大面积发散太阳模拟器均匀照明方法研究

为实现太阳模拟器的大辐照面积均匀照明，研究了大面积发散太阳模拟器光学系统的设计与仿真。分析了复眼透镜阵列组与发散投影系统工作原理及旁瓣效应产生机理；基于嵌套建模思想，结合多项式拟合方法，得出了氙灯轴上强度分布曲线，并根据氙灯发光能量对称性质，实现了氙灯空间光强分布模拟；结合提出的光学系统设计边界条件与参数，设计了光束整形系统、复眼透镜阵列组和发散投影系统。实验结果表明：当工作距离为20000mm，辐照面直径1500mm范围内，辐照均匀度为92.8%，满足了大面积发散太阳模拟器均匀照明的使用需求。

Uniform Illumination Method Study on Large-Area Divergent Solar Simulators

We research the optical system simulation and design methods for large-area divergent solar simulators to realize the uniform illumination of large irradiation area of solar simulators. We analyze the working principle of fly-eye lens array groups and divergent projection system and the production mechanism of sidelobe effect. Then, on the basis of nesting modeling thought, we get the intensity distribution curve of the xenon lamp axis with the combination of polynomial fitting method. Furthermore, we realize the luminous intensity distribution simulation of the xenon lamp according to the luminous energy symmetry of the xenon lamp. After that, we put forward the boundary conditions and parameters for the optical system design. Finally, we design a beam shaping system, a fly-eye lens array group and a divergent projection system. The experimental results show that if the working distance is 20000mm and the irradiation surface diameter is 1500mm, the irradiation uniformity is 92.8%. It meets the uniform illumination requirement of large-area divergent solar simulators.