# US 10,371,926 B2 · Camera lens

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- Number: US 10,371,926 B2
- Document ID: US10371926B2
- Status: Granted
- Kind: B2
- Application number: 15/230,611
- Filed: 2016-08-08
- Published: 2017-10-12
- Granted: 2019-08-06
- Earliest claimed: 2016-04-08
- Assignees: AAC Technologies Pte. Ltd.
- Applicants: Rongbao Shi; Hiroyuki Teraoka
- Inventors: Rongbao Shi; Hiroyuki Teraoka
- Web page: https://patentgrep.com/patent/US10371926B2

## CPC

- G02B 13/004: {having four lenses}
- G02B 9/34: having four components only
- G02B 27/0025: {for optical correction, e.g. distorsion, aberration}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A camera lens is disclosed. The camera lens includes: a first lens with positive refractive power; a second lens with negative refractive power; a third lens with positive refractive power; a fourth lens with negative refractive power, which are arranged sequentially from an object side. The camera lens is characterized in that it satisfies specified conditions.

## Claims

### Claim 1

A camera lens consisting of, in an order from an object side to an image side:
a first lens with positive refractive power;
a second lens with negative refractive power;
a third lens with positive refractive power;
a fourth lens with negative refractive power; wherein the camera lens satisfies following conditions (1-A)˜(3-A), and (5-A):
1.30≤f1/f≤1.40 (1-A);
−2.00≤f4/f≤−0.90 (2);
−2.00≤(R1+R2)/(R1−R2)≤−1.50 (3-A);
0.65≤f3/f≤0.75 (5-A);
where,
f: overall focal distance of the camera lens;
f1: focal distance of the first lens;
f3: focal distance of the third lens;
f4: focal distance of the fourth lens;
R1: curvature radius of the first lens' object side surface;
R2: curvature radius of the first lens' image side surface.

### Claim 2 (depends on 1)

The camera lens as described in claim 1 further satisfying the following condition (4):
−4.00≤f2/f≤−2.00 (4);
where,
f: overall focal distance of the camera lens;
f2: focal distance of the second lens.

### Claim 3 (depends on 1)

The camera lens as described in claim 1 further satisfying following condition (2-A):
−1.30≤f4/f≤−1.00 (2-A).

### Claim 4 (depends on 2)

The camera lens as described in claim 2 further satisfying following condition (4-A):
−3.20≤f2/f≤−2.50 (4-A).