| GAO Qing-jia,WANG Jian,SUN Qiang.Design of a compact athermalized infrared seeker[J].Optoelectronics Letters,2017,13(4):287-290 |
| Design of a compact athermalized infrared seeker |
| Author Name | Affiliation | | GAO Qing-jia | Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China
University of Chinese Academy of Science, Beijing 100049, China | | WANG Jian | Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China | | SUN Qiang | Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033, China |
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| Abstract: |
| In order to meet the application requirement of a certain long wavelength infrared (LWIR) seeker, a small volume, light weight and passively athermalized infrared (IR) objective is designed in this paper. The two-lens telephoto structure is adopted by merely using aluminum alloy as the housing material. By balancing the thermo-optical coefficient and thermal expansion coefficient of materials, an athermalized IR seeker with effective focal length of 90 mm and F number of 1.2 is achieved. The whole optical length is 75 mm, and the weight is only 234 g. The objective can remain fine imaging quality under temperature range from ?40°C to 60 °C, which is beneficial to the lightweight design of IR seekers. This work has been supported by the National Natural Science Foundation of China (Nos.11372309 and 61304017), and the Knowledge Innova- tion Program of the Chinese Academy of Sciences (No.YYYJ-1122). E-mail:wangj@ciomp.ac.cn |
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