折衍混合红外光学系统消热差设计  

Athermal design of refractive-diffractive hybrid infrared optical systems

作　　者：梁玲[1] 张良[1] 潘晓东[1] 

机构地区：[1]中航一集团洛阳电光设备研究所,河南洛阳471009

出　　处：《电光与控制》2008年第8期72-75,F0003,共5页Electronics Optics & Control

摘　　要：论述了衍射光学元件的消热差和消色差的温度特性及设计方法，根据折射和衍射光学元件固有特性，设计采用320×256凝视焦平面阵列探测器，工作在中波3—5μm，视场范围为8°×6°的红外系统，该系统使用硅和锗两种红外光学材料。实现了在-40-60℃温度范围内消热差和消色差，像质优良。此系统具有成像质量高、体积小、重量轻、工作温度范围宽的特点，使得折／衍混合光学元件在机载红外成像系统中得到成功应用。The principle and design method of employing diffractive optical element to athermalize and achromatize an infrared optical system are expounded. Based on the distinct characteristics of the refractive and diffractive optical elements, a passive thermal-stable hybrid system is designed. The system has following parameters： waveband range is 3 - 5 μm, F/# = 2, field-of-view is 8°-6°, focal length is 70.3 mm, a staring high-sensitivity focal plane array infrared detector comprised of 320×256 elements is adopted, each element is 30 tam. In this system, two kinds of material of Silicon and Germanium are used. Athermalization and achromatization are realized for the infrared imaging system in temperature range - 40-60℃. Design result showed that refractive-diffractive hybrid system has better image quality, compact structure, light weight and reliable performance within required temperature range. Therefore, refractive/diffractive optical elements can find wider application in airborne infrared imaging system.

关 键 词：折-衍混合透镜 光学设计 热补偿设计 军用光学仪器 

分 类 号：V243.6[航空宇航科学与技术—飞行器设计]