Actuator for an optical pickup

Details Actuator for an optical pickup Actuator for an optical pickup

2006-06-13

2006-06-13

Castro, Angel (Department: 2653)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

C369S044220

Reexamination Certificate

active

07062775

ABSTRACT:
A magnet used for an actuator of an optical pickup has a magnetization pattern with two different pole areas adjacent each other. At a corner part defined by the boundary line of the two pole areas, the pole area inside the corner part has a projection area, projecting in the direction of the pole area outside the corner part. Owing to the existence of the projection area, insufficiency of the magnetic flux density at the corner part particularly close to the vertex can be improved so that a desirable magnetic field can be provided to the printed coil substrate disposed in the vicinity of the magnet.

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patent: 11-185265 (1999-07-01), None

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