Simplified and improved diffractive subtractive color filtering

Details Simplified and improved diffractive subtractive color filtering Simplified and improved diffractive subtractive color filtering

1976-06-09

1977-11-08

Corbin, John K.

350162SF, 350314, G02B 518, G02B 522

Patent

active

040573265

ABSTRACT:
The present invention takes advantage of the fact that the first and second optical depths of a diffractive subtractive color filter respectively manifesting cyan and yellow zero-order diffraction light may be so selected that an optical depth equal to the sum of the first and second optical depths manifests green zero-order diffraction light. This permits a variable optical amplitude first grating, manifesting cyan, yellow and green, to be combined with a fixed optical amplitude second grating, manifesting magenta, to provide a full gamut of colors.

REFERENCES:
patent: 3504606 (1970-04-01), Macovski
patent: 3957354 (1976-05-01), Knop

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