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| 大相对孔径紧凑型无热化红外光学系统设计 | |
| 引用本文： | 曲贺盟,张新,王灵杰,张继真.大相对孔径紧凑型无热化红外光学系统设计[J].光学学报,2012,32(3):322003-216. |
| 作者姓名： | 曲贺盟 张新 王灵杰 张继真 |
| 作者单位： | 曲贺盟:中国科学院长春光学精密机械与物理研究所, 光学系统先进制造技术中国科学院重点实验室, 吉林 长春 130033中国科学院研究生院, 北京 100049 张新:中国科学院长春光学精密机械与物理研究所, 光学系统先进制造技术中国科学院重点实验室, 吉林 长春 130033 王灵杰:中国科学院长春光学精密机械与物理研究所, 光学系统先进制造技术中国科学院重点实验室, 吉林 长春 130033 张继真:中国科学院长春光学精密机械与物理研究所, 光学系统先进制造技术中国科学院重点实验室, 吉林 长春 130033 |
| 基金项目： | 国家自然科学基金青年科学基金（61007009）资助课题。 |
| 摘 要： | 根据目前搜索和跟踪系统要求其红外成像光学系统具有高成像质量、超轻小型化和高温度适应性的特点。采用折反射式光学系统结构形式,基于J-T制冷型320×320凝视焦平面阵列探测器,设计了一种大相对孔径紧凑型无热化红外光学系统,光学系统远摄比达到0.6。采用光学被动消热差方法进行设计,使该系统在-40℃～60℃温度范围内实现了无热化。同时采用杂散辐射分析软件对系统进行杂散辐射分析,提出合理杂辐射抑制方案,给出了完整的光学系统设计。结果表明,光学系统在不同温度环境下所有视场的调制传递函数(MTF)(17lp/mm)均接近衍射极限,80%的能量集中在1个像元内,且具有结构紧凑、体积小等优点,可满足搜索和跟踪红外光学系统的使用要求。 |
| 关 键 词： | 光学设计 红外光学系统 折反射式光学系统 无热化 杂散辐射 |
| 收稿时间： | 2011/8/3 |
Design of a Low F-number Compact Athermalizing Infrared Optical System |
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| Qu Hemeng,Zhang Xin,Wang Lingjie,Zhang Jizhen.Design of a Low F-number Compact Athermalizing Infrared Optical System[J].Acta Optica Sinica,2012,32(3):322003-216. | |
| Authors: | Qu Hemeng Zhang Xin Wang Lingjie Zhang Jizhen |
| Institution: | 1Key Laboratory of Optical System Advanced Manufacturing Technology,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun,Jilin 130033,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China |
| Abstract: | According to the requirements of good image quality, miniaturized dimension and high-temperature environmental adaptability in the applications of infrared search and track systems presently, a compact infrared catadioptric system structure is used, which base on the J-T cooler staring high-sensitivity focal plane array infrared detector comprised of 320×320 elements, to design a low F-number and compact athermalizing infrared system optical system. The ratio of total length and focal length is 0.6. A passive optical athermalization design is used for infrared optical systems, which makes the system athermalize in the temperature range of -40 ℃～60 ℃. The stray radiation in the system is also analyzed and a scheme to suppress the stray radiation is given. The results show that the modulation transfer function (MTF) (17 lp/mm) of optical system in all field of view approaches the diffraction limit at different temperature, and 80% energy concentrates in 1 pixel. The optical system has many advantages, such as compact structure, small volume and so on . It can meet requirement of imaging infrared search and track. |
| Keywords: | optical design infrared optical system catadioptric optical system athermalization stray radiation |
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