轻小型中波红外连续变焦光学系统设计
Optical Design of Light-Small MWIR Continuous Zoom System
摘要
根据连续变焦理论模型, 编制连续变焦计算程序, 求得变焦系统初始解, 建立理想光学模型, 通过选材选型及迭代优化, 实现仅由 4片红外透镜及两片平面反射镜组成的中波红外连续变焦光学系统。该系统 F#为 4、工作波段为 3.7～4.8 .m、视场变化范围为 20°×16°～2.0°×1.6°、光学零件最大口径为 71 mm、零件总重 64 g, 系统包络为 172 mm×108 mm, 系统采用两个二元衍射面用于消色差, 通过材料合理配置及主动补偿实现系统消热差设计。该中波红外连续变焦光学系统重量轻、总长短、包络小, 在－40℃～＋60℃温度范围全视场成像质量良好。
Abstract
According to the theoretical model of continuous zoom optics, the continuous zoom calculation program is compiled, the initial solution of the zoom system is obtained, and the paraxial optical model is established. Through material selection and iterative optimization, a midwave-infrared continuous-zoom optical system consisting of only four infrared lenses and two planar mirrors was realized. The F number of the system is 4, the spectral range is 3.7.to 4.8 .m, the field of view (FOV) is 20°×16°.to.2.0°×1.6°, and the maximum aperture of lenses is 71.0 mm, the total weight of the lenses is 64 g, and the system envelope is 172 mm×108 mm. The system uses two binary surfaces for the achromatic. The athermalization design of the system was realized through the rational allocation of materials and active compensation. The medium wave infrared continuous zoom optical system has the advantages of light weight, short total length, small envelope, and good image quality in the temperature range of -40℃.to 60℃.
参考文献
[1] 张坤杰. 国外三代红外探测器制冷机的研究现状 [J]. 云光技术, 2020,52(1): 28-37.ZHANG Kunjie. Research status of three generation infrared detectorrefrigerators abroad[J]. YUN GUANG JI SHU, 2020, 52(1): 28-37.
[2] 陶纯堪. 变焦距光学系统设计 [M].北京: 国防工业出版社.1988. 52(1): 28-37. TAO C K. Zoom Focus Optics System Design[M]. Beijing: National ZHANG Kunjie. Research status of three generation infrared detector Defense Industry Press, 1988. refrigerators abroad[J]. YUN GUANG JI SHU, 2020, 52(1): 28-37.
[3] 宋菲君, 陈笑, 刘畅. 近代光学系统设计概论[M]. 北京: 科学出版社,2019.SONG Feijun, CHEN Xiao, LIU Chang. Introduction to Modern OpticalSystem Design[M]. Beijing: Science Press, 2019.
[4] 陈吕吉, 明景谦 , 马琳, 等. 四片式非制冷长波红外热像仪双视场光 2019. 学系统[J].红外技术 , 2010, 32(1): 25-28. SONG Feijun, CHEN Xiao, LIU Chang. Introduction to Modern Optical CHEN Lvji, MING Jingqian, MA Lin, et al. A four-piece dual field of System Design[M]. Beijing: Science Press, 2019. view optical system for LWIR thermal imager[J]. Infrared Technology,
[5] 张发平, 张华卫. 基于二元衍射面的长波无热化光学系统设计 [J].红外技术, 2020, 42(1):25- 29.ZHANG Faping, ZHANG Huawei. Design of long-wave athermaloptical system based on binary diffractions surface[J]. InfraredTechnology, 2020, 42(1): 25-29.
[6] 何红星, 赵劲松, 唐晗, 等. 一种高性能双视场长波红外光学系统[J].红外技术, 2017, 39(5): 394-398.HE Hongxing, ZHAO Jingsong, TANG Han, et al. High performance dualfields of view LWIR optical system[J]. Infrared Technology, 2017, 39(5):394-398
[7] 王春艳, 王志坚, 周庆才. 应用动态光学理论求解变焦光学系统补偿组凸轮曲线[J]. 光学学报, 2006, 26(6): 891-894.WANG Chunyan, WANG Zhijian, ZHOU Qingcai. Solving the cam curveof the compensating group about zoom lens using dynamic opticaltheory[J]. Acta Optica Sinica, 2006, 26(6): 891-894.
[8] 徐正奎, 于振龙, 王春兴, 等. 四片式 10×中波双视场光学系统设计和 WANG Chunyan, WANG Zhijian, ZHOU Qingcai. Solving the cam curve 分析[J].红外技术 , 2019, 41(9): 824-830. of the compensating group about zoom lens using dynamic optical XU Zhengkui, YU Zhenlong, WANG Chunxing, et al. Four-piece medium theory[J]. Acta Optica Sinica, 2006, 26(6): 891-894. wave dual field of view 10× optical system[J]. Infrared Technology, 2019,
唐晗, 李洪兵, 彭浪, 明景谦, 季振波, 浦恩昌, 杨增鹏, 毕晓川, 保开林, 郑万祥, 彭代东. 轻小型中波红外连续变焦光学系统设计[J]. 红外技术, 2023, 45(12): 1278. TANG Han, LI Hongbin, PENG Lang, MING Jingqian, JI Zhenbo, PU Enchang, YANG Zengpeng, BI Xiaochuan, BAO Kailin, ZHENG Wanxiang, PENG Daidong. Optical Design of Light-Small MWIR Continuous Zoom System[J]. Infrared Technology, 2023, 45(12): 1278.
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