第18卷第3期 2010年3月
文章编号1004-924X(2010)03-0579-07
光学精密工程
Optics and Precision Engineering
Vol, 18No.3 Mar.2010
谐衍射中、长波红外超光谱成像系统设计刘英12，王学进3，潘玉龙”，徐长明3，孙强"，卢振武"，曲锋12
(1.中国科学院长春光学精密机裁与物理研究所应用光学国家重点实验室，吉林长春130033：
2.中国科学院研究生院，北京100049;3.第二炮兵工程设计研究院，北京100011)
摘要：为了充分利用中波红外和长波红外的光谱信息，建立了谐衍射中、长波红外超光谱成像系统，利用谐衍射元件独特的色散特性，将谐衍射透镜应用于中、长波红外超光谱成像系统中，使系统在中波红外3.7～4.8um和长波红外8.5 ～12μm的2个谐振波段内获取二百多个不同波长的图像信息，设计结果显示，在中波红外波段18ip/mm处，光学调制传递函数>0.52；长波红外波段13lp/mm处，光学调制传递函数>0.51；光学系统的点斑均方根直径在中波红外波段小于27μm，在长波红外波段小于34μm。得到的结果表明，光学调制传递函数在各个波长处均接近衔射极限，点斑的
均方根直径完全可以与国内现有探测器的像元尺寸匹配。关键词：红外成像；超光谱成像系统；谐行款透镜
中图分类号：TH744.1;TN219
文献标识码：A
Design of hyper-spectral imaging system with harmonic
diffractionelementinmediumandlonginfrareds
LIU Ying'-2,WANGXue-jin",PAN Yu-long',
XUChang-ming",SUNQiang',LUZhen-wu',QUFeng"-
(1.KeyLaboratoryofAppliedOptics,ChangchunInstituteofOptics,
FineMechanicsandPhysics,ChineseAcademy ofSciences,Changchun130033,China 2.GraduateUniversity of ChineseAcademyof Sciences,Beijing100049,China;
3.EngineeringDesign &Research Institute of the Second Artillery,Beijing l000ll,China) Abstract: By making the best of the spectral information of medium and long infrareds, a harmonic diffractive/refractive optical system in middle and long infrareds is established, the hyper-spectral im aging system has obtained more than 200 spectral images in medium-wave infrared band of 3. 7~4. 8 μm and long-wave infrared band of 8. 5~12 μm based on the special large dispersion capability of har-monic diffractive elements. The design results show that the optical modulation transfer function is greaterthan0.52at18lp/mm inmedium-wave infrared band;and greater than0.51at13Ip/mm in long-wave infrared band. Furthermore, the RMS spot diameter is less than 27 μm in medium-wave in frared band and is less than 34 μm in long-wave infrared band.Obtained data indicate that the optical modulation transfer functions at all wavelengths are close to the diffraction limit; and the RMS diame
收稿日期：2009-03-02；修订日期：2009-04-30
基金项目：国家863高技术研究发展计划资助项目（No.2007AA12Z110)；国家自然科学基金资助项目（No.
60507003)；吉林省科技发展计划杰出青年资助项目