According to different feature sizes and distances from the element’s surface to the observation point ,the analysis methods for binary optical elements can be classified into two categories ,the scalar diffraction analysis methods and the vector diffraction analysis methods .
根据元件特征尺寸及观察衍射场离衍射元件的远近 ,二元光学元件的分析方法有两种 ,标量衍射分析法和矢量衍射分析法。