The e-ILV provides free access to all the terms and definitions contained in the international standard CIE S 017:2020 ILV: International Lighting Vocabulary, 2nd edition.
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luminance contrast ratio, <of a display>
quotient of the luminances of two active parts of a display surface having the same or different colours
Note 1 to entry: The luminance contrast ratio has unit one.
Note 2 to entry: This entry was numbered 17-714 in CIE S 017:2011.