# US 10,120,164 B2 · Imaging lens assembly

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- Number: US 10,120,164 B2
- Document ID: US10120164B2
- Status: Granted
- Kind: B2
- Application number: 15/035,707
- Filed: 2016-01-13
- Published: 2018-03-22
- Granted: 2018-11-06
- Earliest claimed: 2015-06-09
- Assignees: Zhejiang Sunny Optics Co., Ltd.
- Applicants: Zhejiang Sunny Optics Co., Ltd.
- Inventors: Fujian Dai; Lin Huang
- Web page: https://patentgrep.com/patent/US10120164B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/60: having five components only
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Provided is an imaging lens assembly, including a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side of the imaging lens assembly to an image side of the imaging lens assembly in turn. The first lens is of a positive focal power, an object side surface of the first lens is convex; the second lens is of a negative focal power, an image side surface of the second lens is concave; the third lens is of a focal power; the fourth lens is of a focal power; and the fifth lens is of a negative focal power; and a combined focal power of the third lens and the fourth lens is negative. The imaging lens assembly meets the following formulas: 2.0<f/ImgH<3.0; and 0<f1/f<0.5.

## Claims

### Claim 1

An imaging lens assembly, comprising a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side of the imaging lens assembly to an image side of the imaging lens assembly in turn, wherein
the first lens is of a positive focal power, an object side surface of the first lens is convex;
the second lens is of a negative focal power, an image side surface of the second lens is concave;
the third lens is of a focal power;
the fourth lens is of a focal power; and
the fifth lens is of a negative focal power;
a combined focal power of the third lens and the fourth lens is negative;
the imaging lens assembly meets the following formulas:
2.0<f/ImgH<3.0; and
0<f1/f<0.5,
wherein f represents an effective focal length of the imaging lens assembly,
ImgH equals to a half-length of a diagonal of an effective pixel region at an imaging side surface of the imaging lens assembly, and
f1 represents an effective focal length of the first lens.

### Claim 2 (depends on 1)

The imaging lens assembly according to claim 1, further comprising an aperture stop arranged between the first lens and the second lens.

### Claim 3 (depends on 1)

The imaging lens assembly according to claim 1, wherein the imaging lens assembly meets the following formula:
TTL/f≤1.0,
wherein TTL is a total length of the imaging lens assembly, and
f represents an effective focal length of the imaging lens assembly.

### Claim 4 (depends on 1)

The imaging lens assembly according to claim 1, wherein the imaging lens assembly meets the following formula:
2.0<f1/CT1<4.0,
wherein f1 represents an effective focal length of the first lens, and
CT1 is a central thickness of the first lens.

### Claim 5 (depends on 1)

The imaging lens assembly according to claim 1, wherein the imaging lens assembly meets the following formula:
−3.0≤f5/≤f−1.0,
wherein f5 represents an effective focal length of the fifth lens, and
f represents an effective focal length of the imaging lens assembly.

### Claim 6 (depends on 1)

The imaging lens assembly according to claim 1, wherein the imaging lens assembly meets the following formulas:
−1.5<f3/f4<0; and
0<R6/R7<3.0,
wherein f3 represents an effective focal length of the third lens,
f4 represents an effective focal length of the fourth lens,
R6 represents a curvature radius of the image side surface of the third lens, and
R7 represents a curvature radius of the object side surface of the fourth lens.

### Claim 7 (depends on 1)

The imaging lens assembly according to claim 1, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.

### Claim 8 (depends on 7)

The imaging lens assembly according to claim 7, wherein the third lens is of a positive focal power, and an image side surface of the third lens is convex.

### Claim 9 (depends on 8)

The imaging lens assembly according to claim 8, wherein the fourth lens is of a negative focal power, and an object side surface of the fourth lens is concave.

### Claim 10 (depends on 2)

The imaging lens assembly according to claim 2, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.

### Claim 11 (depends on 3)

The imaging lens assembly according to claim 3, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.

### Claim 12 (depends on 4)

The imaging lens assembly according to claim 4, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.

### Claim 13 (depends on 5)

The imaging lens assembly according to claim 5, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.

### Claim 14 (depends on 6)

The imaging lens assembly according to claim 6, wherein an image side surface of the first lens is convex, and an object side surface of the second lens is concave.