| 摘要 |
PURPOSE: An optical pickup driving method is provided to eliminate a sensor for detecting a location of a collimate lens for compensating for spherical aberration and drive the collimate lens. CONSTITUTION: A spherical aberration compensating lens moves until the spherical aberration compensating lens stops moving due to a wall of a plate spring shape. A location where a lens(103) stops moving is set as a reference location. When the lens moves to the reference location, the actuator is operated at speed faster than normal operating speed. When power is supplied to an optical disk device with the optical pickup, the lens moves to the reference location. The lens is moved to a parking location.
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