Light intensity control for light beam recorder

Details Light intensity control for light beam recorder Light intensity control for light beam recorder

1988-08-15

1990-06-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250235, G01J 132

Patent

active

049356151

ABSTRACT:
A beam recorder comprises a beam generator, a deflector for deflecting the beam to scan the beam, and a light intensity control unit for controlling a light intensity of the beam. The deflection has a plurality of deflection planes to which the beam is directed, and at least one of the deflection planes in a non-scan plane. The light intensity control is effected by utilizing a period in which the beam is directed to the non-scan plane.

REFERENCES:
patent: 2476503 (1949-07-01), Maytum
patent: 3287559 (1966-11-01), Barnes
patent: 3804485 (1974-04-01), Clarke
patent: 3944323 (1976-03-01), Starkweather
patent: 4070681 (1978-01-01), Ichikawa et al.
patent: 4443695 (1984-04-01), Kitamura
patent: 4695714 (1987-09-01), Kimizuka et al.

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