摘要
红外镜头往往很容易受到温度变化的影响。在红外镜头中,所有光学元件都是以镜筒为依托,镜筒的设计很大程度上决定了镜头的结构设计,并直接影响其光学性能。本文以某款红外镜头为例,运用ANSYS有限元软件的优化模块,对镜筒进行了仿真优化,通过多次迭代选出了最优解。然后通过光机热集成分析方法,运用泽尼克多项式对处理后的面形数据拟合,导入光学软件ZEMAX中进行光学性能分析,并与优化前的模型进行对比,分析结果表明,镜筒壁厚在一定程度上影响了红外镜头的光学性能,优化镜筒壁厚可以减小镜片在热环境中的面形畸变,使红外镜头的光学性能得到提高。
Infrared lens is susceptible to temperature changes . In the infrared lens , all optical elements are based on the tube and thetube design largely deter^nines the structure design of lens , also directly affect the optical properties . In this paper, we took an infrared lens as an example , used the optimization module of ANSYS finite element software , and carried out the simulation and optimization of the tube , and then chose the optimal solution by multi-iteration . After that, through the structure-thermal-optical performance integrated analysis （ STOP ）, using Zernike polynomials , w,e fit the processed surface data and analyzed the optical performance . Through the introduction of optical software ZEMAX , also , it is compared with the model before optimization . Analysis results showed ： to some extent, the tube wall thickness influenced the optical performance of infrared lens . Optimization of tube wall thickness could reduce the surface distortion of lens in thermal environment, and then the optical performance of infrared lens could be improved .
出处
《价值工程》
2017年第14期85-88,共4页
Value Engineering
基金
国家重点新产品资助项目(2012GRF30008)
关键词
红外镜头
光机热集成
结构优化
热光学特性
infrared lens
structure -thermal-optical performance
structural optimization
thermal optical properties
