长波红外大视场大相对孔径光学系统设计  

Low F number LWIR optical system with wide field of view

作　　者：陈潇[1,2] 杨建峰[1] 马小龙[1] 何佶珂[3] 何建伟[1,2] 白瑜[1,2] 

机构地区：[1]中国科学院西安光学精密机械研究所空间光学研究室,陕西西安710119 [2]中国科学院研究生院,北京100039 [3]西安电子科技大学,陕西西安710071

出　　处：《应用光学》2010年第3期350-353,共4页Journal of Applied Optics

基　　金：国家自然科学基金资助(60808028,40301031)

摘　　要：设计了用于非制冷红外焦平面阵列探测器的大视场、大相对孔径的长波红外物镜。系统由3片非球面锗镜组成,采用反远距结构,系统焦距为6mm,相对孔径为1∶0.8,全视场角为160°,总长为86.13mm。设计结果表明:在空间频率为20lp/mm处的MTF值大于0.7,接近衍射极限。该系统除具有反远距结构的结构简单、体积小、质量轻、像面照度均匀等优点外,还具有超大视场。A low F number long-wavelength infrared optical system with wide field of view is designed. It consists of three aspherical germanium lenses with a reversed telephoto telecentric structure. The effective focal length is 6mm,the relative aperture is 1：0.8,the full field of view is 160°,and the total optical length is 86.13mm. The result shows that the modulation transformation function is greater than 0.7 at the spatial frequency of 20lp/mm. The system inherits the advantages of the reversed telephoto telecentric structure,it is simple in structure and small in volume,light in weight,uniform in illumination,and also has large field of view.

关 键 词：大视场 长波红外 非球面 光学设计 

分 类 号：TN216[电子电信—物理电子学] TH703[机械工程—仪器科学与技术]