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中波红外傅里叶变换成像光谱仪后置成像系统分析与设计

Design and Analysis for the Rear Imaging System of a Medium Wave Infrared Fourier Transform Imaging Spectrometer

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摘要

提出了一种基于多级微反射镜的静态化新型红外傅里叶变换成像光谱仪结构。系统不含狭缝和可动部件,因此光通量大、结构稳定。介绍了该成像光谱仪的工作原理和光程差的产生方式。根据系统原理对后置成像光学系统进行了分析与设计。结果表明:在-20 ℃~60 ℃的温度范围内,系统成像质量良好。全视场传递函数在CCD奈奎斯特频率17 lp/mm处大于0.6。系统的均方根(RMS)最大光斑直径小于12 μm,系统单个像元能量集中度大于80%,冷光阑匹配效率接近100%。以RMS光斑直径变化为标准,计算了系统的公差灵敏度矩阵,计算结果表明,后置成像系统0视场光斑尺寸小于16 μm的可能性为97.7%。

Abstract

A novel static infrared Fourier transform imaging spectrometer based on the multi-level micro-mirrors is proposed. The system does not contain slit and moving parts, thus the system has the advantages of a large luminous flux and a stable structure. The working principle and the generating means of the optical path difference for the imaging spectrometer are introduced. According to the working principle of the system, the rear imaging system has been analyzed and designed. The designed results show that the rear imaging system has a fine image quality at the temperature range of -20 ℃~60 ℃. In the full field of the Nyquist frequency of 17 lp/mm, the modulation transfer function (MTF) of the rear imaging system is greater than 0.6. The maximum root mean square (RMS) spot diameter of the system is less than 12 μm. The single pixel energy concentration is greater than 80% and the cold stop matching efficiency is near 100%. The changing of the RMS spot diameter as the standard is used to calculate the tolerance sensitivity matrix and the result shows that in the zero field the probability of spot diameter less than 16 μm is 97.7%.

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中图分类号:O436.1

DOI:10.3788/aos201434.0622007

所属栏目:光学设计与制造

责任编辑:韩峰  信息反馈

基金项目:国家自然科学基金(60977062,61027010,61376122)、国家863计划(2009AA04Z315)、吉林省科技发展计划项目(201205025,20130206010GX)、长春市科技发展计划项目(2011131,2013261)

收稿日期:2013-12-05

修改稿日期:2014-01-27

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王文丛:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033中国科学院大学, 北京 100049
梁静秋:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033
梁中翥:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033
吕金光:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033
秦余欣:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033
田超:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033中国科学院大学, 北京 100049
王维彪:中国科学院长春光学精密机械与物理研究所, 应用光学国家重点实验室, 吉林, 长春 130033

联系人作者:王文丛(wangwencong_2006_228@126.com)

备注:王文丛(1987—),男,博士研究生,主要从事红外成像光谱仪光学系统设计方面的研究。

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引用该论文

Wang Wencong,Liang Jingqiu,Liang Zhongzhu,Lü Jinguang,Qin Yuxin,Tian Chao,Wang Weibiao. Design and Analysis for the Rear Imaging System of a Medium Wave Infrared Fourier Transform Imaging Spectrometer[J]. Acta Optica Sinica, 2014, 34(6): 0622007

王文丛,梁静秋,梁中翥,吕金光,秦余欣,田超,王维彪. 中波红外傅里叶变换成像光谱仪后置成像系统分析与设计[J]. 光学学报, 2014, 34(6): 0622007

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