Optical member driving mechanism

Patent metadata

Field	Value
Publication number	US-2021063684-A1
Application number	US-202016808832-A
Country	US
Kind code	A1
Filing date	Mar 4, 2020
Priority date	Aug 30, 2019
Publication date	Mar 4, 2021
Grant date	—

Abstract

An optical member driving mechanism is provided, including a movable portion, a fixed portion, and a driving assembly. The movable portion is connected to an optical member. The fixed portion has an accommodating space, and the optical member is received in the accommodating space. The movable portion is movable relative to the fixed portion. The driving assembly is configured to 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 movable portion, configured to connect an optical member; a fixed portion, having an accommodating space, wherein the optical member is received in the accommodating space, and the movable portion is movable relative to the fixed portion; and a driving assembly, configured to drive the movable portion to move relative to the fixed portion.

2 . The optical member driving mechanism as claimed in claim 1 , wherein the optical member driving mechanism further comprises a magnetic permeability member, embedded in the movable portion.

3 . The optical member driving mechanism as claimed in claim 2 , wherein the movable portion has a plurality of grooves, and the magnetic permeability member is exposed from the grooves.

4 . The optical member driving mechanism as claimed in claim 2 , wherein the movable portion has a plurality of grooves, and the longitudinal directions of at least two grooves are different.

5 . The optical member driving mechanism as claimed in claim 2 , wherein the movable portion has an inner surface and a plurality of grooves formed on the inner surface, and the magnetic permeability member has a connecting portion and a curved portion connected to the connecting portion, wherein a distance between the curved portion and the inner surface is less than a distance between the connecting portion and the inner surface.

6 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a magnet disposed on the movable portion, and at least a portion of the magnetic permeability member is adjacent to the magnet.

7 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a circuit board, and the circuit board has a U-shaped structure.

8 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a circuit board, the circuit board has a through hole and a circuit, and a portion of the circuit is exposed from the through hole.

9 . The optical member driving mechanism as claimed in claim 8 , wherein the driving assembly further comprises a coil, and the coil and the circuit are connected at the through hole by welding.

10 . The optical member driving mechanism as claimed in claim 9 , wherein the fixed portion comprises an opening, and the through hole is aligned with the opening.

11 . The optical member driving mechanism as claimed in claim 10 , wherein the optical member driving mechanism further comprises an adhesive member filled into the opening.

12 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a circuit board and a coil, and the circuit board and the coil are electrically connected to each other using surface-mount technology.

13 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a circuit board, the fixed portion comprises a housing having a C-shaped structure, and a side of the circuit board enters the notch of the C-shaped structure.

14 . The optical member driving mechanism as claimed in claim 11 , wherein the driving assembly comprises a circuit board, the fixed portion comprises a base having a first restricting portion and a second restricting portion, and the circuit board is clamped between the first restricting portion and the second restricting portion, wherein the distance between the first restricting portion and the movable portion is greater than the distance between the second restricting portion and the movable portion, and the second restricting portion has a chamfer or a fillet.

15 . The optical member driving mechanism as claimed in claim 2 , wherein the driving assembly comprises a coil, and the inside track of the coil has an asymmetric pattern.

16 . The optical member driving mechanism as claimed in claim 2 , wherein the optical member driving mechanism further comprises a plurality of damping members connected to the fixed portion and the movable portion, and the damping members are disposed on a side of the movable portion.

17 . The optical member driving mechanism as claimed in claim 16 , wherein the damping members are situated at the corners of the movable portion.

18 . The optical member driving mechanism as claimed in claim 2 , wherein the optical member driving mechanism further comprises a dark member, the fixed portion comprises a base, and the dark member is disposed on the base.

19 . The optical member driving mechanism as claimed in claim 18 , wherein the dark member extends to the position between the base and the optical member.

Assignees

• Tdk Taiwan Corp

Inventors

• Chen sheng-zong
• Tsai Sung-Mao
• Kuo Chen-Chi

Classifications

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• G03B2205/0053

  Driving means for the movement of one or more optical element · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G03B17/17

  with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera · 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