IEC 62977-2-2:2020（E）规定了在室内和室外照明条件下确定电子显示器光学特性的标准测量条件和测量方法。规定了标准的照明几何结构，并在这些条件下确定了平板屏幕的反射特性。参考照明水平和光谱用于估计相同条件下电子显示器的光度和色度特性。这些方法适用于在平面屏幕上呈现真实2D图像的发射、透射和反射显示器或其组合。

IEC 62977-2-2:2020(E) specifies standard measurement conditions and measuring methods for determining the optical characteristics of electronic displays under indoor and outdoor illumination conditions. Standard illumination geometries are specified and the reflection properties of flat screens are determined under those conditions. Reference illumination levels and spectra are used to estimate the photometric and colorimetric characteristics of electronic displays under the same conditions. These methods apply to emissive, transmissive, and reflective displays, or combinations thereof, that render real 2D images on a flat screen.