| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical pickup device which can adjust a beam spot spacing according to predetermined track pitch after fixing diffraction-grating to a slide base, etc. to raise sensitivity of a tracking error signal. <P>SOLUTION: The optical pickup device is provided with a base member 22 to which an optical system which makes an information recording face of an optical disk 50 irradiated with an optical beam for recording and/or reproducing of an information signal is attached; and a cover member 23 which can be attached movably to a disk drive unit 80, while to which the base member 22 can be attached rotatably. In the base member 22, a reference hole 51 which is to be made a center of rotation for the cover member 23 and a fixing screw 70 which can attach the base member 22 to the cover member 23 are arranged. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
