| 基于谐衍射特性的红外双波段光学系统设计 |
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| 引用本文： | 刘琳,贺谊亮,张兴德,李荣刚.基于谐衍射特性的红外双波段光学系统设计[J].激光与红外,2012,42(1):85-88. |
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| 作者姓名： | 刘琳 贺谊亮 张兴德 李荣刚 |
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| 作者单位： | 华北光电技术研究所,北京,100015 |
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| 摘 要： | 基于谐衍射光学元件的成像理论,将谐衍射透镜应用在传统红外单波段系统里,设计得到工作波段处于4.4～5.4μm和7.8～8.8μm的红外双波段光学系统。分析了谐衍射光学元件的特性,计算了光学系统的结构参数,并利用软件的多重结构进行了优化。设计结果表明,系统的光学传递函数在两个波段范围内,20 lp/mm时的归一化值均大于0.5,具有良好的成像质量。为红外光学系统的设计提供了一种全新器件。
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| 关 键 词： | 谐衍射元件 双波段 消色差 |
Design of a dual-band IR optic system based on harmonic diffraction |
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| LIU Lin,HE Yi-liang,ZHANG Xing-de,LI Rong-gang.Design of a dual-band IR optic system based on harmonic diffraction[J].Laser & Infrared,2012,42(1):85-88. |
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| Authors: | LIU Lin HE Yi-liang ZHANG Xing-de LI Rong-gang |
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| Affiliation: | North China Research Institute of Electro-optics,Beijing 100015,China |
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| Abstract: | A dual-band IR optic system with bands of 4.4~5.4 μm and 7.8~8.8 μm is designed on the basis of the special properties of Harmonic Diffractive Element(HDE).The HDE element characteristic is analyzed and the structural parameters of the system are calculated.The optimization using multi-configuration in the software has been simultaneously accomplished.The results show that the MTF values are all over 0.5 at the resolution of 20lp/ mm,which displays a good optical performance.The HDE offers a new component for optical designs. |
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| Keywords: | harmonic diffractive element dual-band achromatic |
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