| 含双层衍射元件消热差长波红外光学系统设计 |
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| 引用本文： | 官庆.含双层衍射元件消热差长波红外光学系统设计[J].光学与光电技术,2013,11(2):91-94. |
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| 作者姓名： | 官庆 |
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| 作者单位： | 海军驻中南地区光电系统代表室,湖北武汉,430223 |
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| 摘 要： | 采用多层衍射元件是实现宽波段高衍射效率的有效方法,设计了一个含双层衍射元件-30℃～70℃消热差系统。通过合理选择衍射面的基底材料,优化衍射表面的浮雕深度,设计出红外宽波段高衍射效率的消热差光学系统。设计结果表明,在整个设计温度范围内,该光学系统成像质量良好,光学传递函数在16lp/mm时均在0.6以上。
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| 关 键 词： | 衍射光学 衍射效率 多层衍射元件 无热化 浮雕深度 |
Design of LWIR Athermalized Optical System with Dual-Layer Diffractive Element |
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| GUAN Qing.Design of LWIR Athermalized Optical System with Dual-Layer Diffractive Element[J].optics&optoelectronic technology,2013,11(2):91-94. |
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| Authors: | GUAN Qing |
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| Institution: | GUAN Qing ( Zhongnan Electro-Optics Military Representative Bureau of Navy, Wuhan 430223, China ) |
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| Abstract: | A multi-layer diffractive optical element can improve the diffraction efficiency in wide waveband. An athermalized system with dual-layer diffractive optical element is designed, which works at temperatures ranging from -30 ℃- ＋70 ℃. By reasonable choosing the substrate material, and optimizing the relief depth of diffraction plane, a LWIR athermalized op- tical system with dual-layer diffractive element is designed. Experimental results show that the designed optical system can achieve a high imaging quality, and the modulation transfer function is higher than 0. 6 at 161p/mm in the designed temperature range. |
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| Keywords: | diffractive optics dual-layer diffractive elements athermalization diffractive efficiency relief |
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