根据国际照明词汇和其他相关CIE出版物，定义了与反射和透射特性相关的材料特性。规定了影响这些特性的参数和涉及的测量原理，无论是根据光谱特性还是加权（例如发光）特性进行测量，这些参数和原理都是相同的。建议使用积分球的方法测量:*定向和半球形辐射入射的反射系数，*漫反射系数，*定向和半球形辐射入射的透射系数，*漫透射系数。对于*规则反射率、*规则透射率、*辐射/亮度系数（辐射/亮度系数q）的测量，也建议使用特定方法。吸收率可以直接测量，也可以根据反射率和透射率的测量值计算。 这两个过程都有描述。检查了主要测量误差，并在可能的情况下指出了消除这些误差的方法。该出版物共有66页，28个数字和1个表格。

The characteristics of materials related to their reflection and transmission properties are defined in accordance with the International Lighting Vocabulary and other relevant CIE publications.The parameters affecting these characteristics and the principles of measurement involved, which are the same whether the measurement is made in terms of spectral or weighted (e.g. luminous) characteristics, are specified.Methods, using an integrating sphere, are recommended for the measurement of:* reflectance for directional and hemispherical incidence of radiation,* diffuse reflectance,* transmittance for directional and hemispherical incidence of radiation,* diffuse transmittance.Specific methods are also recommended for the measurement of* regular reflectance,* regular transmittance,* radiance/luminance factor (radiance/luminance coefficient q ).The absorptance can either be measured directly or calculated from the measured values of reflectance and transmittance. Both procedures are described.The principal measurement errors are examined and, where possible, methods for their elimination indicated.The publication contains 66 pages, 28 figures and 1 table.