Color image exposure apparatus

Details Color image exposure apparatus Color image exposure apparatus

1989-01-13

1990-02-27

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

G03B 2772, G03B 2776

Patent

active

049050397

ABSTRACT:
A color image exposure apparatus with improved color reproducibility is disclosed. The improved color reproducibility has been achieved by using for exposure only those rays having a substantially uniform angle distribution relative to an optical axis. In order to perform exposure by the above rays, rays substantially parallel to the optical axis are caused to enter a filter coated with a dielectric multilayer film or, as an alternative, rays substantially parallel to the optical axis only are chosen from rays emitted through the filter. Since rays near an enlarging master lens are substantially parallel to the optical axis, an optical member coated with a dielectric multilayer film may be arranged in the vicinity of the master lens.

REFERENCES:
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patent: 3923394 (1975-12-01), Frankiewicz
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patent: 4129372 (1978-12-01), Allgeier
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patent: 4505569 (1985-03-01), Seto et al.
patent: 4522485 (1985-06-01), Kamiya et al.
patent: 4809198 (1989-02-01), Terashita

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