| 摘要 |
<p>An optical pickup device for reading signal pits on a disk 14 includes a light source (11), first and second diffraction devices (13, 16), a first holding member (20, 21; 26, 27) for holding a photosensor (10a) and a hollow second holding member (23, 25; 25, 29) for holding an object lens (18), wherein the first holding member (20, 21, 26, 27) may be rotated inside the second holding member (23, 25; 25, 29). It is therefore possible to adjust the alignment direction of three light spots (19a, 19b, 19c) projected on an optical disk (14).</p> |
