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BS EN ISO/CIE 11664-3:2019

BS EN ISO/CIE 11664-3:2019

$102.76

Colorimetry – CIE tristimulus values

Published By Publication Date Number of Pages
BSI 2019 18
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This document specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli can be produced by self-luminous light sources or by reflecting or transmitting objects.

This document requires that the colour stimulus function be tabulated at measurement intervals of 5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380 nm to 780 nm.

The standard method is defined as summation at 1 nm intervals over the wavelength range from 360 nm to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and when the user has reviewed the impact on the final results.

This document can be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer.

PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
11 5 Standard method
5.1 General
5.2 Calculation of tristimulus values
12 5.3 Normalizing constant for self-luminous light sources
5.4 Normalizing constant for reflecting or transmitting objects
13 5.5 ​CIE 1964 standard colorimetric system
6 Abridged methods
6.1 General
6.2 Abridged method for data at 5 nm intervals or less
6.3 Abridged method for 10 nm or 20 nm data for reflecting or transmitting objects
14 6.4 Abridged method for 10 nm or 20 nm data for self-luminous light sources
7 Supplementary treatment of input data
7.1 General
15 7.2 Extrapolation
7.3 Interpolation
7.4 Bandwidth
16 8 Chromaticity coordinates
9 Numerical procedures
10 Presentation of results
17 Bibliography

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BS EN ISO/CIE 11664-3:2019
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