9+R10)/(R9−R10)≤−4.22;
0.04≤d9/TTL≤0.08.

### Claim 13 (depends on 1)

The camera optical lens as described in claim 1, wherein the sixth lens has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis; the camera optical lens further satisfies the following conditions:
1.49≤f6/f≤5.79;
−75.96≤(R11+R12)/(R11−R12)≤1439.02;
0.10≤d11/TTL≤0.32; where
f6: the focal length of the sixth lens;
R11: the curvature radius of the object side surface of the sixth lens;
R12: the curvature radius of the image side surface of the sixth lens;
d11: the thickness on-axis of the sixth lens.

### Claim 14 (depends on 13)

The camera optical lens as described in claim 13 further satisfying the following conditions:
2.39≤f6/f≤4.63;
−47.78≤(R11+R12)/(R11−R12)≤1151.22;
0.16≤d11/TTL≤0.26.

### Claim 15 (depends on 1)

The camera optical lens as described in claim 1 further satisfying the following condition:
2.30≤f12/f≤9.90; where
f12: the combined focal length of the first lens and the second lens.

### Claim 16 (depends on 15)

The camera optical lens as described in claim 15 further satisfying the following condition:
3.69≤f12/f≤7.92.

### Claim 17 (depends on 1)

The camera optical lens as described in claim 1, wherein the total distance from the object side surface of the first lens to the image plane along the optic axis is less than or equal to 5.17 mm.

### Claim 18 (depends on 1)

The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.27.

### Claim 19 (depends on 18)

The camera optical lens as described in claim 18, wherein the aperture F number of the camera optical lens is less than or equal to 2.22.