Optical unit with shake correction function

Patent metadata

Field	Value
Publication number	US-11573430-B2
Application number	US-202117543734-A
Country	US
Kind code	B2
Filing date	Dec 7, 2021
Priority date	Dec 17, 2020
Publication date	Feb 7, 2023
Grant date	Feb 7, 2023

Abstract

An optical unit with a shake correction function includes a reflection member reflecting light entering from the outside, a movable body turnably holding the reflection member, a fixed body turnably holding the movable body, a drive mechanism structured to turn the reflection member with respect to the movable body and turn the movable body with respect to the fixed body, and a turning axis part structuring a turning center of the movable body with respect to the fixed body. The movable body is capable of turning with respect to the fixed body with a first direction as an axial direction of turning, and the turning axis part includes a first ball disposed on one side of the movable body, a second ball disposed on the other side of the movable body and contacted with the fixed body, and an urging member which urges the first ball toward the second ball.

First claim

What is claimed is:

1. An optical unit with a shake correction function comprising:
a reflection member formed with a reflection surface which reflects light entering from outside;
a movable body which turnably holds the reflection member;
a fixed body which turnably holds the movable body;
a drive mechanism structured to turn the reflection member with respect to the movable body and turn the movable body with respect to the fixed body; and
a turning axis part which structures a turning center of the movable body with respect to the fixed body;
wherein the movable body is capable of turning with respect to the fixed body with a first direction previously determined as an axial direction of turning; and
wherein the turning axis part comprises:
a first ball in a spherical shape which is disposed on one side of the movable body in the first direction;
a second ball in a spherical shape which is disposed on an other side of the movable body in the first direction and is contacted with the fixed body; and
an urging member which urges the first ball toward the second ball.

2. The optical unit with a shake correction function according to claim 1 , wherein
the first ball is fixed to the urging member,
the second ball is fixed to the fixed body, and
the turning axis part comprises:
a first receiving part which is formed with a receiving face in a concave curved face shape contacted with the first ball and is attached to the movable body; and
a second receiving part which is formed with a receiving face in a concave curved face shape contacted with the second ball and is attached to the movable body.

3. The optical unit with a shake correction function according to claim 2 , wherein
the movable body is formed of resin material,
each of the first ball and the second ball is formed of metal material, and
each of the first receiving part and the second receiving part is formed of metal material.

4. The optical unit with a shake correction function according to claim 3 , wherein
the turning axis part comprises a receiving member structured of the first receiving part, the second receiving part, and a connecting part in a flat plate shape connecting the first receiving part and the second receiving part, and
the movable body is formed with:
a first contact face in a flat face shape which is contacted with the connecting part;
a second contact face which is contacted with the first receiving part; and
a third contact face which is contacted with the second receiving part.

5. The optical unit with a shake correction function according to claim 2 , wherein
the turning axis part comprises a receiving member structured of the first receiving part, the second receiving part, and a connecting part in a flat plate shape connecting the first receiving part and the second receiving part, and
the movable body is formed with:
a first contact face in a flat face shape which is contacted with the connecting part;
a second contact face which is contacted with the first receiving part; and
a third contact face which is contacted with the second receiving part.

6. The optical unit with a shake correction function according to claim 1 , wherein
the first ball and the second ball are fixed to the movable body,
the urging member is formed with a receiving face in a concave curved face shape which is contacted with the first ball, and
the fixed body comprises a receiving member formed with a receiving face in a concave curved face shape which is contacted with the second ball.

Assignees

• Nidec Sankyo Corp

Inventors

• Sue Takeshi
• Kasahara Shogo

Classifications

• G03B5/00 Primary

  Adjustment of optical system relative to image or object surface other than for focusing · CPC title

• G02B7/1828

  using magnetic means · CPC title

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• G03B17/12

  with means for supporting objectives, supplementary lenses, filters, masks, or turrets · CPC title

• 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