# US 10,371,919 B2 · Lens module

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- Number: US 10,371,919 B2
- Document ID: US10371919B2
- Status: Granted
- Kind: B2
- Application number: 15/680,278
- Filed: 2017-08-18
- Published: 2018-10-18
- Granted: 2019-08-06
- Earliest claimed: 2017-04-15
- Assignees: AAC Technologies Pte. Ltd.
- Applicants: Jia Wan
- Inventors: Jia Wan
- Web page: https://patentgrep.com/patent/US10371919B2

## CPC

- G02B 7/026: {using retaining rings or springs (G02B7/027 takes precedence)}
- G02B 5/021: {the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures}
- G02B 7/021: {for more than one lens}
- G02B 27/0018: {with means for preventing ghost images (anti-reflection coatings G02B1/11)}
- G02B 13/004: {having four lenses}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present disclosure provides a lens module. The lens module includes a lens barrel; a lens group accommodated in the lens barrel, the lens group including at least a first lens; and a retaining member located an image side of the lens group. The retaining member is a hollow ring which includes an object side leaning and connecting to the first lens, an image side opposite to the object side, an outer side and an inner side connecting to the object side and the image side, and the inner side is a Lambertian surface through Lambertian treatment.

## Claims

### Claim 1

A lens module including:
a lens barrel;
a lens group accommodated in the lens barrel, the lens group including at least a first lens;
a retaining member located an image side of the lens group; wherein
the retaining member is a hollow ring which includes an object side leaning and connecting to the first lens, an image side opposite to the object side, an outer side and an inner side connecting to the object side and the image side, and the inner side is a Lambertian surface through Lambertian treatment.

### Claim 2 (depends on 1)

The lens module as described in claim 1 wherein the inner side is an arc.

### Claim 3 (depends on 2)

The lens module as described in claim 2 wherein the inner side is an arc projecting along an optical axis of the lens module.

### Claim 4 (depends on 2)

The lens module as described in claim 2 wherein the inner side is an arc depressing along an optical axis.

### Claim 5 (depends on 3)

The lens module as described in claim 3 wherein a vertical distance between one end of the inner side near an object side and an optical axis is less than or equal to a vertical distance between one end of the inner side near an image side and an optical axis.

### Claim 6 (depends on 5)

The lens module as described in claim 5 wherein the image side is a plane.

### Claim 7 (depends on 6)

The lens module as described in claim 6 wherein the object side, the image side and the outer side are Lambertian surfaces through Lambertian processing.

### Claim 8 (depends on 6)

The lens module as described in claim 6 further including a second lens in the lens barrel by the object side of the first lens, and the second lens and the first lens are arranged along an optical axis.