Illumination device for photographic color apparatus

Details Illumination device for photographic color apparatus Illumination device for photographic color apparatus

1978-01-30

1979-03-13

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 67, 355 88, G03B 2776

Patent

active

041439660

ABSTRACT:
An illuminating device for a color printing apparatus having color filters insertable at varying amounts into the printing light beam has a light-conducting shaft and a variable aperture diaphragm both of which have substantially rectangular cross sections whereby the color content of the printing light beam is maintained substantially uniform. The light-conducting shaft has the form of a frustum of a square pyramid and the variable aperture of the diaphragm has a rectangular form. The light source has an ellipsoidal reflector, and the light beam emerging from the illuminating device is channeled through a light mixer.

REFERENCES:
patent: 3217594 (1965-11-01), Simmon
patent: 3273451 (1966-09-01), Wilson
patent: 3684371 (1972-08-01), Weisglass et al.
patent: 3709601 (1973-01-01), Zahn et al.
patent: 3756719 (1973-09-01), Harter
patent: 3800070 (1974-03-01), Barbieri
patent: 3829210 (1974-08-01), Langer et al.
patent: 3831021 (1974-08-01), Muhlogger
patent: 4050807 (1977-09-01), Barbieri

Affiliated with

Also associated with

Rating

Illumination device for photographic color apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Illumination device for photographic color apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illumination device for photographic color apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2369306