Illumination device

Details Illumination device Illumination device

1977-07-08

1978-12-26

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

362 11, G03B 2754

Patent

active

041313615

ABSTRACT:
An illumination device used in the case of forming, on a dupe film, a visible copy of an image pattern of a master film. The illumination device comprises a light source including a center portion having a high brightness and a peripheral portion for emitting light in all directions, and a collimator lens having an optical axis that passes through the high brightness center portion of the light source.

REFERENCES:
patent: 3375361 (1968-03-01), Thompson et al.
patent: 3941475 (1976-03-01), Sheets

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