Light exposure device including light diffusing and absorbing re

Details Light exposure device including light diffusing and absorbing re Light exposure device including light diffusing and absorbing re

1977-07-05

1978-12-05

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Illumination systems or details

G03B 2754

Patent

active

041283333

ABSTRACT:
A light exposure device including a telescoping housing which defines therein adjacently oriented light-diffusing and light-absorbing regions. The device's light source is located within the diffusing region while a light-transmitting platen is positioned immediately adjacent the absorbing region. The device is ideally suited for use within a portable reflex copier which utilizes a suitable photosensitive material.

REFERENCES:
patent: 3697177 (1972-10-01), Booth

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