(英)一种红外双波段衍射望远镜的光学设计
投稿时间:2018-04-24  修订日期:2018-06-11  点此下载全文
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王昊 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室 wanghao14@mails.ucas.ac.cn 
康福增 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室 kangfuzeng@opt.ac.cn 
赵卫 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室  
李毅超 中国科学院西安光学精密机械研究所 瞬态光学与光子技术国家重点实验室  
中文摘要:深入研究了双层谐衍射光学元件,基于衍射效率方程对双层衍射元件的衍射效率进行优化。光学系统在中波红外和长波红外波段的衍射效率均超过了99%,极大的提高了图像的对比度和像质。设计了一款新型的红外双波段衍射望远镜,取得了接近衍射极限的成像质量,易于加工。
中文关键词:衍射效率,HDE,光学设计
 
An optical design for dual-band infrared diffractive telescope
Abstract:In this paper, the double-layer harmonic diffractive element (HDE) structure is investigated and the optimization procedure is based on the equation of diffraction efficiency of the double-layer diffractive optical element. The diffraction efficiency of the system in the designed middle and far infrared wavebands is larger than 99%, which improves the image contrast and the imagequality significantly. A new dual-band infrared double-layer HDE telescope is designed, which can work in the middle and far infrared wavebands. It is shown that the system approximately attains diffraction limit and is easy to processed.
keywords:diffraction efficiency, HDE, optical design
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