本发明提供了一种用于评估测试源作为CIE标准光源D55、D65或D75模拟器的适用性的方法。该补遗于1999年编制，将CIE光源D50添加到该方法适用的光源系列中。对于这些标准光源中的每一种，提供五对同色异谱匹配的非荧光样品的光谱辐射系数数据。计算五对测试光源的色度差异；这些差异的平均值被视为可见范围同色异谱指数，并用作测试光源质量的衡量标准，作为非荧光样品的模拟器。 对于荧光样品，根据紫外范围同色异谱指数进一步评估质量，该指数定义为用测试光源计算的另外三对样品的色度差异的平均值，每对样品由一个荧光和一个非荧光样品组成，在标准光源下同色异谱。本报告应与CIE 15.2-1986色度法结合使用。本报告由30页、1个图表和12个表格组成。

A method is provided for evaluating the suitability of a test source as a simulator of CIE Standard Illuminants D55, D65, or D75. The Supplement, prepared in 1999, adds the CIE Illuminant D50 to the line of illuminants where the method can be applied to. For each of these standard illuminants, spectral radiance factor data are supplied for five pairs of nonfluorescent samples that are metameric matches. The colorimetric differences of the five pairs are computed for the test illuminant; the average of these differences is taken as the visible range metamerism index and is used as a measure of the quality of the test illuminant as a simulator for nonfluorescent smaples. For fluorescent samples, the quality is further assessed in terms of an ultraviolet range metamerism index, defined as the average of the colorimetric differences computed with the test illuminant for three further pairs of samples, each pair consisting of a fluorescent and a nonfluorescent sample which are metameric under the standard illuminant.This report should be used in conjunction with CIE 15.2-1986 Colorimetry.This report consists of 30 pages, 1 figure and 12 tables.