Patent ID: 6181670
Filing Date: 2001-01-30
Classification: G11B

Abstract:
An objective lens support device used in correcting a position of an objective lens in a focusing direction and in a tracking direction and further correcting a position of the objective lens in at least one of a tangential tilt direction and a radial tilt direction, the objective lens support device comprising:a lens holder constructed and arranged to hold the objective lens;a pair of support members supporting said lens holder; anda support block supporting the pair of support members;the pair of support members being disposed in a plane substantially perpendicular to an optical axis of the objective lens,each of the pair of support members having a first part and a second part, the first part having a first end and a second end connected to the lens holder, the second part having a first end connected the first end of the first part and a second end connected to the support block,the rotary rigidity of the first part in the tangential tilt direction being smaller than the rotary rigidity of the second part in the tangential tilt direction.