| 摘要 |
The invention discloses a system and method for adjusting the servo controls by monitoring the spot status projected upon the photo detector of an optical pickup head. By utilizing a beam splitting device, the present invention splits the reflected laser beam which projects to photo detector originally into two reflected laser beams, in which a first reflected laser beam still projects to the photo detector for generating the servo control signals, and a second reflected laser beam projects to an image sensor for obtaining the beam profile of reflected laser beam as the servo control still works normally. By reference to analyze the obtained beam profile, the characteristics of the optical pickup head system would be more realized and be helpful for adjusting the optical servo control system.
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