运用非成像光学的光学扩展量理论，根据反射罩曲面上一定区域内入射光通量分布比例与反射光通量分布比例对等的原则，确定每一条入射光线所对应的反射光线方向，求出所需反射罩的形状.根据光源的配光曲线、辐照面积、辐照强度和辐照不均匀性等要求，进行大面积太阳模拟器的反射罩设计，并运用TracePro软件对所设计的系统进行光线追迹仿真.结果表明，运用这种方法设计反射罩曲面，大大缩短设计时间，提高了效率，并且所设计的曲面能较好地符合设计要求.

Using the extending non-imaging optics theory and based on the principle of equalization of the distribution ratio of the luminous flux of incident rays to reflective ones in certain area of the surface，the direc-tion of the corresponding reflective ray to each incident ray is ascertained.Then the shape of reflector can be at-tained easily.According to the emission characteristics of light，area，irradiance and uniformity to design the re-flector，then TracePro can be used to simulate the design.The results show that using this method to design the reflector can reduce the time and improve the efficiency.And the design can meet the requirements well.