Lens driving module

Patent metadata

Field	Value
Publication number	US-2018106980-A1
Application number	US-201715787068-A
Country	US
Kind code	A1
Filing date	Oct 18, 2017
Priority date	Oct 18, 2016
Publication date	Apr 19, 2018
Grant date	—

Abstract

An optical member driving module is provided, including a moving mechanism, a base, a suspension wire, and an electromagnetic driving mechanism for driving the moving mechanism to move relative to the base. The moving mechanism includes an optical member holder, and the base has a first surface, a second surface, and an opening. The second surface faces the optical member holder and is opposite to the first surface. The opening extends from the first surface to the second surface. The suspension wire extends through the opening, and the opposite ends of the suspension wire are respectively affixed to the first surface and the moving mechanism.

First claim

What is claimed is:

1 . An optical member driving module, comprising:
a movable mechanism, comprising an optical member holder; a base, comprising a main body, wherein the main body comprises a first surface, a second surface, and an opening, the second surface faces the optical member holder and is opposite to the first surface, and the opening extends from the first surface to the second surface; a suspension wire, extended through the opening, wherein the opposite end of the suspension wire are respectively affixed to the first surface and the movable mechanism; and an electromagnetic driving mechanism, which is used to drive the movable mechanism to move relative to the base.

2 . The optical member driving module as claimed in claim 1 , wherein a gap is formed between the suspension wire and the inner wall of the opening.

3 . The optical member driving module as claimed in claim 1 , wherein the base has a depression portion, and the distance between a bottom surface of the depression portion and the second surface is less than the distance between the first surface and the second surface.

4 . The optical member driving module as claimed in claim 3 , wherein the optical member driving module is disposed on an image sensor module, and at least a portion of the image sensor module is accommodated in the depression portion.

5 . The optical member driving module as claimed in claim 1 , wherein the base has a protrusion protruding from the first surface.

6 . The optical member driving module as claimed in claim 5 , wherein the protrusion is adjacent to the suspension wire.

7 . The optical member driving module as claimed in claim 5 , wherein the base has a lateral surface connected to the first surface and the second surface, and an end of the suspension wire is disposed between the lateral surface and the protrusion.

8 . The optical member driving module as claimed in claim 1 , wherein the base further comprises a first wire, disposed on a first surface.

9 . The optical member driving module as claimed in claim 8 , wherein the base further comprises an inner wire embedded in the main body and electrically connected to the first wire.

10 . The optical member driving module as claimed in claim 9 , wherein the first wire and the inner wire are formed on the main body by insert molding.

11 . The optical member driving module as claimed in claim 8 , wherein the first wire is formed on the main body by coating or using a molded interconnect device.

12 . The optical member driving module as claimed in claim 8 , wherein the first wire is formed by a metal sheet connected to the main body.

13 . The optical member driving module as claimed in claim 1 , wherein the optical member driving module further comprises a second wire disposed on the second surface and electrically connected to the electromagnetic driving mechanism.

14 . An optical member driving module, comprising:
a movable mechanism, comprising an optical member holder; a base, comprising:
a main body, comprising a plurality of metal frames separated from each other; and
a first insulation layer, wherein the thickness of the first insulation layer is less than half of the thickness of the main body; and
an electromagnetic driving mechanism, which is used to drive the movable mechanism to move relative to the base.

15 . The optical member driving module as claimed in claim 14 , wherein the thickness of the first insulation layer is less than 1 / 4 of the thickness of the main body.

16 . The optical member driving module as claimed in claim 14 , wherein the main body further comprises an extending portion, extended in a direction away from the movable mechanism, wherein the optical member driving module further comprises a suspension wire extended through the opening and connected to the movable mechanism and the base.

17 . The optical member driving module as claimed in claim 16 , wherein the base further comprises a first blocking member surrounding the extending portion.

18 . The optical member driving module as claimed in claim 17 , wherein the first blocking member has a hollow structure, and the base further comprises a damping member disposed in the hollow structure.

19 . The optical member driving module as claimed in claim 14 , wherein the optical member driving module further comprises a position detector, connecting some metal frames of the main body.

20 . The optical member driving module as claimed in claim 19 , wherein the base further comprises a second blocking member surrounding a connecting portion between the position detector and the main body.

21 . The optical member driving module as claimed in claim 14 , wherein the base further comprises a third blocking member surrounding the main body.

22 . The optical member driving module as claimed in claim 14 , wherein the main body further comprises an extending portion, extended toward the movable mechanism, and the movable mechanism is connected to the extending portion.

23 . The optical member driving module as claimed in claim 14 , wherein the base further comprises a coil assembly, and the main body is disposed between the coil assembly and the first insulation layer.

24 . The optical member driving module as claimed in claim 23 , wherein the base further comprises a second insulation layer, and the second insulation layer is disposed between the coil assembly and the main body.

25 . The optical member driving module as claimed in claim 14 , wherein the base further comprises a metal substrate, and the first insulation layer is disposed between the main body and the metal substrate.

Assignees

• Tdk Taiwan Corp

Inventors

• Yu Cheng-Kai
• Chen Yi-Ho
• Hu Chao-Chang
• SONG Sin-Jhong

Classifications

• 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

• G02B7/10 Primary

  by relative axial movement of several lenses, e.g. of varifocal objective lens · CPC title