工业上广泛使用的发光材料有两种，仅在激发和发射波长区域的位置不同。第一种是用于安全和信号应用的彩色发光材料，本报告主要考虑这一点。这些材料通常是通过吸收紫外线和短波可见光区域的辐射而激发的。第二类含有荧光增白剂（FWA），在紫外线下吸收，在短时间内发射- 波长可见区域，否则这两种类型非常相似。用于测量这些发光材料样品的最广泛使用的仪器类型是带有观察光束的单色仪分光光度计。该领域的大多数仪器都具有积分球几何结构。本技术报告描述了发光材料（总）光谱辐射系数（SRF）测量的相互比较。提供了七个发光样品作为涂漆面板: 其中两种为白色，含有FWA，五种为彩色（绿色、黄色、两种橙色、红色）。SRF通过模拟CIE D65的光源直接照射试样进行测量。在D65照明条件下获得的SRF将通过委员会之前研究的方法进行计算。该报告审查了在测量中产生系统误差的问题的性质，以及纠正测量结果的可能性。 根据详细描述的调查结果，委员会得出结论，可以在不同实验室的各种单色仪上测量和计算发光材料的SRF，使其与平均结果的平均CIELAB色差在约2,6个单位内，样本范围为1,9到3,4个单位，数据集范围为1,5到4,2个单位。如果选择一个实验室作为参考，并计算相对于它的色差，则会发现类似的数量级。 然而，样本之间的最大SRF范围相当大，从11.4%到33.6%不等。这些结果包括使用该几何体时积分球效率效应的校正。从文献中描述的不同数据缩减和纠正程序的相互比较和评估中得出的结论是，目前不应制定正式商定的CIE建议。该报告已提交供研究和使用。 然而，读者会在本出版物中找到许多方法，通过应用这些方法，他们的测量结果可以更加准确。该出版物共有68页和29个表格。

There are two kinds of luminescent materials widely used in industry, differing only in the locations of their excitation and emission wavelength regions. The first, which is mainly considered in this report, are the chromatic luminescent materials used for safety and signal applications. These materials are generally excited by absorption of radiation in the ultraviolet and short-wavelength visible region. The second type, containing fluorescent whitening agents (FWAs), absorbs in the ultraviolet and emits in the short-wavelength visible region, otherwise the two types are very similar.The most widely used type of instrumentation for measuring specimens of these luminescent materials is the one-monochromator spectrophotometer, with the viewing beam. The large majority of these instruments in the field have integrating-sphere geometry.This Technical Report describes an intercomparison of measurements of the (total) spectral radiance factor (SRF) of luminescent materials. Seven luminescent specimens were provided as painted panels: two were white containing FWAs and five were chromatic (green, yellow, two orange, red).The SRFs were to be measured with direct specimen illumination by a source simulating CIE D65. The SRFs that would have been obtained under D65 illuminations were to be calculated by a method from among those previously studied by the committee.The report reviews the nature of the problem producing systematic errors in the measurement and possibilities for correcting the measurements results.From the performed investigation described in detail, the committee concluded that the measurement and calculation of the SRFs of luminescent materials can be made, on various one-monochromator instruments in different laboratories, to within an average CIELAB color difference of about 2,6 units from the mean results, with a range among specimens from 1,9 to 3,4 units, and a range among data sets from 1,5 to 4,2 units. Similar orders of magnitude are found if one laboratory is selected as the reference and the color differences are calculated relative to it. The range of maximum SRFs among samples is, however, quite large, varying from 11,4% to 33,6%. These results include correction for integrating-sphere-efficiency effects where this geometry was used.The conclusion drawn from the intercomparison and the evaluation of the different data reduction and correction procedures described in the literature is that no officially agreed CIE recommendation should be formulated at this time. The report has been presentedfor study and use. The readers will find, however, a number of methods in this publication, by the application of which their measurement results can be made more accurate.The publication contains 68 pages and 29 tables.