Patent ID: 6501710
Filing Date: 2002-12-31
Classification: G11B

Abstract:
An optical storage device capable of at least reading information recorded on an optical storage medium, comprising:an actuator base for movably supporting a movable portion holding an objective lens for focusing a light beam onto said optical storage medium; a fixing portion for fixing said actuator base; a lens actuator for driving said objective lens to displace said objective lens at least in a focusing direction, said lens actuator including a coil provided on one of said movable portion and said fixing portion and a magnetic circuit provided on the other of said movable portion and said fixing portion; and said actuator base being fixed to said fixing portion in the condition that a relative position between said coil and said magnetic circuit in a given direction is set so as to minimize the tilt of the optical axis of said objective lens in said given direction occurring in displacing said objective lens in said focusing direction.