| 摘要 |
PURPOSE:To allow the absorption of the angle errors in the moving direction of an optical head with the mere adjustment of a moving mirror driving part by providing a correcting mechanism for moving a supporting base in a specific direction. CONSTITUTION:An objective lens 3 is provided in the optical head H and a mirror facing the direction of an optical path A direction positioned below this lens is provided. A semiconductor laser 4, pin photodiodes 10a, 10b, beam splitters 6, 8, etc., are provided in a stationary part S. Also the moving mirror 7 and the mirror driving part for driving this mirror are provided. The moving mirror 7 is moved in the direction to incline the reflecting optical path of this mirror and in the direction where the relative facing positions of the moving mirror 7 and the mirror of the optical head H are changed by moving the driving part of the moving mirror 7. The angle errors between the optical path A and the moving direction of the optical head H are corrected simply by changing the position of the driving part of the moving mirror 7 in this way. |
