DEVICE FOR DRIVING OBJECTIVE LENS OF OPTICAL PICKUP

摘要

PURPOSE: A device for driving an objective lens of an optical pickup is provided to drive the objective lens in focusing/tracking and tilting directions rapidly and minutely, to correctly adjust a focus of the objective lens to a pit. CONSTITUTION: Operating members(102,102a) connected with a lens holder(101) fixing and supporting an objective lens(101a) have piezos(200) that are displaced by an electric potential difference, to drive the objective lens(10a) in focusing and tilting directions. Tracking driving units(103,103a) connected with the operating members(102,102a) have plate-shaped piezos(300) that are displaced by an electric potential difference, to drive the objective lens(101a) in a tracking direction. Driving members(105) connected to each tracking driving unit(103,103a) deliver a driving force of the tracking driving unit(103,103a) to the objective lens(101a). And a connection member(104) connected with the driving members(105) is located between the operating members(102,102a) to deliver a tracking driving force of the driving members(105) to the objective lens(101a).