Patent ID: 6625091
Filing Date: 2003-09-23
Classification: G11B

Abstract:
An optical pickup comprising:an actuator having a holder supporting portion for movably supporting a lens holder with an objective lens via a supporting member, a base member for mounting said holding supporting portion thereon, and an electromagnetic driving section for driving said lens holder in at least the focusing direction; and an optical chassis for mounting said base member thereon and having a light-emitting element for emitting a light beam to a disc via said objective lens and a light receiving element for receiving the feedback light beam from said disc, wherein said base member has a through hole formed at a position opposing the bottom surface of said lens holder and having such a size that said lens holder can be loosely fitted therein, and said optical chassis has a stopper portion opposing the bottom surface of said lens holder via said through hole so as to regulate the allowable amount of movement of said lens holder toward the side opposite from said disc in the focusing direction.