Simplified and improved diffractive subtractive color...

Details Simplified and improved diffractive subtractive color... Simplified and improved diffractive subtractive color...

G - Physics

02

B

88/0.2

G02B 5/28 (2006.01) G02B 5/18 (2006.01)

Patent

CA 1068522

SIMPLIFIED AND IMPROVED DIFFRACTIVE SUBTRACTIVE COLOR FILTERING TECHNIQUE Abstract of the Disclosure 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. -1-

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