Light beam intensity stabilizing method

Details Light beam intensity stabilizing method Light beam intensity stabilizing method

1980-06-13

1983-01-11

Sikes, William L.

H04B 900

Patent

active

043679269

ABSTRACT:
A method for stabilizing the intensity of a light beam emitted by a light source and deflected by an acoustooptical deflector element which is controlled by a control signal and is arranged in a scanning exposure head, without regard to deflection angles, wherein a detected light beam intensity is compared with a predetermined reference light intensity. The difference between the light beam intensity and the reference light intensity is detected, and wherein the control signal corresponding to the detected difference is controlled by a stored correction signal which is read out of a memory, so that the intensity of the light beam through the acoustooptical deflector element may be maintained at a certain level.

REFERENCES:
patent: 3727062 (1973-04-01), Foster
patent: 4164717 (1979-08-01), Blazey

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