Integrator for analyzing the spectral content of printing illumi

Details Integrator for analyzing the spectral content of printing illumi Integrator for analyzing the spectral content of printing illumi

1982-02-17

1985-01-22

Evans, F. L.

Optics: measuring and testing

By shade or color

Photography

355 38, G01J 350

Patent

active

044948760

ABSTRACT:
An integrator for spectral analysis of printing illumination from photographic film including a lens for collimating the printing illumination into a beam. The integrator includes first and second color separation filters which divert respective colors from the beam. First and second phototransducers are provided for receiving the respective colors. A third phototransducer receives the beam passing through the first and second filters. Each phototransducer produces a signal representative of the intensity of the respective color.

REFERENCES:
patent: 3359851 (1967-12-01), Lipschutz et al.
patent: 3418048 (1968-12-01), Veit
patent: 3507574 (1970-04-01), Crete
patent: 3601485 (1971-08-01), Barbieri
patent: 4050808 (1977-09-01), Gyori
patent: 4068943 (1978-01-01), Gyori
patent: 4124292 (1978-11-01), Van Wandelen
patent: 4214171 (1980-07-01), Gyori
patent: 4371259 (1983-02-01), Howitt

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