BS ISO 11476:2016规定了用于测定混凝土CIE白度的程序 纸张和纸板，以获得与白皮书的视觉外观相对应的值 以及在室内观看时使用或不使用荧光增白剂的板。它是基于 与测量结果相比，在整个可见光谱范围（VIS）内获得的辐射系数数据 ISO亮度，仅限于可见光的蓝色区域。本国际标准还规定: CIE色度值和CIE白度荧光成分的测定程序。此外，它还规定了调整紫外线含量的方法，以符合CIE的要求 光源C，[10][12]因为存在荧光增白剂时获得的结果是 取决于落在样品上的辐射的紫外线含量。取CIE光源C 代表室内照明条件，因为它含有适当比例的紫外线 辐射[7] 此方法不适用于含有荧光染料的彩色纸张。它是具体的 荧光出现在可见光谱范围的蓝色区域。本国际标准与ISO 2469一起阅读。注1:公认CIE白度公式是在CIE标准的背景下制定的 光源D65，[5]但C和D65光源的相对光谱功率曲线之间的相似性 在可见光区域内以及它们相关色温（6770 K和6500 K）的接近度 分别）作为对CIE光源C使用类似白度公式的理由。注2相关国际标准ISO 11475规定了获取值的程序 与在CIE标准光源D65下查看的纸张外观相对应。交叉引用:ISO 186ISO 2469ISO 2470-1ISO 4094ISO 187ISO 3688ISO 11475ISO 11664- 1:2007CIE S 014-2/E:2006ISO 11664-2:2007CIE S 014-2/E:2006ASTM E308-08CIE S 017/E:2011CIE 15:2004购买本文件时可用的所有当前修订版均包含在购买本文件中。

BS ISO 11476:2016 specifies the procedure to be used for determining the CIE whiteness of papers and boards, in order to obtain values which correspond to the visual appearance of white papers and boards, with or without fluorescent whitening agents, when they are viewed indoors. It is based on radiance factor data obtained over the full visible spectral range (VIS) in contrast to the measurement of ISO brightness, which is limited to the blue region of VIS. This International Standard also specifies the procedures for the determination of CIE tint values and the fluorescent component of CIE whiteness.In addition, it specifies a method for adjustment of the UV-content to correspond to that of CIE illuminant C,[10][12] since the results obtained when fluorescent whitening agents are present are dependent upon the UV-content of the radiation falling upon the sample. The CIE illuminant C is taken to be representative of indoor illumination conditions because it contains a suitable proportion of UV radiation.[7] This method is not applicable to coloured papers containing fluorescent dyes. It is specific to the situation where the fluorescence occurs in the blue region of the visible spectral range.This International Standard is read in conjunction with ISO 2469.NOTE 1 It is recognized that the CIE whiteness formula was developed in the context of the CIE standard illuminant D65,[5] but the similarity between the relative spectral power curves for the C and D65 illuminants within the visible region and the closeness of their correlated colour temperatures (6 770 K and 6 500 K respectively) are taken as a justification for the use of the analogous whiteness formula with the CIE illuminant C.NOTE 2 A related International Standard, ISO 11475, specifies the procedure for obtaining values corresponding to the appearance of papers viewed under the CIE standard illuminant D65.Cross References:ISO 186ISO 2469ISO 2470-1ISO 4094ISO 187ISO 3688ISO 11475ISO 11664-1:2007CIE S 014-2/E:2006ISO 11664-2:2007CIE S 014-2/E:2006ASTM E308-08CIE S 017/E:2011CIE 15:2004All current amendments available at time of purchase are included with the purchase of this document.