Patent ID: 7627877
Filing Date: 2009-12-01
Classification: G11B

Abstract:
1. An objective lens actuator, comprising: a lens holder configured for receiving an objective lens; a first micro-actuator connected to the lens holder, the first micro-actuator being configured for driving the objective lens substantially along a radial direction of an optical disk; and a second micro-actuator connected to the lens holder, the second micro-actuator being configured for driving the objective lens along a direction substantially perpendicular to the optical disk; wherein the first and second micro-actuators each comprise at least one inactive portion and at least one active portion, the at least one active portion is movably received in the corresponding at least one inactive portion; the at least one inactive portion is comb-shaped with a plurality of slots therein, and the at least one active portion includes a shaft and a plurality of comb fingers extending from a circumference of the shaft.