Lens moving apparatus

Patent metadata

Field	Value
Publication number	US-12386193-B2
Application number	US-202418633619-A
Country	US
Kind code	B2
Filing date	Apr 12, 2024
Priority date	Nov 14, 2014
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A lens moving apparatus includes a bobbin including a first coil disposed therearound, a first magnet disposed to face the first coil, a housing for supporting the first magnet, upper and lower elastic members each coupled to both the bobbin and the housing, a base disposed to be spaced apart from the housing by a predetermined distance, a second coil disposed to face the first magnet, a printed circuit board on which the second coil is mounted, a plurality of support members, which support the housing such that the housing is movable in second and/or third directions and which connect at least one of the upper and lower elastic members to the printed circuit board, and a conductive member for conductively connecting the upper and lower elastic members.

First claim

The invention claimed is:

1. A lens moving apparatus, comprising:
a base;
a housing disposed on the base;
a bobbin disposed in the housing so as to move in a first direction along an optical axis;
a first coil disposed on the bobbin;
a first magnet disposed to be opposite to the first coil;
a first sensor disposed on the housing and comprising a plurality of pins;
an upper elastic member coupled to the housing and an upper surface of the bobbin and comprising a first upper elastic member, a second upper elastic member, a third upper elastic member, and a fourth upper elastic member, which are spaced apart from one another;
a lower elastic member coupled to the housing and a lower surface of the bobbin;
a printed circuit board disposed between the base and the housing and conductively connected to at least one of the upper and lower elastic members;
a second coil disposed to face the first magnet;
a support member comprising at least one wire that supports the housing such that the housing is movable with respect to the base in second and/or third directions perpendicular to the first direction and conductively connecting at least one of the upper and lower elastic member to the printed circuit board;
a plurality of circuit patterns conductively connected to the plurality of pins of the first sensor; and
a plurality of elastic member contacts including a first elastic member contact conductively connected to the first upper elastic member, a second elastic member contact conductively connected to the second upper elastic member, a third elastic member contact conductively connected to the third upper elastic member, and a fourth elastic member contact conductively connected to the four upper elastic member,
wherein the first sensor is disposed lower than the plurality of elastic member contacts.

2. The lens moving apparatus according to claim 1 , wherein an outer circumferential surface of the bobbin faces to the first coil.

3. The lens moving apparatus according to claim 1 , wherein an inner contour of a lower end of the housing has an octagonal shape.

4. The lens moving apparatus according to claim 1 , wherein the housing includes four first side portions and four second side portions.

5. The lens moving apparatus according to claim 4 , wherein the four second side portions are disposed on four corners of the housing, respectively.

6. The lens moving apparatus according to claim 4 , wherein an upper portion of each of the second side portions comprises a respective first through hole, and
wherein the support member extends through each first through hole and is connected to the upper elastic member.

7. The lens moving apparatus according to claim 6 , wherein the housing comprises a first recess under at least one of the first through holes.

8. The lens moving apparatus according to claim 1 , wherein the first coil has at least four surfaces that are configured to be linear and corner surfaces connected between the four surfaces that also are configured to be linear.

9. The lens moving apparatus according to claim 1 ,
wherein the lower elastic member comprises first and second lower elastic members, which are spaced apart from each other.

10. The lens moving apparatus according to claim 9 , wherein power is supplied to the first coil through the first and second lower elastic members.

11. The lens moving apparatus according to claim 1 , wherein the support member comprises:
a first support member electrically connecting the first upper elastic member to the printed circuit board;
a second support member electrically connecting the second upper elastic member to the printed circuit board;
a third support member electrically connecting the third upper elastic member to the printed circuit board; and
a fourth support member electrically connecting the fourth upper elastic member to the printed circuit board.

12. The lens moving apparatus according to claim 11 , wherein the first sensor is connected to the first to fourth support members through the first to fourth upper elastic members.

13. The lens moving apparatus according to claim 1 , comprising:
a second magnet disposed on the bobbin.

14. The lens moving apparatus according to claim 1 , wherein the first upper elastic member comprises a first inner frame coupled to the bobbin, a first outer frame coupled to the housing, and a first frame connector connecting the first inner frame to the first outer frame,
wherein the second upper elastic member comprises a second inner frame coupled to the bobbin, a second outer frame coupled to the housing, and a second frame connector connecting the second inner frame to the second outer frame,
wherein the third upper elastic member comprises a third outer frame coupled to the housing, and
wherein the fourth upper elastic member comprises a fourth outer frame coupled to the housing.

15. The lens moving apparatus according to claim 1 ,
wherein the second coil is formed on the printed circuit board in a form of a circuit pattern.

16. The lens moving apparatus according to claim 1 , wherein the second coil directly faces a bottom surface of the first magnet.

17. The lens moving apparatus according to claim 1 , wherein the second coil is spaced apart from the first magnet by a predetermined distance.

18. A camera module, comprising:
the lens moving apparatus of claim 1 ;
a lens barrel coupled to the bobbin;
a printed circuit board; and
an image sensor disposed on the printed circuit board.

19. A phone, comprising:
the camera module of claim 18 ;
a controller configured to control a distance between the lens barrel and the image sensor.

20. A lens moving apparatus comprising:
a base;
a housing spaced apart from the base;
a bobbin disposed in the housing so as to move in a first direction;
a sensor disposed on the housing;
upper and lower elastic members each coupled to the housing and the bobbin;
a printed circuit board conductively connected to at least one of the upper and lower elastic members;
a support member comprising at least one wire, which supports the housing such that the housing is movable with respect to the base in second and/or third directions and which conductively connects at least one of the upper and lower elastic members to the printed circuit board;
a plurality of circuit patterns conductively connected to the sensor; and
a plurality of elastic member contacts including a first elastic member contact conductively connected to the first upper elastic member, a second elastic member contact conductively connected to the second upper elastic member, a third elastic member contact conductively connected to the third upper elastic member, and a fourth elastic member contact conductively connected to the fourth upper elastic member,
wherein the sensor is disposed lower than the plurality of elastic member contacts.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok
• Min Sang Jun

Classifications

• G02B7/08

  adapted to co-operate with a remote control mechanism · CPC title

• G03B5/04

  Vertical adjustment of lens; Rising fronts · CPC title

• G03B5/02

  Lateral adjustment of lens · CPC title

• H01F7/20

  without armatures (cores H01F3/00; coils H01F5/00 {; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381}) · CPC title

• H01F27/325

  Coil bobbins (formers for coils in general H01F5/02) · CPC title