| 摘要 |
PCT No. PCT/JP97/01573 Sec. 371 Date Jan. 9, 1998 Sec. 102(e) Date Jan. 9, 1998 PCT Filed May 9, 1997 PCT Pub. No. WO97/42632 PCT Pub. Date Nov. 13, 1997A disc player provided with an optical pick-up including plural object lens so that write and read operations of information signals can be carried out with respect to plural kinds of discs in which thicknesses of transparent bases are different from each other. In order that tracking error signal can be satisfactorily detected even in the case where either one of object lenses is used, a biaxial actuator 3 for supporting an object lens 5 moved on a line which is off the central axis C of a spindle motor 17 is disposed in a manner inclined by a predetermined angle theta with respect to the axis of a guide shaft 18, and movement operation direction of the object lens 5 is caused to be close to the direction perpendicular to recording tracks of the optical disc caused to undergo rotational operation by the spindle motor 17.
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