Reference number
ISO/CIE 11664-2:2022
© ISO 2025
International Standard
ISO/CIE 11664-2:2022
Colorimetry — Part 2: CIE standard illuminants
Edition 1
2022-08
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Published (Edition 1, 2022)

ISO/CIE 11664-2:2022

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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2022-08
    Stage
    : International Standard published [60.60]
  • Edition
     : 1
    Number of pages
     : 32
  • Technical Committee :
    CIE
    ICS :
    17.180.20 
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