Sony Corporation

Hidetoshi Tanaka

Hiroshi Kawamura

Yuji Shishido

An objective lens drive device () includes a supporting block (), a movable block () for holding an objective lens (), and supporting springs () for connecting the supporting block and the movable block. Elements of the supporting block of the objective lens drive device () are a stationary section (), a supporting shaft (), a tilt drive section (), and tilt drive magnetic circuits (and). The stationary section () is secured to a movable base () that is movable in radial directions of a disc-shaped recording medium (). An axial direction of the supporting shaft () is perpendicular to both focusing directions and tracking directions. The tilt drive section () is rotatably supported at the stationary section through the supporting shaft and is connected to the movable block through the supporting springs. The tilt drive magnetic circuits (and) are used to rotate the tilt drive section with respect to the stationary section.

Optical pickup and disc drive apparatus

An optical pick-up device adapted for irradiating light beams onto an optical disc to carry out recording or reproduction of information signals with respect to the optical disc. A movable portion in which coils for drive are provided at a lens holder of synthetic resin which holds an object lens is displaceably supported at a fixing portion including magnets opposite to the drive coils through suspensions doubling as electric current supply medium from an external circuit. At the lens holder, there are provided conductive portions formed by the resin plating method. End portions of the drive coils and one ends of the suspensions are soldered to the conductive portions, thus to carry out mechanical supporting with respect to the fixing portion of the movable portion and electric connection with respect to the external circuit of the drive coils.

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Chiba, Japan

Hidetoshi Tanaka