| 摘要 |
<p>An optical head unit includes a motor (31, 31A) including a stator (51) and a rotor (32) which is rotatably provided on the stator, where at least the rotor has a generally circular or polygonal surface, and an optical system provided on the surface of the rotor of the motor. The optical system includes a light emitting part (60) for emitting light, a focus actuator (34), an objective lens (33) provided on the focus actuator, and a light receiving part (64, 65). The light emitted from the light emitting part is output via the objective lens, and light received via the objective lens is received by the light receiving part. <IMAGE></p> |
