The reflective light filed distribution is studied in great detail with diffraction approach , which is based on the quasi - gaussian beam model of the light emitted from the multimode transmitting fiber and conclusions drawn by beckmann on the scattering light from random rough reflector 引入了beckmann關(guān)于隨機(jī)粗糙表面光散射理論的相關(guān)研究結(jié)論,基于衍射分析法建立了準(zhǔn)高斯光經(jīng)過反射面后的反射光分布模型。