OPTICAL PICKUP DEVICE

摘要

An optical pickup device is one in which a lens holder is held by a movable base by using a resilient wire. A restricting abutting portion is formed at a lower portion of the lens holder. When the lens holder moves excessively downward, the restricting abutting portion comes into contact with a stopper portion to restrict a downward movement of the lens holder, so that it is possible to prevent the lens holder from contacting a unit chassis. When the unit chassis is not mounted on the movable base, it is possible to prevent excessive flexing of the resilient wire caused when an opposing abutting portion of the lens holder comes into contact with the unit chassis.

主权项

1. An optical pickup device comprising:
a movable base; and a lens driving unit that is supported by the movable base, wherein the lens driving unit includes a unit chassis, a lens holder, a resilient supporting member, and a focus correcting mechanism, the lens holder, the resilient supporting member, and the focus correcting mechanism being provided at the unit chassis, the lens holder holding an objective lens that opposes a recording medium, the resilient supporting member supporting the lens holder, the focus correcting mechanism moving the lens holder in a direction of an optical axis of the objective lens, wherein the lens holder includes a restricting abutting portion and an opposing abutting portion, wherein, when the lens holder moves in a direction away from the recording medium, the restricting abutting portion comes into contact with the movable base to restrict further movement of the lens holder, and wherein, when the lens holder moves in the direction away from the recording medium, the opposing abutting portion moves closer to the unit chassis, and, when the restricting abutting portion comes into contact with the movable base, the opposing abutting portion opposes the unit chassis with a gap between the opposing abutting portion and the unit chassis.