Light beam scanning device

Details Light beam scanning device Light beam scanning device

1983-05-25

1986-03-25

Corbin, John K.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237R, 350 61, 358264, 358293, H01J 314

Patent

active

045785775

ABSTRACT:
A light beam scanning reticle having a grid pattern with transparent portions and opaque portions alternately arranged in a light beam deflection direction and having a variable period in a direction perpendicular to the deflection direction. The grid pattern is movable in the deflection direction, and irregularity in the speed of scanning a light spot on a scanning plane is corrected with a photo-electric signal which is provided through the grid pattern.

REFERENCES:
patent: 4429220 (1984-01-01), Noguchi
patent: 4449046 (1984-05-01), Zuckerman et al.

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