Lens Driving Device, Camera Module and Optical Apparatus

Patent metadata

Field	Value
Publication number	US-2016291285-A1
Application number	US-201615086840-A
Country	US
Kind code	A1
Filing date	Mar 31, 2016
Priority date	Apr 3, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A lens driving device is provided, the lens driving device includes: a housing; a bobbin disposed at an inner side of the housing; a support member coupled to the bobbin and the housing; and a sensor sensing a position of at least one of the bobbin and the housing, wherein the support member may include a first support unit, and a second support unit disposed not parallel to the first support unit, wherein the sensor may be disposed more adjacent to the first support unit than to the second support unit, and wherein an elastic modulus of the fist support unit may be lower than an elastic modulus of the second support unit.

First claim

What is claimed is:

1 . A lens driving device, comprising:
a housing; a bobbin disposed at an inner side of the housing; a support member coupled to the bobbin and the housing; and a sensor sensing a position of at least one of the bobbin and the housing, wherein the support member includes a first support unit, and a second support unit disposed not parallel to the first support unit, wherein the sensor is disposed more adjacent to the first support unit to the second support unit, and wherein an elastic modulus of the fist support unit is lower than an elastic modulus of the second support unit.

2 . The lens driving device of claim 1 , wherein
the first support unit is disposed along a y-axis direction perpendicular to an optical axis direction of a lens module coupled to the bobbin, and the second support unit is disposed along an x-axis direction perpendicular to the optical axis and to the y-axis.

3 . The lens driving device of claim 2 , wherein the support member includes:
a third support unit disposed apart from and parallel to the first support unit; and a fourth support unit disposed apart from and parallel to the second support unit.

4 . The lens driving device of claim 3 , wherein an x-axis elastic modulus of the first support unit and the third support unit is lower than a y-axis elastic modulus of the second support unit and the fourth support unit.

5 . The lens driving device of claim 3 , wherein the support member includes:
an upper support member connecting an upper portion of the housing and an upper portion of the bobbin; and a lower support member connecting a lower portion of the housing and a portion of the bobbin, wherein a support member, chosen between the upper elastic member and the lower elastic member, disposed adjacent to the sensor includes the first to the fourth support units.

6 . The lens driving device of claim 2 , wherein the first support unit includes:
a first support portion disposed closer to the y-axis direction than to the x-axis direction; and a second support portion disposed closer to the x-axis direction an to the y-axis direction, wherein an elastic modulus of the first support portion is lower than an elastic modulus of the second support portion.

7 . The lens driving device of claim 2 , wherein the second support unit includes:
a first support portion disposed closer to the y-axis direction than to the x-axis direction; and a second support portion disposed closer to the x-axis direction than to the y-axis direction, wherein an elastic modulus of the first support portion is lower than an elastic modulus of the second support portion.

8 . The lens driving device of claim 1 , wherein a thickness of the first support unit is thinner than a thickness of the second support unit.

9 . The lens driving device of claim 1 , wherein a width of the first support unit is thinner than a width of the second support unit.

10 . The lens driving device of claim 1 , wherein a length of the first support unit is longer than a length of the second support unit.

11 . The lens driving device of claim 5 , further comprising:
an FPCB (Flexible Printed Circuit Board) being applied with electric power from an external source; and a lateral support member supporting the housing with respect to a base, and electrically connecting the FPCB and the upper support member, wherein the sensor is supplied with electric power from the upper support member.

12 . The lens driving device of claim 11 , further comprising:
a connecting member electrically connecting the upper support member and the lower support member, wherein a coil disposed at an outer circumferential surface of the bobbin is supplied with electric power from the lower elastic member.

13 . The lens driving device of claim 12 , wherein
the upper support member further includes a fifth support unit and a sixth support unit, the first to the fourth support units are connected to the sensor, and the fifth support unit and the sixth support unit are connected to the lower support member,

14 . The lens driving device of claim 1 , further comprising:
a first driving portion disposed at the bobbin; and a second driving portion disposed at the housing, and facing the first driving portion.

15 . The lens driving device of claim 14 , further comprising:
a third driving portion disposed at a lower side of the housing, and facing the second driving portion.

16 . The lens driving device of claim 15 , wherein the first driving portion includes a coil, the second driving portion includes a magnet, and the third driving portion includes a coil.

17 . The lens driving device of claim 14 , wherein the support member is electrically connected to the sensor and the first driving portion.

18 . A lens driving device, comprising:
a bobbin; a housing spaced apart from the bobbin, and disposed an outer side of the bobbin; a support member coupled to the bobbin and the housing; and a sensor sensing a position of the bobbin, wherein the support member includes a first support unit disposed parallel to an x-axis perpendicular to an optical axis of a lens module coupled to the bobbin, and a second support unit disposed parallel to a y-axis perpendicular to the optical axis and to the x-axis, wherein the sensor is disposed closer to the first support unit than to the second support unit, and wherein an elastic modulus of the fist support unit is lower than an elastic modulus of the second support unit.

19 . A camera module, the camera module comprising the lens driving device of claim 1 .

20 . An optical apparatus, the optical apparatus comprising the camera module of claim 19 .

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok
• Min Sang Jun
• Lee Jun Taek

Classifications

• G03B2205/0069

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

• G03B3/10 Primary

  Power-operated focusing · CPC title

• G02B7/09 Primary

  adapted for automatic focusing or varying magnification · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• G03B13/36

  Autofocus systems · CPC title