新型探照灯反射镜设计与仿真分析

Design and Simulation Analysis of A New Type of Searchlight Reflector

传统的探照灯内通常只采用单片抛物面反射镜对光线进行反射。为了提高光源使用率,根据卡塞格林系统原理,通过增加1片球面反射镜对光线进行二次收集,设计了一种组合式反射镜系统。介绍了该组合反射镜的光学原理,阐述了内部和外部两种组合方式的球面反射镜设计方法,并使用Solidworks、TracePro软件对组合反射镜进行了仿真模拟。结果表明,组合反射镜的光效比传统单片反射镜提高了15%以上。实际使用时,应根据参数需求,兼顾光效、加工难度、耐温性能、装卡方式等寻求球面反射镜的最优设计。

In the traditional searchlight, only a single parabolic reflector is usually used to reflect the light. In order to further improve the utilization rate of light source, according to the principle of Cassegrain system, a new type of combined reflectors was designed by adding a spherical reflector to collect the light twice. This paper introduces the optical principle of the combined reflectors, the design method of the spherical reflector in two combination modes, and the simulation analysis of the combined reflectors by Solidworks and TracePro. The results show that the light efficiency is increased by more than 15% by using the combined reflectors. In actual development, the light efficiency, processing difficulty, thermal stability and installation style should be considered to optimize the design of the spherical reflector according to parameter requirements.