红外镜头的光机热集成分析研究

 为了使红外镜头能够在宽的温度范围内工作，在红外光学系统的设计时就要充分考虑热对光学性能的影响，并要进行光机热集成分析。论述了光机热集成分析方法及流程，并设计了一个焦距f=200 mm的冷光栏匹配的宽工作温度的红外镜头。建立了红外镜头的有限元模型并进行了热力学分析，对分析的镜面变形结果数据进行了处理，得到各镜片间隔和面形变化，代入光学软件得到了热环境对光学成像质量的影响。分析结果表明，对于-40℃~+60℃红外镜头的各个视场，16线对的调制传递函数都大于0.5，具有良好像质。所设计的红外镜头结构简单可行，能够满足设计要求。

Integrated opto-mechanical-thermal analysis of infrared lens

In the design of infrared optical system,the impact of thermal effect on optical performance should be taken into account so as to achieve a good temperature performance and the integrated opto-mechanical-thermal analysis should be conducted.The method and flow chart of integrated opto-mechanical-thermal analysis were discussed.An infrared lens with a focal length of 200 mm was designed,which matched with cold shield and could operate at a wide temperature range.The finite element model of the infrared lens...