Camera module

Patent metadata

Field	Value
Publication number	US-12578545-B2
Application number	US-202117474354-A
Country	US
Kind code	B2
Filing date	Sep 14, 2021
Priority date	Jan 7, 2021
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

A camera module includes: a first lens module disposed in a housing and including at least one lens; a reflective member configured to change a path of light toward the first lens module; an extension member configured to be moved together with the reflective member, and disposed between the reflective member and the first lens module; and a shake compensation actuator disposed in the extension member and configured to tilt the reflective member with respect to an axis perpendicular to an optical axis of the first lens module.

First claim

What is claimed is:

1 . A camera module, comprising:
a first lens module disposed in a housing and including at least one lens; a reflective member configured to change a path of light toward the first lens module; a holder accommodating the reflective member; an extension member configured to be moved together with the reflective member, and disposed between the reflective member and the first lens module; and a shake compensation actuator disposed in the extension member and configured to tilt the reflective member with respect to an axis perpendicular to an optical axis of the first lens module, the shake compensation actuator comprising a pair of magnets disposed on opposing surfaces of the extension member along one direction perpendicular to the optical axis and another pair of magnets disposed on opposing surfaces of the extension member along another direction perpendicular to both the optical axis and the one direction, wherein the extension member is disposed between the holder and the first lens module.

2 . The camera module of claim 1 , wherein the shake compensation actuator includes coils facing the pair of magnets.

3 . The camera module of claim 2 , wherein the pair of magnets include a first pair of magnets fixedly disposed in the extension member and facing each other in a first direction perpendicular to the optical axis, and
wherein the coils include a first pair of coils fixedly disposed in the housing and facing the first pair of magnets.

4 . The camera module of claim 3 , wherein the other pair of magnets include a second pair of magnets fixedly disposed in the extension member and facing each other in a second direction perpendicular to both the optical axis and the first direction, and
wherein the coils include a second pair of coils fixedly disposed in the housing and facing the second pair of magnets, respectively.

5 . The camera module of claim 3 , further comprising:
a pair of position sensors arranged in positions respectively corresponding to magnets configuring the first pair of magnets, wherein the reflective member includes a reflective surface configured to change a direction of the light, and a tilt axis of the reflective member is parallel to the reflective surface.

6 . The camera module of claim 1 , wherein the extension member includes a transparent material and allows light reflected from the reflective member to pass through the extension member.

7 . The camera module of claim 1 , wherein the extension member includes a through portion allowing light reflected from the reflective member to pass through the extension member.

8 . The camera module of claim 7 ,
wherein the extension member extends from the holder toward the first lens module.

9 . The camera module of claim 1 , further comprising at least one additional lens disposed in the extension member.

10 . The camera module of claim 1 , further comprising a second lens module spaced apart from the first lens module in a direction of the optical axis.

11 . The camera module of claim 10 , further comprising an actuator configured to independently move the first lens module and the second lens module in the direction of the optical axis.

12 . The camera module of claim 1 , further comprising:
a ball member disposed between the reflective member and the housing, wherein the reflective member is configured to tilt with respect to the axis perpendicular to the optical axis, in a state of being supported by the ball member in the housing in a direction parallel to the optical axis.

13 . The camera module of claim 12 , further comprising:
a first magnetic member coupled to the reflective member; and a second magnetic member fixedly disposed in the housing and facing the first magnetic member, wherein the ball member supports the reflective member in the direction parallel to the optical axis by magnetic attraction generated between the first magnetic member and the second magnetic member.

14 . A camera module, comprising:
a lens module disposed in a housing and including at least one lens; a reflective assembly configured to reflect light, which is incident in a first direction, toward the lens module; a holder accommodating the reflective member; an extension member configured to be moved together with the reflective member; and a shake compensation actuator configured to tilt the reflective assembly with respect to an axis perpendicular to both the first direction and an optical axis of the lens module, wherein the shake compensation actuator includes a first pair of magnets fixedly disposed in the reflective assembly and facing each other in the first direction, a second pair of magnets fixedly disposed in the reflective assembly and facing each other in a second direction, different from the first direction, perpendicular to the optical axis, and a pair of coils fixedly disposed in the housing and facing the first pair of magnets, and wherein the extension member is disposed between the holder and the first lens module.

15 . The camera module of claim 14 , wherein the reflective assembly includes a reflective member configured to reflect the light, and a structure fixedly coupled to the reflective member and having the pair of second magnets mounted in the structure.

16 . A shake compensation reflective module, comprising:
a housing; a reflective member disposed in the housing and allowing incident light to be changed in path and exit the reflective member; an extension member configured to move together with the reflective member and extending in a direction in which light changed in path exits the reflective member; and a shake compensation actuator disposed in the extension member and enabling the reflective member to be tilted with respect to an axis perpendicular to the direction in which the light exits the reflective member, the shake compensation actuator comprising a pair of magnets disposed on opposing surfaces of the extension member along one direction perpendicular to the optical axis and another pair of magnets disposed on opposing surfaces of the extension member along another direction perpendicular to both the optical axis and the one direction, wherein the extension member is formed of a transparent material.

17 . The shake compensation reflective module of claim 16 , wherein the extension member includes an open space through which the light changed in path is allowed to pass after exiting the reflective member.

18 . The shake compensation reflective module of claim 17 , further comprising at least one additional lens disposed within the open space.

19 . The shake compensation reflective module of claim 16 , wherein the shake compensation actuator includes a first magnet and a second magnet respectively disposed in sides of the reflective member that are spaced apart from each other in a first direction perpendicular to the direction in which the light changed in path exits the reflective member.

20 . The shake compensation reflective module of claim 19 , wherein the shake compensation actuator includes a third magnet and a fourth magnet respectively disposed in sides of the reflective member that are spaced apart from each other in a second direction perpendicular to the first direction and the direction in which the light changed in path exits the reflective member.

21 . The shake compensation reflective module of claim 19 , wherein the incident light is incident to the reflective member in a direction perpendi

Assignees

• Samsung Electro Mech
• Samsung Eiectro Mech Co Ltd

Inventors

• Son Joung Ho

Classifications

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G02B7/09

  adapted for automatic focusing or varying magnification · CPC title

• G02B13/0065 Primary

  having a beam-folding prism or mirror · CPC title

• G03B2205/0069

  using electromagnetic actuators, e.g. voice coils · CPC title