Linear pickup actuator for moving an optical pickup in a radial

Details Linear pickup actuator for moving an optical pickup in a radial Linear pickup actuator for moving an optical pickup in a radial

1990-05-08

1991-08-27

Levy, Stuart S.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4422, 369 4432, 369215, 369219, G11B 700, G11B 1730, G11B 2102

Patent

active

050439642

ABSTRACT:
A pickup actuator includes a slider, an optical pickup unit, and at least one suspension arm extending from the slider for suspending the pickup unit. The pickup unit includes at least one bobbin surrounding a yoke plate, upon which a first coil is wound, and further transversely mounted coils attached to the first coil. The coils collectively control movement of the pickup unit in tracking, focusing and tilt directions thereof. A further bobbin connected to the slider surrounds the yoke plate and includes a further coil wound thereabout for driving the slider and the pickup unit radially of an associated optical disk.

REFERENCES:
patent: 4443721 (1984-04-01), Jansen
patent: 4547871 (1985-10-01), Sugiyama et al.
patent: 4570249 (1986-02-01), Melissin et al.
patent: 4583212 (1986-04-01), Koida et al.
patent: 4592037 (1986-05-01), Ohnuki
patent: 4766583 (1988-08-01), Oinoue et al.
patent: 4794580 (1988-12-01), Ikedo et al.
patent: 4823336 (1989-04-01), Inada et al.
patent: 4861138 (1989-08-01), Suzuki
patent: 4878214 (1989-10-01), Hinotani
patent: 4942562 (1990-07-01), Suzuki

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