一种非标准椭球面聚光镜设计方法

A design method of non-standard ellipsoid condenser

为提高太阳模拟器聚光镜的有效聚光效率,提出一种基于椭球面二项展开式的非标准椭球面聚光镜,通过改变展开式的二次项系数控制聚光镜面形,提高聚光镜对氙灯光源离焦发光点的聚光效果,使第二焦面上的光能分布更为紧凑,从而提高系统的光能有效利用率。结合具体实例进行数值分析,并采用蒙特卡洛光线追迹方法模拟实际光照效果。分析结果表明,在有效辐照面积内非标准椭球面的聚光效率相比传统标准椭球面提升了10%左右。

A non-standard ellipsoid condenser design method based on the binomial expansion is proposed in order to improve the effective concentration efficiency of the condenser for the solar simulator. This method controls surface shape of the condenser by changing the quadratic coefficient of the expansion. The non-standard ellipsoid condenser enhances the ability to converge defocused light energy, and improves the effective energy utilization by making the energy distribution more compact on the second focal plane. An ellipsoid condenser is used to analysis and simulate to display the actual lighting by Monte Carlo ray tracing method. Simulation results show that concentration efficiency of the non-standard ellipsoid condenser is about 10% higher than standard ellipsoid at the effective area.