Patent ID: 6496467
Filing Date: 2002-12-17
Classification: G11B

Abstract:
An optical pick-up for recording and reading information to/from an optical disk, said optical pick-up comprising:a light source for emitting a light beam, a floating objective lens for focusing the light beam, a galvano-mirror which is located adjacent to the floating objective lens for directing the light beam toward the objective lens, and which is rockable for tracking control, and a photodetector for detecting return light from the optical disk, wherein the galvano-mirror comprises a micromachine mirror and a drive system which are capable of being manufactured as a compact structure by a semiconductor manufacturing technique, and wherein the micromachine mirror comprises a rockable mirror portion, a U-shaped frame at least partially surrounding the mirror portion, and a pair of torsion bars coupling the mirror portion to the U-shaped frame for rocking motion.