在太阳模拟器中,聚光系统是提高氙灯光源光能利用率的关键部件。根据氙灯光源的发光特性,通常采用椭球面反射式聚光镜作为模拟器的聚光系统。以用于中小型太阳模拟器的椭球镜为研究对象,基于椭球镜与光学积分器相对孔径匹配一致的设计思路,提出了椭球镜外形尺寸选型和光学参数计算的分析思路和具体方法,给出了有效的经验公式。结合具体实例通过ASAP软件对氙灯光源和椭球镜进行仿真建模,利用蒙特卡洛光路追迹方法模拟出实际光照效果,对椭球镜第二焦面上辐照度分布情况进行了仿真分析,仿真结果表明,基于该设计方法的椭球面聚光镜的有效取光比达到50%以上。验证了这种设计思路和计算方法的合理性,为太阳模拟器高效聚光椭球镜的设计提供了借鉴。

In solar simulator, condenser system is an important part for improving efficiency of light energy utilization. According to the luminescence properties of xenon lamp, ellipsoid reflecting condenser is often used as the condenser system of solar simulator. In this paper, ellipsoid condenser used in small and medium-sized solar simulator is researched. Based on the design idea of consistent relative aperture among the ellipsoid condenser and optical integrator, the selection method of ellipsoid lens sharp size and calculation of the optical parameters are given. An effective empirical formula is presented. ASAP software is used to be simulating for xenon lamp and ellipsoid condenser combined with specific case. The actual illumination effect is simulated by Monte Carlo ray tracing method. The irradiance distribution on the second focal plane of ellipsoid condenser is simulated, and the results show that the effective concentration ratio of the ellipsoid condenser is more than 5%. It validated that the design and calculation method is rational. The high-efficiency ellipsoid condenser design can get reference from the research of this paper.