Lens module

Patent metadata

Field	Value
Publication number	US-11347018-B2
Application number	US-201916526949-A
Country	US
Kind code	B2
Filing date	Jul 30, 2019
Priority date	Aug 15, 2018
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

Provided is a lens module, including a lens barrel and a lens group. The lens barrel includes a first barrel wall and a second barrel wall. The lens group at least include a first lens and a second lens. The first barrel wall has an image-side surface, including a first planar surface horizontally extending from a joint between the first barrel wall and the second barrel wall towards an optical axis, a protruding portion connected to the first planar surface and protruding towards the first lens, and a second planar surface horizontally extending from the protruding portion towards the optical axis. The first lens has a first peripheral portion, including a third planar surface, a recess portion connected to the third planar surface and a fourth planar surface connected to the recess portion. The protruding portion is attached to the recess portion.

First claim

What is claimed is:

1. A lens module, comprising:
a lens barrel; and
a lens group received in the lens barrel,
wherein the lens barrel comprises a first barrel wall extending in a horizontal direction and a second barrel wall extending from the first barrel wall while being bent, the first barrel wall comprising a first surface close to an object side and a second surface close to an image side,
the lens group at least comprises a first lens and a second lens that are arranged from an object side to an image side, the first lens being a glass lens and comprising a first optical portion and a first peripheral portion surrounding the first optical portion,
wherein the second surface of the first barrel wall comprises:
a first planar surface horizontally extending from a joint between the first barrel wall and the second barrel wall towards an optical axis;
a protruding portion connected to the first planar surface and protruding towards the first lens; and
a second planar surface horizontally extending from the protruding portion towards the optical axis,
wherein the first peripheral portion comprises:
a third planar surface horizontally extending from an outer edge of the first peripheral portion towards the optical axis;
a recess portion connected to the third planar surface; and
a fourth planar surface connected to the recess portion, and
wherein the protruding portion is attached to the recess portion, wherein the protruding portion comprises: a first oblique surface obliquely extending from the first planar surface towards the optical axis and towards the image side; a first arcuate transition surface connected to the first oblique surface; a fifth planar surface horizontally extending from the first arcuate transition surface towards the optical axis; a second arcuate transition surface connected to the fifth planar surface; and a second oblique surface obliquely extending from the second arcuate transition surface towards the optical axis and towards the object side, the second oblique surface being connected to the second planar surface, wherein the recess portion comprises: a third oblique surface obliquely extending from the third planar surface towards the optical axis and towards the image side; a third arcuate transition surface connected to the third oblique surface; a sixth planar surface horizontally extending from the third arcuate transition surface towards the optical axis; a fourth arcuate transition surface connected to the sixth planar surface; and a fourth oblique surface obliquely extending from the fourth arcuate transition surface towards the optical axis and towards the object side, the first arcuate transition surface is spaced apart from the third arcuate transition surface, the second arcuate transition surface is spaced apart from the fourth arcuate transition surface, and the sixth planar surface is attached to the fifth planar surface.

2. The lens module as described in claim 1 , wherein the recess portion has a length in the horizontal direction that gradually decreases along a recess depth.

3. The lens module as described in claim 1 , wherein the first oblique surface has a gradient equal to that of the second oblique surface.

4. The lens module as described in claim 1 , wherein the third oblique surface is attached to the first oblique surface, and the fourth oblique surface is attached to the second oblique surface.

5. The lens module as described in claim 1 , wherein the third planar surface is connected to the third oblique surface through an arcuate transition, and the fourth oblique surface is connected to the fourth planar surface through an arcuate transition.

6. The lens module as described in claim 1 , wherein the first lens has an outer-edge end surface spaced apart from an inner wall surface of the lens barrel.

Assignees

• Aac Technologies Pte Ltd
• Aac Optics Solutions Pte Ltd

Inventors

• Wang Hailong

Classifications

• G02B13/004

  having four lenses · CPC title

• G02B7/22 Primary

  Extensible connections, e.g. bellows · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title