Light beam scanning device with constant spot intensity and scan

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350474, 350479, G02B 2717

Patent

active

043435319

ABSTRACT:
A light beam scanning device of a construction, in which an image forming scanning optical system is provided with an expedient for preventing spot intensity of a light beam on a scanning surface from falling off at a peripheral region of a scanning object in comparison with its center part, and a light beam modulator is provided with an expedient for making constant a length of a single dot drawn by a beam spot with respect to one modulating signal on the scanning surface.

REFERENCES:
patent: 3573849 (1971-04-01), Herriot et al.
patent: 3597536 (1971-08-01), Fowler
patent: 3848087 (1974-11-01), Carrell
patent: 3961838 (1976-06-01), Zanoni
patent: 4032888 (1977-06-01), Broyles et al.
patent: 4160939 (1979-07-01), Damouth et al.
patent: 4178064 (1979-12-01), Mrdjen

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