Totally magnetic fine tracking miniature galvanometer actuator

Details Totally magnetic fine tracking miniature galvanometer actuator Totally magnetic fine tracking miniature galvanometer actuator

1990-03-15

1993-09-07

Chin, Tommy

Electrical generator or motor structure

Dynamoelectric

Oscillating

310156, 310 68R, 310181, 310154, 335272, 335222, H02K 117, H02K 1600

Patent

active

052432416

ABSTRACT:
A fine tracking miniature galvanometer actuator is used as a fine tracking positioner for a read/write head in the optical disk drive of an information storage and/or retrieval system. An efficient magnetic circuit is used in conjunction with a small and lightweight rotor design which offers high performance characteristics in terms of frequency response and sensitivity. No mechanical springs or torsion bars are necessary to maintain the rotor in a neutral or zero position. The present invention is also useful in other systems using electro-optical transducers including reflecting-type galvanometer recording systems used for producing variable-area sound tracks .

REFERENCES:
patent: 4587971 (1986-05-01), Stolfi et al.
patent: 4620139 (1986-10-01), Egami et al.
patent: 4650307 (1987-03-01), Capobianco et al.
patent: 4775812 (1988-10-01), Kitamori
patent: 4856858 (1989-08-01), Koike et al.
patent: 4942562 (1990-07-01), Suzuki
patent: 4945330 (1990-07-01), Arita
patent: 4972112 (1990-11-01), Kim

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