Lens driving apparatus, camera module and optical device

Patent metadata

Field	Value
Publication number	US-12422692-B2
Application number	US-202318231840-A
Country	US
Kind code	B2
Filing date	Aug 9, 2023
Priority date	Sep 29, 2017
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A lens driving apparatus, a camera module including the lens driving apparatus, and an optical device including the camera module are provided. The lens driving apparatus includes a base; a first substrate placed on the base; a housing placed on the first substrate; a bobbin placed inside the housing; a lower resilient member for coupling the bobbin and the housing; a first coil placed on the bobbin; a magnet placed on the housing and facing the first coil; and a second substrate placed on the first substrate and comprising a second coil which faces the magnet. The lower resilient member is connected to the first substrate or the second substrate.

First claim

What is claimed is:

1. A lens driving device comprising:
a base;
a housing disposed on the base;
a bobbin disposed in the housing;
a magnet and a first coil configured to move the bobbin with respect to the housing in a direction of an optical axis;
a bearing disposed between the base and the housing;
an upper elastic member coupled with the housing and the bobbin;
a lower elastic member disposed between the base and the housing; and
a support elastic member disposed between the lower elastic member and the base,
wherein the bearing is disposed between the support elastic member and the base, and
wherein each of the upper elastic member, the lower elastic member and the support elastic member is directly coupled with the housing.

2. The lens driving device of claim 1 , wherein at least a portion of the support elastic member is disposed perpendicular to the optical axis.

3. The lens driving device of claim 1 , further comprising a base unit comprising the base and a first substrate electrically connected with the support elastic member.

4. The lens driving device of claim 3 , wherein the lower elastic member comprises a first coupling portion coupled with the bobbin, a second coupling portion coupled with a lower surface of the housing, a first connecting portion connecting the first coupling portion and the second coupling portion, a third coupling portion coupled with the base unit, and a second connecting portion connecting the second coupling portion and the third coupling portion.

5. The lens driving device of claim 4 ,
wherein the second connecting portion of the lower elastic member is spaced apart from the upper elastic member.

6. The lens driving device of claim 4 , wherein the second connecting portion of the lower elastic member elastically connects the second coupling portion of the lower elastic member and the third coupling portion of the lower elastic member.

7. The lens driving device of claim 3 , wherein the support elastic member comprises a support portion coupled with the housing, and an extension portion connecting the support portion and a portion coupled with the base unit.

8. The lens driving device of claim 3 , further comprising a position sensor configured to sense the bobbin.

9. The lens driving device of claim 8 , wherein the position sensor is electrically connected with the first substrate.

10. The lens driving device of claim 1 , wherein the bearing is configured to guide a movement of the housing in a direction perpendicular to the optical axis.

11. The lens driving device of claim 1 , wherein the bearing comprises four bearings.

12. A camera module comprising:
a printed circuit board;
an image sensor disposed on the printed circuit board;
the lens driving device of claim 1 disposed on the printed circuit board; and
a lens coupled with the lens driving device.

13. An optical apparatus:
a main body;
the camera module of claim 12 disposed on the main body; and
a display panel disposed on the main body and configured to output an image photographed by the camera module.

14. The lens driving device of claim 1 , wherein the lower elastic member is not electrically connected with the support elastic member.

15. The lens driving device of claim 1 , further comprising a second coil configured to move the housing with respect to the base in a direction perpendicular to the optical axis.

16. The lens driving device of claim 1 , wherein the lower elastic member is overlapped with the bearing in in a direction perpendicular to the optical axis.

17. A lens driving device comprising:
a base;
a cover disposed on the base and comprising an upper plate and a lateral plate;
a housing disposed between the base and the cover;
a bobbin disposed in the cover;
a magnet and a first coil configured to move the bobbin in a direction of an optical axis;
a bearing disposed between the base and the housing;
an upper elastic member coupled with the housing and the bobbin;
a lower elastic member disposed between the base and the housing; and
a support elastic member disposed between the lower elastic member and the base,
wherein the bearing is disposed between the support elastic member and the base, and
wherein the lower elastic member and support elastic member are formed as separate members, and
wherein each of the upper elastic member, the lower elastic member and the support elastic member is directly coupled with the housing.

18. The lens driving device of claim 17 , further comprising a position sensor configured to sense the bobbin.

19. The lens driving device of claim 18 , further comprising a first substrate electrically connected with the support elastic member,
wherein the position sensor is electrically connected with the first substrate.

20. The lens driving device of claim 17 , wherein the bearing comprises four bearings.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok

Classifications

• H04N23/51

  Housings · CPC title

• G03B13/36

  Autofocus systems · CPC title

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G03B17/12

  with means for supporting objectives, supplementary lenses, filters, masks, or turrets · CPC title

• G03B2205/0069

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