| 折／衍混合民用车载大像面长波红外消热差镜头设计 |
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| 引用本文： | 李卓,闫晶,王远方舟,孙权,姜丹.折／衍混合民用车载大像面长波红外消热差镜头设计[J].长春光学精密机械学院学报,2013(6):20-23. |
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| 作者姓名： | 李卓 闫晶 王远方舟 孙权 姜丹 |
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| 作者单位： | [1]洛阳电光设备研究所,洛阳471023 [2]长春理工大学理学院,长春130022 [3]吉林省科学技术信息研究所,长春130021 |
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| 摘 要： | 为满足民用车载红外视觉增强系统的迫切需求，针对384×288型像元尺寸为38μm×38μm的非制冷探测器，利用衍射元件的光热特性采用光学被动式消热差方法设计了一个折／衍混合大像面长波红外消热差镜头，介绍了折／衍光学元件的温度特性及设计消热差系统的原理。通过合理的选择衍射面的基底材料，用CODEV对系统进行优化设计。设计结果表明：系统在工作波段8～12肚m，f=21mm，F数为1．4时在-40℃-80℃的温度范围内调制传递函数MTF大于O．3，符合消热差系统的条件。
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| 关 键 词： | 衍射元件 光学被动式 消热差 |
Design of a Hybrid Refractive/Diffractive LIR Athermal Lens for Civilian Vehicle |
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| LI Zhuo,YAN Jing,WANG Yuanfangzhou,SUN Quan,JIANG Dan.Design of a Hybrid Refractive/Diffractive LIR Athermal Lens for Civilian Vehicle[J].Journal of Changchun Institute of Optics and Fine Mechanics,2013(6):20-23. |
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| Authors: | LI Zhuo YAN Jing WANG Yuanfangzhou SUN Quan JIANG Dan |
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| Affiliation: | 3 (1.Luoyang Institute of Electro-optical Equipment, Luoyang 471023; 2.School of Science, Changchun University of Science and Technology, Changchun 130022; 3.Institute of Scientific and Technical Information in Jilin Province, Changchun 130021) |
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| Abstract: | In order to meet IR vision enhancement system＇s urgent need for civilian vechicle, a Hybrid Refractive/Dif- fractive LIR Athermal Lens was designed by using the characteristics both light and thermal of diffractive optical ele- ments and taking measures to the passive optical athermallization method for an uncooled detector with 384×288 pixel and 38μm×38μm, the temperature characteristics of refractive/diffractive optical elements and the theroy of desiging a athermal system was introduced.Through rationally selecting the substrate material of diffractive surface, the system was optimized with CODEV.The result indicated that while the wavelength of the system was 8-12μm, the focal length was 21ram, F number was 1.4, the modulation transfer function （MTF） was greater than 0.3 at the temperature range from -40℃-80℃, the requriments for athermal system was satisfied. |
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| Keywords: | diffractive optical elements passive optical athermallization athermal |
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