本文件提供了测量光、辐射和/或光子通量的方法，以及随时间变化的色度和其他光谱特性。该方法适用于LED灯、LED灯引擎、LED灯具、OLED灯引擎和OLED灯具。本文件描述了在标准操作条件下，作为光谱维持测量，测定光通量、辐射量和/或光子通量、光谱功率分布（SPD）和色度的初始测定和再现结果时应遵循的程序和注意事项。注:SSL产品已在园艺和其他应用中采用。预计SSL产品将被用于新的照明应用，并渗透到其他市场。由于SSL产品的其他应用，该批准方法的范围已扩大，包括报告光通量之外的光子通量和辐射通量。

This document provides the method for measuring the luminous, radiant, and/or photon flux, as well as chromaticity and other spectral properties over time. This method applies to LED lamps, LED light engines, LED luminaires, OLED light engines, and OLED luminaires. The docment describes the procedures to be followed and the precautions to be observed in both initial determination and reproduction of results for determining luminous, radiant, and/or photon flux, and spectral power distribution (SPD) and chromaticity as spectral maintenance measurements, under standard operating conditions. Note: SSL products have already been adopted in horticultural and other applications. It is expected that SSL products will be adopted in new lighting applications and penetrate additional markets. As a result of the additional applications for SSL products, the scope of this Approved Method has been expanded to include reporting of both photon flux and radiant flux in addition to luminous flux.