Lens module

Patent metadata

Field	Value
Publication number	US-2016349504-A1
Application number	US-201615009145-A
Country	US
Kind code	A1
Filing date	Jan 28, 2016
Priority date	May 27, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A lens module includes a lens barrel, a plurality of lenses disposed in the lens barrel and aligned along an optical axis, and a spacer, disposed between the plurality of lenses, comprising a light blocking hole configured to allow light incident to the plurality of lenses to pass therethrough, wherein a light absorbing layer is disposed on a wall surface of the spacer forming the light blocking hole.

First claim

What is claimed is:

1 . A lens module comprising:
a lens barrel; a plurality of lenses disposed in the lens barrel and aligned along an optical axis; and a spacer, disposed between the plurality of lenses, comprising a light blocking hole configured to allow light incident to the plurality of lenses to pass therethrough, wherein a light absorbing layer is disposed on a wall surface of the spacer forming the light blocking hole.

2 . The lens module of claim 1 , wherein the light absorbing layer is a black coating film.

3 . The lens module of claim 1 , wherein the light absorbing layer comprises a black iron oxide.

4 . The lens module of claim 1 , wherein the wall surface of the spacer is inclined at a predetermined angle with respect to the optical axis so as to prevent a path of the light from being blocked by the wall surface of the spacer.

5 . The lens module of claim 1 , wherein the wall surface of the spacer is formed to be concave in order to prevent light reflected from the wall surface of the spacer to pass through the light blocking hole.

6 . The lens module of claim 5 , wherein the wall surface of the spacer is a curved surface comprising a preset curvature.

7 . The lens module of claim 1 , wherein the wall surface of the spacer is a curved surface configured to prevent light from being incident on other portions except for an edge portion, a portion at which an upper surface of the spacer and the wall surface of the spacer intersect each other.

8 . The lens module of claim 1 , wherein the wall surface of the spacer includes first and second curved portions comprising a preset curvature and an edge portion at which the first and second curved portions intersect each other.

9 . The lens module of claim 8 , wherein the first and second curved portions are discontinuous curves.

10 . The lens module of claim 8 , wherein the edge portion protrudes toward the optical axis further than other portions of the side wall of the spacer.

11 . The lens module of claim 1 , wherein the spacer is formed of a metal.

12 . A lens module comprising:
a lens barrel; a plurality of lenses disposed in the lens barrel and stacked along an optical axis; a plurality of spacers, disposed between the plurality of lenses, comprising light blocking holes configured to allow light incident to the plurality of lenses to pass therethrough, wherein a wall surface of any one of the plurality of spacers forms the light blocking hole and comprises a plurality of inclined surfaces, the wall surface of the spacer, forming the light blocking hole, is a perpendicular surface, an inclined surface, or a curved surface, or any combination thereof, and a light absorbing layer is disposed on the wall surface of the plurality of spacers.

13 . The lens module of claim 12 , wherein the inclined surfaces comprise discontinuous curves.

14 . The lens module of claim 12 , wherein an angle between an upper surface of one spacer of the plurality of spacers and the wall surface is less than 90°.

15 . The lens module of claim 14 , wherein an edge portion, disposed at the intersection of the upper surface and the wall surface, is sharp.

Assignees

• Samsung Electro Mech

Inventors

• Kim Duck Hun
• Kang Young Suk

Classifications

• G02B5/003

  Light absorbing elements · CPC title

• G02B13/0045

  having five or more lenses · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title

• G02B27/0018 Primary

  with means for preventing ghost images (anti-reflection coatings G02B1/11) · CPC title

• G02B7/00

  Mountings, adjusting means, or light-tight connections, for optical elements · CPC title