Scan mirror position determining system

Details Scan mirror position determining system Scan mirror position determining system

1977-06-22

1978-11-28

Tokar, M.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250212, 250230, G01N 2132

Patent

active

041277813

ABSTRACT:
A scanning mirror position sensor operable from the back side of a scanning mirror which utilizes the front side of the mirror for scanning a scene to be interrogated or displayed. A rectangular uniformly distributed light source is reflected from the back surface of the scanning mirror across a plurality of parallel photo voltaic diode structure bars which may have a gray coded aluminum mask thereon. The outputs of the diode structure bars energized through openings in the aluminum mask may energize sense amplifiers and output logic to provide a continual and accurate mirror position value.

REFERENCES:
patent: 3310439 (1967-03-01), Seney
patent: 3335367 (1967-08-01), Skooglund et al.
patent: 3364358 (1968-01-01), Ashworth
patent: 3555285 (1971-01-01), Irving
patent: 3911469 (1975-10-01), Wrobel

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