Technique for monitoring galvo angle

Details Technique for monitoring galvo angle Technique for monitoring galvo angle

1981-12-21

1985-12-03

Richardson, Robert L.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

250201, 369121, 369101, G11B 700

Patent

active

045569649

ABSTRACT:
Disclosed is a radiant energy optoelectronic position monitor system which detects the angular position of a "galvonometer mirror" (beam scanner) used in an optical disk memory arrangement.

REFERENCES:
patent: 2237902 (1941-04-01), Dimmick
patent: 3720924 (1973-03-01), Aagard
patent: 3737877 (1973-06-01), Feinleib
patent: 4264809 (1981-04-01), Fearnside
patent: 4290122 (1981-09-01), Bates et al.
patent: 4330880 (1982-05-01), Van Dijk
patent: 4352984 (1982-10-01), Ohara
patent: 4363116 (1982-12-01), Kleuters et al.
Trethewey, `An Infra-Red Based Beam Scanner Position Sensor`, Wescon/81, 9/15-17/81, Region 6 IEEE Student Paper Competition.

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