Optics: measuring and testing – By shade or color – Trichromatic examination
Patent
1989-08-25
1990-10-30
McGraw, Vincent P.
Optics: measuring and testing
By shade or color
Trichromatic examination
356423, 356425, 364526, G01J 351, G01J 352
Patent
active
049664611
ABSTRACT:
A hue compass has triplet numerical values assigned to colors so that every possible color is identified with a unique triplet color identification number which represents the percentages of each primary color component present. Triplet values 100/0/0, 0/100/0, and 0/0/100 can be assigned to additive primaries blue-violet, green, and red, respectively. Their complementary colors yellow, magenta, and cyan can be assigned triplets 0/100/100, 100/0/100, and 100/100/0. Likewise, triplet values 100/0/0, 0/100/0 and 0/0/100 can be assigned to subtractive primaries yellow, magenta, and cyan, respectively. Their complementary colors, blueviolet, green, and red can be assigned 0/100/100, 100/0/100, and 100/100/0. A color robot can be employed to assign a triplet value for a given colored test object, whose color can be matched, e.g. by blending appropriate amounts of respective primary color pigments or dyes whose triplet color identification numbers are known.
REFERENCES:
patent: 1617024 (1927-02-01), Munsell et al.
Munsell Color (Brochure)--Date unknown.
Munsell Color--Applications Brochure--date unknown.
Grumbacher Color Compass, 1972.
Keesee LaCharles P.
McGraw Vincent P.
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