| 摘要 |
Disclosed is an optical head device including: an object lens; an actuator displacing the optical lens; a mirror which has a reflection plane to bend a direction of a light traveling on an optical axis of the object lens, and on a back of the reflection plane, a rear surface substantially parallel to the refection plane; and an optical base which has openings for incorporating the actuator and the mirror and which has a beam at a position opposed to the rear surface of the mirror.
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