Light scanning device

Details Light scanning device Light scanning device

1976-12-02

1978-07-25

Mullins, James B.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250563, H01J 314

Patent

active

041031563

ABSTRACT:
A scanning device for deflecting a light beam, said device being constructed with a deflector such as, for example, a rotatory polygonal mirror, which causes a light incidence position on the deflecting and reflecting surface thereof to shift in accordance with the deflecting action of the deflector, a detector for detecting when the light incidence position is at a corner part of the deflecting and a reflecting surface, and light interceptor operable in accordance with a detection signal from the abovementioned detector, when the light incidence position reaches the corner part of the deflecting and reflecting surface, to interrupt incidence of the light beam onto the deflecting and reflecting surface.

REFERENCES:
patent: 3692414 (1972-09-01), Hosterman et al.

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