Optical pickup device

Details Optical pickup device Optical pickup device

G - Physics

11

B

88/122

G11B 7/08 (2006.01) G11B 7/09 (2006.01) G11B 7/12 (2006.01)

Patent

CA 1268369

ABSTRACT OF THE DISCLOSURE An optical pickup device comprising an objective lens having an optic axis for focusing a light beam emitted from a light source on an optical recording medium, The objective lens is carried on a support member which is coupled with a base through a coupling unit. The coupling unit has a first rotation axis parallel to the optic axis for permitting rotation of the support member about the first rotation axis in a tracking direction perpendicular to the optic axis and a second rotation axis perpendicular to the optic axis for permitting rotation of the support member about the second rotation axis in a focusing direction parallel to the optic axis. The support member has a center of gravity positioned substantially on the first rotation axis. A light beam reflected from the optical recording medium is sensed for exerting a force on the support member to move the objective lens in the focusing and/or tracking directions so as to adjust the optic axis to a desired position.

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