Lens driving apparatus, and camera module and optical device comprising same

Patent metadata

Field	Value
Publication number	US-11947183-B2
Application number	US-202217662892-A
Country	US
Kind code	B2
Filing date	May 11, 2022
Priority date	Aug 6, 2015
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

An embodiment includes: a housing including an upper surface, a lower surface, an inner surface, and an outer surface located at the side opposite to the inner surface; a bobbin accommodated in the housing; a first coil disposed at an outer surface of the bobbin; a first magnet disposed at the outer surface of the housing; a second magnet disposed in the housing so as to be spaced apart from the first magnet; and a first position sensor disposed at the outer surface of the bobbin, wherein a first part of the housing is positioned between the second magnet and the inner surface of the housing.

First claim

The invention claimed is:

1. A lens moving apparatus comprising:
a housing;
a bobbin disposed in the housing;
a first coil disposed on the bobbin;
a magnet disposed on the housing to be opposite to the first coil;
a sensing magnet disposed on the bobbin;
an upper elastic member coupled to an upper portion of the housing and an upper portion of the bobbin; and
a first position sensor disposed on the housing,
wherein the housing comprises an upper surface, a lower surface, an inner circumferential surface, and an outer circumferential surface, and
wherein the housing comprises a first portion disposed between the first position sensor and the outer circumferential surface of the housing.

2. The lens moving apparatus according to claim 1 , wherein, as a temperature increases, the first portion of the housing expands.

3. The lens moving apparatus according to claim 1 , wherein the housing comprises a first seat in which the first position sensor is disposed.

4. The lens moving apparatus according to claim 3 , wherein the first portion of the housing is positioned between the first seat and the outer circumferential surface of the housing.

5. The lens moving apparatus according to claim 1 , wherein the first position sensor is exposed from the inner circumferential surface of the housing.

6. The lens moving apparatus according to claim 5 , wherein a side surface of the first position sensor is exposed from the inner circumferential surface of the housing.

7. The lens moving apparatus according to claim 3 , wherein the first seat is depressed from the inner circumferential surface and comprises a first opening that is open at the upper surface of the housing.

8. The lens moving apparatus according to claim 7 , wherein the first seat comprises a second opening that is open at the inner circumferential surface of the housing.

9. The lens moving apparatus according to claim 1 , wherein, as a temperature increases and the first portion of the housing expands, a distance between the second magnet and the first position sensor consequently decreases.

10. The lens moving apparatus according to claim 1 , comprising an upper elastic member coupled to the bobbin and the housing.

11. The lens moving apparatus according to claim 10 , wherein the first position sensor is electrically connected to the upper elastic member.

12. The lens moving apparatus according to claim 10 , comprising:
a second coil opposite to the first magnet;
a circuit board electrically connected to the second coil; and
a support member conductively connected to the upper elastic member and the circuit board.

13. The lens moving apparatus according to claim 12 , wherein the support member is coupled to the upper elastic member.

14. The lens moving apparatus according to claim 12 , wherein the upper elastic member comprises first to fourth upper elastic members, and
wherein the support member comprises first to fourth support members, and each of the first to fourth support members is connected to a corresponding one of the first to fourth upper elastic members.

15. The lens moving apparatus according to claim 14 , wherein the first position sensor is electrically connected to the upper elastic member.

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

17. An optical device comprising the camera module according to claim 16 .

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok
• Min Sang Jun
• Yoo Kyoung Ho
• Yoo Hyune O

Classifications

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• G02B7/02 Primary

  for lenses {(supports for magnifying lenses G02B25/002)} · CPC title

• G02B7/08

  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