Optical member driving mechanism

Patent metadata

Field	Value
Publication number	US-2019227300-A1
Application number	US-201916257376-A
Country	US
Kind code	A1
Filing date	Jan 25, 2019
Priority date	Jan 25, 2018
Publication date	Jul 25, 2019
Grant date	—

Abstract

An optical member driving mechanism is provided, including a fixed portion, a movable portion, and a driving module, wherein the movable portion is movably connected to the fixed portion and includes an optical member holder and a spacing member. The optical member holder can support an optical member and has a surface facing the optical member. The optical member can change the moving direction of an external light. The spacing member is disposed between the surface and the optical member, and a gap is formed between the surface and the optical member. The driving module can drive the movable portion to move relative to the fixed portion.

First claim

What is claimed is:

1 . An optical member driving mechanism, comprising:
a fixed portion; a movable portion, movably connected to the fixed portion, comprising:
an optical member holder, supporting an optical member and having a surface, wherein the optical member can change the moving direction of an external light, and the surface faces the optical member; and
a spacing member, disposed between the surface and the optical member and forming a gap therebetween; and
a driving module, driving the movable portion to move relative to the fixed portion.

2 . The optical member driving mechanism as claimed in claim 1 , wherein the spacing member is adjacent to the edge of the surface.

3 . The optical member driving mechanism as claimed in claim 1 , wherein the optical member driving mechanism further comprises an adhesive member, and the optical member holder further comprises an attaching wall, wherein the attaching wall is connected to the surface, and the adhesive member is disposed between the attaching wall and the optical member.

4 . The optical member driving mechanism as claimed in claim 3 , wherein the optical member holder further comprises a glue slot for accommodating at least a portion of the adhesive member, formed on the surface and adjacent to the attaching wall.

5 . The optical member driving mechanism as claimed in claim 3 , wherein the attaching wall comprises a groove, extending to a lateral side of the attaching wall.

6 . The optical member driving mechanism as claimed in claim 1 , wherein the optical member holder further comprises an abutting surface, and the optical member holder comprises a cutting surface, wherein the abutting surface connects the surface and faces the cutting surface, and the abutting surface and the cutting surface are substantially parallel.

7 . The optical member driving mechanism as claimed in claim 1 , wherein the fixed portion has at least three extending portions protruding from a lateral surface of the fixed portion, each of the extending portions has a contacting surface, and the contacting surfaces of the extending portions are coplanar.

8 . An optical member driving mechanism, comprising:
a fixed portion; a movable portion, movably connected to the fixed portion, comprising an optical member holder to support an optical member, wherein the optical member can change the moving direction of an external light from a first direction to a second direction; a driving module, driving the movable portion to rotate relative to the fixed portion around a rotation axis, wherein the rotation axis is substantially perpendicular to the first direction and the second direction; and a damping member, connected to the fixed portion and the movable portion, and disposed away from the rotation axis.

9 . The optical member driving mechanism as claimed in claim 8 , wherein the optical member driving mechanism further comprises a plurality of damping members, and the center of the optical member holder is disposed between the damping members.

10 . The optical member driving mechanism as claimed in claim 8 , wherein the optical member driving mechanism further comprises an elastic member, comprising:
a first fixing section, affixed to the fixed portion; a second fixing section, affixed to the movable portion; and a string section, connected to the first fixing section and the second fixing section, wherein the damping member is connected to the string section and the first fixing section, or the string section and the second fixing section.

11 . The optical member driving mechanism as claimed in claim 10 , wherein the optical member driving mechanism further comprises a plurality of elastic members, and the second fixing sections of the elastic members are coplanar.

12 . The optical member driving mechanism as claimed in claim 11 , wherein the optical member holder comprises a plurality of positioning pillars, and the elastic members comprise a plurality of positioning recesses corresponding to the positioning pillars.

13 . The optical member driving mechanism as claimed in claim 12 , wherein the optical member driving mechanism further comprises a glue connected the positioning pillars and the second fixing sections.

14 . The optical member driving mechanism as claimed in claim 11 , wherein the elastic member and the optical member overlap as seen from the rotation axis.

15 . The optical member driving mechanism as claimed in claim 11 , wherein the fixed portion further comprises a toughened component and a circuit board, wherein the toughened component is disposed on the circuit board, and the circuit board is disposed between the toughened component and the driving module.

16 . An optical member driving mechanism, comprising:
a fixed portion; a movable portion, movably connected to the fixed portion, comprising:
an optical member holder, supporting an optical member, wherein the optical member can change the moving direction of an external light from a first direction to a second direction; and
a rotation restricting structure, formed on the optical member holder and restricting the rotating range of the movable portion; and
a driving module, driving the movable portion to rotate relative to the fixed portion around a rotation axis, wherein the rotation axis is substantially perpendicular to the first direction and the second direction.

17 . The optical member driving mechanism as claimed in claim 16 , wherein the rotation restricting structure restricts the shift range of the movable portion.

18 . The optical member driving mechanism as claimed in claim 16 , wherein the movable portion further comprises a plurality of shift restricting structures, formed on the optical member holder and restricting the shifting distance of the movable portion along the rotation axis.

19 . The optical member driving mechanism as claimed in claim 18 , wherein when the movable portion rotates relative to the fixed portion and the rotation restricting structure contacts the fixed portion, a gap is formed between the shift restricting structure and the fixed portion.

20 . The optical member driving mechanism as claimed in claim 18 , wherein when the movable portion shifts relative to the fixed portion and the shift restricting structure contacts the fixed portion, a gap is formed between the rotation restricting structure and the fixed portion.

Assignees

• Tdk Taiwan Corp

Inventors

• Tsai Sung-Mao
• Ho Liang-Ting
• Hu Chao-Chang
• SONG Sin-Jhong

Classifications

• G03B5/04

  Vertical adjustment of lens; Rising fronts · CPC title

• G02B13/0065

  having a beam-folding prism or mirror · CPC title

• G02B7/1821

  for rotating or oscillating mirrors · CPC title

• G02B13/004

  having four lenses · CPC title

• G02B7/08

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