Color meter

Details Color meter Color meter

1980-11-25

1983-06-21

Evans, F. L.

Optics: measuring and testing

By shade or color

Photography

356406, 364526, G01J 350

Patent

active

043891187

ABSTRACT:
A color meter for measuring the respective intensity of the blue, green and red regions of an illuminating light source to provide the photographic information according to the measured value. The present invention provides an appliance, which directly provides, as the final output, the light balancing factor or the color compensating factor according to the necessary one from among the measured informations of the light intensity of each region of blue, green, red and an information determined according to using film, video image pickup tube, solid image pickup element, etc. and of which the operation is simple and the correcting filter can be simply and quickly determined.

REFERENCES:
patent: 2917969 (1959-12-01), Stimm
patent: 3180209 (1965-04-01), Crandell
patent: 3452658 (1969-07-01), Krull et al.
patent: 3761183 (1973-09-01), Yuasa et al.
patent: 4205918 (1980-06-01), Kisanuki et al.

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