CIE 1931 standard colorimetric system
system for determining the tristimulus values of any spectral power distribution using the set of reference colour stimuli [X], [Y], [Z] and the three CIE colour-matching functions adopted by the CIE in 1931
Note 2 to entry: The CIE 1931 standard colorimetric system is applicable to centrally viewed fields of angular subtense between about 1° and about 4° (0,017 rad and 0,07 rad).
Note 3 to entry: The CIE 1931 standard colorimetric system can be derived from the CIE 1931 RGB colorimetric system using a transformation based on a set of three linear equations. The CIE 1931 RGB system is based on three real monochromatic reference stimuli.
Note 4 to entry: See also CIE 15
Note 5 to entry: This entry was numbered 845-03-28 in IEC 60050-845:1987.
Note 6 to entry: This entry was numbered 17-150 in CIE S 017:2011.