Illumination optical system

Details Illumination optical system Illumination optical system

1991-06-18

1992-02-25

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Step and repeat

355 46, 355 67, 355 68, 355 70, 355 77, G03B 2742

Patent

active

050917447

ABSTRACT:
An illumination optical system including a plurality of separate laser sources or a plurality of separate secondary light sources defined by the laser beams emerging from the laser sources. On an area to be illuminated, the laser beams emerging from the laser sources or emerging from the secondary light sources are superposed upon one another, whereby uniform exposure and an improved imaging performance are assured.

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patent: 4493555 (1985-01-01), Reynolds
patent: 4703166 (1987-10-01), Bruning
patent: 4773750 (1988-09-01), Bruning
patent: 4785192 (1988-11-01), Bruning
Article "Square Blue Laser" Popular Science May, 1983.

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