Apparatus for driving optical-reflector
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.
1. An apparatus for driving an optical-reflector, comprising:
a lens;
a support frame having a groove line formed therein, wherein the groove line has a round shape and is independently disposed in front of the lens with respect to an optical axis;
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 the 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 rotate the support frame along a path corresponding to the groove line or the guiding groove, wherein the driving unit includes:
an OIS magnet provided at a side of the support frame at which the optical-reflector is not provided; wherein the groove line is respectively formed at both sides of the OIS magnet; and
a coil disposed at the base frame, to generate an electromagnetic force to the OIS magnet.
2. The apparatus for driving an optical-reflector of claim 1 , wherein the groove line and the guiding groove have curvatures corresponding to each other.
3. The apparatus for driving an optical-reflector of claim 1 , further comprising:
a yoke configured to generate an attractive force to the OIS magnet.
4. The apparatus for driving an optical-reflector of claim 1 , 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.