Lens moving apparatus and camera module including same

Patent metadata

Field	Value
Publication number	US-10468959-B2
Application number	US-201615548697-A
Country	US
Kind code	B2
Filing date	Feb 1, 2016
Priority date	Feb 4, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A lens moving apparatus, according to one embodiment, comprises: a bobbin having a first coil installed on the outer circumferential surface thereof; a location detection sensor equipped to the bobbin; a housing in which the bobbin is provided; an upper elastic member disposed on the upper side of the housing; and a support member that supports the housing such that the housing can move in a second or third direction that is perpendicular to a first direction, wherein the upper elastic member is divided into a plurality of parts, at least two of which are disposed parallel to each other on the x-y plane in the second or third direction and are disposed such that end portions thereof face each other.

First claim

What is claimed is:

1. A lens moving apparatus comprising:
a lens;
a bobbin in which the lens is installed, the bobbin having a coil arranged on an outer circumferential surface thereof;
a position detection sensor provided to the bobbin;
a housing having the bobbin arranged on an inner side thereof;
an elastic member disposed on an upper side of the housing; and
a support member configured to support the housing so as to be movable in a second direction or a third direction perpendicular to a first direction,
wherein the elastic member is divided into a plurality of parts, and at least two of the parts are arranged in parallel with each other in an x-y plane in the second direction or the third direction, and
wherein the at least two parts are arranged such that one-side ends of the at least two parts face each other.

2. The lens moving apparatus according to claim 1 , wherein the elastic member comprises:
a first elastic member having one side connected to the coil and an opposite side connected to the support member, a portion of the first elastic member being arranged in the second direction or the third direction; and
a second elastic member arranged facing the first elastic member with a central portion of the bobbin placed therebetween, the first elastic member having one side connected to the coil and an opposite side connected to the support member.

3. The lens moving apparatus according to claim 2 , wherein the elastic member comprises:
a third elastic member having one side coupled to the bobbin and electrically connected to the position detection sensor, and an opposite side coupled to the housing and electrically connected to the support member;
wherein the third elastic member is arranged in parallel with the first elastic member in the x-y plane, the third elastic member having a one-side end arranged to face a one-side end of the first elastic member.

4. The lens moving apparatus according to claim 3 , wherein the elastic member comprises:
a fourth elastic member arranged in parallel with the second elastic member in the x-y plane and having a one-side end arranged to face a one-side end of the second elastic member,
wherein the fourth elastic member has one side coupled to the bobbin and electrically connected to the position detection sensor, and an opposite side coupled to the housing and electrically connected to the support member.

5. The lens moving apparatus according to claim 4 , wherein the elastic member comprises:
a fifth elastic member having one side coupled to the bobbin and electrically connected to the position detection sensor, and an opposite side coupled to the housing and electrically connected to the support member.

6. The lens moving apparatus according to claim 5 , wherein the elastic member comprises:
a sixth elastic member arranged facing the fifth elastic member with the central portion of the bobbin placed therebetween, the sixth elastic member having one side coupled to the bobbin and electrically connected to the position detection sensor and an opposite side coupled to the housing and electrically connected to the support member.

7. The lens moving apparatus according to claim 6 , wherein the fifth elastic member comprises:
a bobbin coupling portion coupled to the bobbin and electrically connected to the position detection sensor;
a support member coupling portion coupled to the housing and electrically connected to the support member; and
a connector configured to connect the bobbin coupling portion and the second support member coupling portion to each other.

8. The lens moving apparatus according to claim 2 , wherein the first elastic member or the second elastic member comprises:
a coil coupling portion electrically connected to an end of the coil;
a support member coupling portion electrically connected to an end of the support member; and
a connector configured to connect the coil coupling portion and the support member coupling portion to each other.

9. The lens moving apparatus according to claim 8 , wherein the bobbin is provided with a coupling boss at an upper portion thereof, and
wherein the end of the coil is wound around the coupling boss, and the end of the coil and the coil coupling portion are soldered to each other.

10. A lens moving apparatus comprising:
a lens;
a bobbin in which the lens is installed, the bobbin having a first coil arranged on an outer circumferential surface thereof;
a housing having the bobbin arranged on an inner side thereof;
a first magnet fixed to the housing;
a second coil arranged on a lower side of the first magnet to face the first magnet;
a printed circuit board arranged on a lower side of the second coil and having a terminal surface for installation of terminals; and
a base arranged under the bobbin and having the printed circuit board seated thereon and bonded,
wherein a lower surface of the base has a portion provided with a first recessed portion, the terminal surface of the printed circuit board being bonded to the portion.

11. The lens moving apparatus according to claim 10 , wherein the terminal surface is formed on a side surface of the printed circuit board so as to be bent; and
wherein the base has a portion provided with a bent portion bent to allow the terminal surface to be bonded thereto, the portion corresponding to the terminal surface.

12. The lens moving apparatus according to claim 11 , wherein the terminal surface comprises a plurality of terminal surfaces provided on the printed circuit board, and the bent portion comprises a same number of bent portions as of the terminal surfaces, the bent portions being arranged at positions corresponding to respective terminal surfaces.

13. The lens moving apparatus according to claim 11 , wherein the first recessed portion is formed to surround at least a part of the bent portion.

14. The lens moving apparatus according to claim 11 , wherein the base is formed to have a quadrangular outer shape when viewed in a first direction, and the bent portion is bent by extending from a side of the base.

15. The lens moving apparatus according to claim 14 , wherein the base comprises:
an escape formed by cutting a corner of the base.

16. The lens moving apparatus according to claim 15 , wherein the escape is spaced apart from a front end and a rear end of the bent portion arranged in a longitudinal direction of the bent portion, and
wherein the first recessed portion is formed to surround at least a part of the front end and rear end of the bent portion.

17. The lens moving apparatus according to claim 10 , wherein an upper surface of the base is provided with a second recessed portion allowing an excess of an adhesive for bonding the printed circuit board to the base to be introduced thereinto.

18. The lens moving apparatus according to claim 17 , wherein the base is provided with a circular hollow, and the second recessed portion is formed along a circumferential surface of the hollow.

19. The lens moving apparatus according to claim 18 , wherein the second recessed portion comprises a plurality of second recessed portions, the second recessed portions being arranged at a constant interval along the circumferential surface of the hollow.

20. A camera module comprising:
the lens moving apparatus of claim 1 .

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok
• Yoo Kyoung Ho
• Lee Sung Guk
• Lee Seong Min
• Lee Jun Taek
• Son Byung Wook

Classifications

• H02K33/18

  with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets · CPC title

• G02B27/08 Primary

  Kaleidoscopes · CPC title

• H02K11/21

  Devices for sensing speed or position, or actuated thereby (specially adapted for machines having non-mechanical commutating devices H02K29/06, H02K29/14) · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G03B2205/0007

  Movement of one or more optical elements for control of motion blur · CPC title