Actuator for reflector having moving frame with reflector and camera module including the same

1 . An actuator for a reflector, comprising:

a moving frame having a reflector configured to reflect light to a lens, and a magnet;

a base frame configured to provide a moving space for the moving frame;

a driving coil configured to generate a magnetic force at the magnet so that the moving frame rotates based on the base frame;

a guide rail formed at any one of the moving frame and the base frame and having a rounded shape;

a holder provided to any one of the moving frame and the base frame not provided with the guide rail, provided in a direction facing the guide rail, and having a groove shape; and

a ball arranged between the guide rail and the holder, and

wherein the moving frame rotates along a path corresponding to the guide rail.

2 . The actuator for a reflector according to claim 1 ,

wherein the holder includes a plurality of holders arranged side by side to correspond to a longitudinal direction of the guide rail, and

wherein the ball is arranged at each of the plurality of holders.

3 . The actuator for a reflector according to claim 2 ,

wherein the plurality of holders are spaced apart from the guide rail by the same distance based on the direction facing the guide rail.

4 . The actuator for a reflector according to claim 1 ,

wherein an inner surface of the holder includes at least one plane that makes a point contact with the ball.

5 . The actuator for a reflector according to claim 4 ,

wherein the plane has a shape that becomes narrower inward.

6 . The actuator for a reflector according to claim 1 , further comprising:

a yoke provided to the base frame to generate an attractive force at the magnet,

wherein a center of a portion of the yoke facing the magnet coincides with a center of the magnet.

7 . A camera module, comprising the actuator for a reflector according to claim 1 .