Design of middle infrared continuous zoom optical system with a large FPA

LUO Shou-jun; HE Wu-bin; LI Wen-hu; XU Ming-xuan

doi:10.3788/OPE.20122010.2117

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Design of middle infrared continuous zoom optical system with a large FPA

Article | 更新时间：2020-08-12

- Design of middle infrared continuous zoom optical system with a large FPA
- Optics and Precision Engineering Vol. 20, Issue 10, Pages: 2117-2122(2012)
- 作者机构：
  
  华北光电技术研究所北京,100015
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122010.2117
  CLC： TN216
- Received：09 May 2012，
  
  Revised：18 June 2012，
  
  Published：10 October 2012
- 稿件说明：
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骆守俊, 何伍斌, 李文虎, 徐明轩. 大面阵中波红外连续变焦光学系统设计[J]. 光学精密工程, 2012,20(10): 2117-2122

LUO Shou-jun, HE Wu-bin, LI Wen-hu, XU Ming-xuan. Design of middle infrared continuous zoom optical system with a large FPA[J]. Editorial Office of Optics and Precision Engineering, 2012,20(10): 2117-2122
骆守俊, 何伍斌, 李文虎, 徐明轩. 大面阵中波红外连续变焦光学系统设计[J]. 光学精密工程, 2012,20(10): 2117-2122 DOI： 10.3788/OPE.20122010.2117.

LUO Shou-jun, HE Wu-bin, LI Wen-hu, XU Ming-xuan. Design of middle infrared continuous zoom optical system with a large FPA[J]. Editorial Office of Optics and Precision Engineering, 2012,20(10): 2117-2122 DOI： 10.3788/OPE.20122010.2117.

摘要

针对制冷式大面阵640512凝视焦平面阵列探测器

设计了一套中波红外连续变焦光学系统。该系统由变焦系统和二次成像系统构成

包括7片透镜和2个反射镜组成的折叠光路。首先

根据变焦原理和专业光学设计软件给出了系统结构及其参数。然后

分析了系统的像质和冷反射效应。最后

验证了系统的性能指标。结果表明:该系统可以实现50~500 mm的连续变焦

变焦过程中目标景物始终清晰可见;系统在耐奎斯特频率处的全视场光学传递函数大于0.35

全视场畸变小于2%

无冷反射现象;具有分辨率高、热灵敏度高、像质好、变焦轨迹平滑等特点

基本满足设计要求。

Abstract

A mid-wavelength continuous zoom optical system was presented for a staring Focal Plane Array(FPA) infrared detector by cooling assembly. The optical system with an optical configuration of reflect mirror fold was composed of a zoom object lens system and a secondary imaging system including seven lenses and two reflectors. On the basis of zoom principles

the systemic structure and design parameters were given by using special optical design software

then the schematic diagram and imaging quality were investigated. Finally

the performance and indexes of the system were verified. The results indicate that the system can offer a 50-500 mm continuous zoom and 100% cold shield efficiency. Moreover

the Modulation Transfer Function (MTF) in whole fields at Nyquist frequency is over 0.35 and the whole field distortion is below 2%. These results show that the system is characterized by high resolution

thermal sensibility

excellent images and smooth zoom locus.

关键词

Keywords

references

GREALISH K, KACIR T, BACKER B, et al.. An advanced infrared thermal imaging module for military and commercial applications[J]. SPIE, 2005,5796:186-192.[2] 骆守俊,张浩,宋春鹏. 一种新型非制冷焦平面双视场红外光学系统[J]. 激光与红外, 2009,38(9): 965-968. LUO SH J, ZHANG H, SONG CH P. Novel dual field of infrared optical system for uncooled focal plane detector[J]. Laser & Infrared, 2009,38(9):965-968. (in Chinese)[3] RONTIS, SOLAZZO S, BLANCO A, et al.. An infrared zoom for space applications [J]. Planetary and Space Science, 2000, 48:523-528.[4] 许照东,刘欣,董涛. 机载高分辨连续变焦红外热像仪设计[J]. 红外与激光工程,2007,36(5):619-621. XU ZH D,LIU X,DONG T. Design of airbome high resolution and continuous magnification IR thermal imager[J].Infrared and Laser Engineering,2007,36(5):619-621. (in Chinese)[5] SINCLAIR R L. High magnification zoom lenses for 3-5 m application[J]. SPIE, 1998, 3429:11-18.[6] KIM H S, KIM C W, HONG S M. Compact mid-wavelength infrared zoom camera with 20∶1 zoom range and automatic athermalization[J]. Opt. Eng., 2002,41(7):1661-1667.[7] 郜洪云,熊涛,杨长城. 中波红外连续变焦光学系统[J]. 光学精密工程, 2007, 15(7):1038-1043. GAO H Y, XIONG T, YANG CH CH. Middle infrared continuous zoom optical system[J].Opt. Precision Eng., 2007, 15(7):1038-1043.(in Chinese)[8] 张良. 中波红外变焦距系统的光学设计[J]. 应用光学,2006,27(1):32-34. ZHANG L. Optical design for middle infrared zoom system [J].Journal of Applied Optics, 2006,27(1):32-34. (in Chinese)[9] 王海涛,郭良贤. 制冷型中波红外变焦镜头[J]. 红外技术,2007,29(1):8-11. WANG H T,GUO L X. Cooled thermal imaging mid-wavelength infrared zoom camera[J].Infrared Technology, 2007,29(1):8-11. (in Chinese)[10] SCHERR L M,ORLANDO H J, HALL J T, et al.. Narcissus considerations in optical designs for infrared staring arrays[J]. SPIE, 1996, 2864: 4422452.

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