Color filter determining apparatus

Details Color filter determining apparatus Color filter determining apparatus

1975-03-06

1977-06-21

Bauer, Edward S.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

350266, 350315, 350317, 350318, 355 38, G01J 350

Patent

active

040308332

ABSTRACT:
The filter insertion settings of a colored light projector are determined by projecting the colored light through different light color windows of a test probe onto a light measuring device to provide a predetermined signal. Diaphragms on the color windows are adjusted to provide a predetermined balanced format for a predetermined balanced light condition. The filters on the projector are adjusted for a given light, such as through a color negative to be printed, to cause the aforementioned predetermined signal to be generated by the light measuring device. Different settings on different probes may be provided for different series of predetermined desirable color formats or combinations, such as for different types of color negatives -- for example, for verdant scenes or sea scapes. The optical diaphragms may be conveniently provided by adjustable screws running into the windows.

REFERENCES:
patent: 2780155 (1957-02-01), Debrie
patent: 3292488 (1966-12-01), Griffith
patent: 3467475 (1969-09-01), Celio et al.
patent: 3709600 (1973-01-01), Ganshorn

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