激光显示器第5-6部分:投影屏幕光学性能的测量方法

[中文适用范围]： 本部分IEC 62906规定了投影屏幕在光度量特性（包括屏幕增益和斑点对比度）方面的标准测量条件和测量方法，适用于投影屏幕与激光投影仪集成使用且配置固定的情况。包括平面屏幕的前投和后投屏幕，但不包括光学透明屏幕（如抬头显示器）。 [外文原描述]： IEC 62906-5-6:2020 (E) specifies the standard measurement conditions and measuring methods for determining the optical performance of a projection screen in terms of its photometric characteristics, including screen gain and speckle contrast, from different viewing directions. These methods are only applied for the case in which the projection screen and a laser projector are integrated and used with a fixed configuration as a set to create a real image. Both front and rear projection screens, with a flat surface, are included. This document excludes projection screens which are classified as optically see-through screens, including head-up displays.