Light quantity control device

Details Light quantity control device Light quantity control device

1990-09-26

1992-09-29

Epps, Georgia Y.

Coherent light generators

Particular beam control device

Optical output stabilization

372 29, 372 38, H01S 313

Patent

active

051519100

ABSTRACT:
A light quantity control device suitable for use in a laser beam printer includes a beam generator, a monitor for monitoring the quantity of light of a beam generated by the beam generator, and a controller. The controller controls the light quantity of the beam generated by the beam generator in response to the output of the monitor. The controller includes a digital value output circuit and a light quantity control circuit. The digital value output circuit outputs a digital value representing the quantity of light of the beam, and the light quantity control circuit controls the quantity of light in response to the digital value. The digital value output circuit varies the timing of output of the digital value in accordance with the output of the monitor.

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