GSO ISO/CIE 11664-2:2025
ISO/CIE 11664-2:2022
Gulf Standard
Current Edition
·
Approved on
14 October 2025
Colorimetry — Part 2: CIE standard illuminants
GSO ISO/CIE 11664-2:2025 Files
English
32 Pages
Current Edition
Reference Language
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GSO ISO/CIE 11664-2:2025 Scope
This document defines three CIE standard illuminants for use in colorimetry: CIE standard illuminant A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the representation of average daylight having a correlated colour temperature of approximately 6 500 K and CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are included in this document.
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