Patent ID: 6351445
Filing Date: 2002-02-26
Classification: G11B

Abstract:
An optical pickup device, comprising:an optical system including an objective lens; an objective lens drive including a holder to support the objective lens, a member to support the lens holder movably in a first direction parallel to the optical axis of the objective lens and a second direction perpendicular to the optical axis of the objective lens, and means for driving to move the lens holder in the first and second directions; and a sliding base supporting the optical system and objective lens drive; the sliding base being supported over first and second guide shafts disposed in parallel to each other and having a plurality of main bearings supported on the first guide shaft and an auxiliary bearing supported on the second guide shaft; and the auxiliary bearing being disposed to have a fulcrum thereof positioned on a straight line connecting a middle point of a segment connecting fulcrums of the plurality of main bearings positioned at opposite axial ends of the first guide shaft and the center of gravity of the sliding base supporting the optical system and objective lens drive thereon.