采用遮光眩光指数（VGI）和眩光扩散函数（GSF）作为光学和电光成像系统遮光眩光特性的度量。概述了实验室测量技术，并就设备主要子单元的性能提出了建议。所描述的测量技术主要适用于视觉光谱范围。还提供了测量设备的操作指南，以便获得准确的结果。

Adopts both the veiling glare index (VGI) and the glare spread function (GSF) as measures of the veiling glare characteristics of optical and electrooptical imaging systems. Laboratory measurement techniques are described in general terms and recommendations are made regarding the performance of the main subunits of the equipment. The measurement techniques described are chiefly valid for the visual spectral range. Also gives guidelines for the operation of measuring equipment such that accurate results can be achieved.