| 摘要 |
<p>The invention relates to an optical pickup device for recording and reproducing information using holography while preventing the degradation of recording and reproduction accuracy due to external vibrations and changes in position relative to the recording media. An optical pickup device (11) uses a positioning device for adjusting the position of a pickup body (12) to correct the deviation of the relative position between the pickup body (12) and an optical information recording medium (1). The positioning device varies the position of the pickup body (12) in the directions perpendicular and parallel to the surface of the optical information recording medium (1) and also varies the angle of the pickup body (12) to the surface of the recording medium.</p> |
