Method of controlling the quantity of light in a selected range

Details Method of controlling the quantity of light in a selected range Method of controlling the quantity of light in a selected range

1989-03-13

1990-03-06

Sikes, William L.

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, H01S 313

Patent

active

049072366

ABSTRACT:
The intensity of a laser beam used for writing on a photosensitive surface is controlled to keep it at a selected level between upper and lower detected intensity levels regardless of differences in the driving current versus light output characteristics due to aging and due to manufacturing tolerances as between different lasers.

REFERENCES:
patent: 4745609 (1988-05-01), Yoshikawa
patent: 4817098 (1989-03-01), Horikawa

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