Optical head supporting apparatus

Details Optical head supporting apparatus Optical head supporting apparatus

1989-09-28

1992-06-23

Envall, Jr., Roy N.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4414, 369 4415, 359813, 359824, G11B 708

Patent

active

051249650

ABSTRACT:
An optical head and supporting apparatus has an optical head for irradiating a parallel beam in a direction perpendicular to a recording surface of an optical disk, an objective lens rigidly mounted on the optical head for receiving the parallel beam from the optical head, tracking drive coils for driving the optical head over the whole recording range in a first direction transverse to the recording tracks of the optical disk, focusing drive coils for driving the optical head in a second direction perpendicular to the recording surface of the optical disk, and a support mechanism made of wire-shaped elastic bodies for supporting the optical head freely movably in the first and second directions over the whole recording range in the first direction of the optical head. The support mechanism is fixedly mounted through elastic bodies on a part of a structural body independent of movement of the optical head. Seek, tracking and focusing movements of a beam spot can be achieved in such a way that the wire-shaped eleastic bodies are elastically deformed by forces developed through the tracking drive coils and focusing drive coils thereby to move the optical head two-dimensionally.

REFERENCES:
patent: 4592037 (1986-05-01), Ohnuki
patent: 4842392 (1989-06-01), Nakamura et al.
patent: 4878214 (1989-10-01), Hinotani

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