DUN Xiong, MENG Jun-he, ZHANG Zhen, . Athermalised dual FOV LWIR telescope[J]. Journal of Applied Optics, 2011, 32(4): 767-772.
Citation: DUN Xiong, MENG Jun-he, ZHANG Zhen, . Athermalised dual FOV LWIR telescope[J]. Journal of Applied Optics, 2011, 32(4): 767-772.
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Athermalised dual FOV LWIR telescope

  • Tianjin Jinhang Institute of Technical Physics,Tianjin 300192,China

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    • Abstract
  • Switch-zoom dual field-of-view long-wave infrade (LWIR) telescopes are widely used in IR system，and they have the advantages of high transmission in narrow field view (FOV) and high resolution in wide FOV. This paper established the configuration of a switch-zoom dual FOV telescope, explained the athermalization theory of the switch-zoom dual FOV telescope, and designed a passively athermalised switch-zoom dual FOV LWIR telescope operating in 7.7 m~10.3 m. Diffractive surface and aspheric surface were used to improve the quality of optical system.The MTF was 0.45 @18 lp/mm at -55℃~+70℃. Finally, 2 other lenses were designed based on the designing result of the switch-zoom dual FOV telescope, which indicated that the configuration and arrangement of the passively athermalised switch-zoom dual FOV telescope are applicale in a variety of designs.
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    • References (1)
  • ［1］AKRAM M N. A step-zoom dual field-of-view IR telescope［J］. SPIE，2002,4832:328-333.
    ［2］XIONG Tao, YANG Chang-cheng. Long wavelength infrared dual field-of-view optical system［J］. SPIE，2007, 67222O: 1-6.
    ［3］吴晓靖，孟军和. 红外光学系统无热化设计的途径［J］，红外与激光工程，2003，32(6)：572-576.
    WU Xiao-jing, MENG Jun-he. Approach of athermalizing infrared optical systems［J］. Infrared and Laser Engineering, 2003, 32(6): 572-576. (in Chinese with an English abstract)
    ［4］吴晓靖，孙赤全，孟军和. 红外光学系统无热化设计与变焦距镜头的关系［J］，红外与激光工程，2002，31(3):249-252.
    WU Xiao-jing, SUN Chi-quan, MENG Jun-he. Relationship between athermalizing infrared optical system and zoom lens ［J］.Infrared and Laser Engineering, 2002, 31 (3): 249-252. (in Chinese with an English abstract)
    ［5］吴晓靖，孟军和. 使用简单机械结构实现红外光学系统无热化［J］.红外与激光工程，2005, 34(4)：16-18.
    WU Xiao-jing, MENG Jun-he. Approach of athermalizing infrared optical systems［J］. Infrared and Laser Engineering, 2003, 32(6): 16-18. (in Chinese with an English abstract)
    ［6］王学新，焦明印. 红外光学系统无热化设计方法的研究［J］.应用光学，2009,30(1):129-133.
    WANG Xue-xin, JIAO Ming-yin. Athermalization design for infrared optical systems［J］. Journal of Applied Optics,2009,30(1):129-133. (in Chinese with an English abstract)
    ［7］王学新，焦明印. 光学被动式和机电式组合消热差方法的研究［J］, 应用光学，2010,31(3):354-359.
    WANG Xue-xin, JIAO Ming-yin. Combination ofoptical passive and mechanical-electrical athermalisation ［J］. Journal of Applied Optics, 2010,31(3):354-359. (in Chinese with an English abstract)
    ［8］沈良吉，冯卓祥. 3.7 μm～4.8 μm波段折/衍混合红外光学系统的无热化设计［J］. 应用光学，2009, 30(4):154-158.
    SHEN Liang-ji, FENG Zhuo-xiang. Athermal design of refractive/diffractive hybrid infrared optical system working at 3.7μm～4.8μm ［J］. Journal of Applied Optics, 2009, 30(4):154-158. (in Chinese with an English abstract)
    ［9］LI Sheng-hui, YANG Chang-cheng. Optical passive athermalization for infrared zoom system［J］. SPIE，2007, 67224E:1-8.
    ［10］TAMAGAWA Y, WAKABAYASH S. New design method for athermalized optical systems［J］. SPIE，1992,1752:232-238.
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