Lens moving apparatus

Patent metadata

Field	Value
Publication number	US-11867972-B2
Application number	US-202318094704-A
Country	US
Kind code	B2
Filing date	Jan 9, 2023
Priority date	Apr 24, 2014
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A lens moving apparatus including a housing; a bobbin disposed in the housing; a coil disposed on the bobbin; a magnet disposed on the housing to correspond to the coil; an upper elastic member coupled to an upper portion of the bobbin and an upper portion of the housing; and a damper coupled to the first elastic member and the housing. Further, the upper elastic member comprises a connector connecting the bobbin and the housing and a protrusion extending toward the housing, and the damper is coupled to the protrusion and the housing

First claim

What is claimed is:

1. A lens moving apparatus comprising:
a housing;
a bobbin disposed in the housing and configured to move in a first direction parallel to an optical axis;
an upper elastic member coupled to the bobbin and the housing; and
a damper coupled to the upper elastic member and the housing,
wherein the upper elastic member comprises an inner frame coupled to an upper portion of the bobbin and an outer frame coupled to an upper portion of the housing, a connector connecting the inner frame and the outer frame, and an extension portion extending from the connector,
wherein the connector comprises a first end connecting the inner frame, a second end connecting the outer frame, and an intermediate portion connecting the first end and the second end, and
wherein the extension portion extends from the intermediate portion and the damper is attached to the extension portion and the housing.

2. The lens moving apparatus according to claim 1 , wherein the damper is overlapped with the extension portion in the first direction and the damper is not overlapped with the connector in the first direction.

3. The lens moving apparatus according to claim 1 , wherein the damper is positioned closer to the outer frame than the inner frame.

4. The lens moving apparatus according to claim 1 , wherein the extension portion extends toward the housing from the intermediate portion horizontally.

5. The lens moving apparatus according to claim 1 , wherein the bobbin comprises a first support protrusion coupled to the inner frame, and the housing comprises a second support protrusion coupled to the outer frame, and
wherein the damper is positioned closer to the second support protrusion than the first support protrusion.

6. The lens moving apparatus according to claim 5 , wherein the fourth end of the extension portion is positioned closer to the outer frame than the inner frame.

7. The lens moving apparatus according to claim 5 , wherein a length of the extension portion from the third end to the fourth end is less than a length of the connector from the first end to the second end.

8. The lens moving apparatus according to claim 1 , wherein the extension portion comprises a third end connecting the intermediate portion and a fourth end opposite to the third end, and
wherein the damper is attached to the fourth end of the extension portion and the housing.

9. The lens moving apparatus according to claim 8 , wherein the fourth end of the extension portion comprises a through hole, and
wherein a portion of the damper is disposed between the through hole of the fourth end of the extension portion and the housing.

10. The lens moving apparatus according to claim 8 , wherein the housing comprises a recess corresponding to the fourth end of the extension portion, and a portion of the damper is disposed between the fourth end of the extension portion and the recess of the housing.

11. The lens moving apparatus according to claim 1 , wherein the connector has a shape bent at least one time.

12. The lens moving apparatus according to claim 1 , wherein the extension portion is spaced apart from the inner frame and the outer frame.

13. The lens moving apparatus according to claim 1 , wherein the damper is formed of UV-curable silicon.

14. The lens moving apparatus according to claim 1 , wherein the connector comprises two connectors spaced apart from each other,
wherein the extension portion comprises two extension portions corresponding to the two connectors, and the damper comprises two dampers corresponding to the two extension portions, and
wherein each of the two dampers is coupled to a corresponding one of the two extension portions.

15. The lens moving apparatus according to claim 1 , comprising:
a magnet disposed on the housing; and
a coil disposed on the bobbin and configured to move the bobbin in the first direction by an interaction with the magnet,
wherein the damper is configured to absorb vibration of the bobbin.

16. The lens moving apparatus according to claim 15 , comprising:
a sensing magnet disposed on the bobbin; and
a position sensor corresponding to the sensing magnet and configured to sense a magnetic force emitted from the sensing magnet.

17. The lens moving apparatus according to claim 16 , wherein the bobbin comprises a receiving recess formed in a side thereof, and the sensing magnet is disposed in the receiving recess of the bobbin.

18. The lens moving apparatus according to claim 16 , wherein the position sensor is a Hall sensor.

19. The lens moving apparatus according to claim 1 , further comprising a lower elastic member coupled to a lower portion of the housing and the bobbin.

20. A camera module comprising:
a lens;
the lens moving apparatus according to claim 1 ; and
an image sensor.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Jun Taek
• Son Byung Wook
• Park Sang Ok
• Lee Seong Min

Classifications

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G02B7/08 Primary

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

• G02B27/646

  compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68) · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G03B2205/0069

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