Apparatus for driving optical-reflector

Patent metadata

Field	Value
Publication number	US-2018095293-A1
Application number	US-201715476179-A
Country	US
Kind code	A1
Filing date	Mar 31, 2017
Priority date	Oct 5, 2016
Publication date	Apr 5, 2018
Grant date	—

Abstract

An apparatus for driving an optical-reflector includes a support frame having a groove line formed therein, an optical-reflector installed at the support frame to change a path of light input through an opening so that the light is put into a lens, a base frame having a guiding groove formed with a shape corresponding to the groove line, and a plurality of balls disposed between the groove line and the guiding groove so that the support frame and the base frame are kept in a spaced state, and a driving unit configured to move the support frame along a path corresponding to the groove line or the guiding groove.

First claim

What is claimed is:

1 . An apparatus for driving an optical-reflector, comprising:
a support frame having a groove line formed therein; an optical-reflector installed at the support frame to change a path of light input through an opening so that the light is put into a lens; a base frame having a guiding groove formed with a shape corresponding to the groove line; a plurality of balls disposed between the groove line and the guiding groove so that the support frame and the base frame are kept in a spaced state; and a driving unit configured to move the support frame along a path corresponding to the groove line or the guiding groove.

2 . The apparatus for driving an optical-reflector of claim 1 , wherein the groove line has a rounded shape; and
the support frame rotates along a path corresponding to the groove line or the guiding groove.

3 . The apparatus for driving an optical-reflector of claim 2 , wherein the groove line and the guiding groove have curvatures corresponding to each other.

4 . The apparatus for driving an optical-reflector of claim 1 , wherein the driving unit includes:
an OIS magnet disposed at any one of the support frame and the base frame; and a coil disposed at the other one of the support frame and the base frame where the OIS magnet is not disposed, to generate an electromagnetic force to the OIS magnet.

5 . The apparatus for driving an optical-reflector of claim 4 , further comprising:
a yoke configured to generate an attractive force to the OIS magnet.

6 . The apparatus for driving an optical-reflector of claim 4 , wherein the OIS magnet is provided at a side of the support frame at which the optical-reflector is not provided; and
the groove line is respectively formed at both sides of the OIS magnet.

7 . The apparatus for driving an optical-reflector of claim 6 , further comprising:
a sensing magnet provided at a location spaced apart from the OIS magnet in a direction from the OIS magnet toward the zoom lens; and a hall sensor provided at a location corresponding to the sensing magnet.

8 . An apparatus for driving an optical-reflector, comprising:
an optical-reflector having a groove line formed therein to allow light input through an opening to be put into a lens; a base frame having a guiding groove formed with a shape corresponding to the groove line; a plurality of balls disposed between the groove line and the guiding groove so that the optical-reflector and the base frame are kept in a spaced state; and a driving unit configured to move the optical-reflector along a path corresponding to the groove line or the guiding groove.

9 . The apparatus for driving an optical-reflector of claim 8 , wherein the driving unit includes:
an OIS magnet disposed at any one of the optical-reflector and the base frame; and a coil disposed at the other one of the optical-reflector and the base frame where the OIS magnet is not disposed, to generate an electromagnetic force to the OIS magnet.

10 . The apparatus for driving an optical-reflector of claim 8 , wherein the groove line has a rounded shape; and
the optical-reflector rotates along a path corresponding to the groove line or the guiding groove.

Assignees

• Jahwa Electronics Co Ltd

Inventors

• Yeon Je Seung
• Lee Byung Cheol
• Kang Byung Kill
• Park Chul Soon

Classifications

• H04N23/685

  performed by mechanical compensation · CPC title

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• G02B27/646 Primary

  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

• H02P6/006

  Controlling linear motors · CPC title

• H02K33/16

  with polarised armatures moving in alternate directions by reversal or energisation of a single coil system · CPC title