同轴大压缩比大相对孔径相机的光学系统设计

吕博; 刘伟奇; 董得义

doi:10.3788/OPE.20202808.1651

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同轴大压缩比大相对孔径相机的光学系统设计

现代应用光学 | 更新时间：2020-08-14

- 同轴大压缩比大相对孔径相机的光学系统设计
- Optical system design for coaxial camera with large compression and large relative aperture
- 光学精密工程 2020年28卷第8期页码：1651-1660
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
  
  [ "吕博(1986-), 男, 吉林长春人, 博士, 助理研究员, 2015年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要从事光学系统设计方面的研究。E-mail:jllvbo@163.com" ]
  [ "刘伟奇(1958-), 男, 吉林长春人, 硕士, 研究员, 1988年于中国科学院长春光学精密机械研究所获得硕士学位, 主要空间目标成像、激光显示等方面的研究。E-mail:liuwq@163.com" ]
- 基金信息：
  
  国家重点基础研究发展计划资助项目(2016YFB0500100);民用航天预研项目(D040101);高分专项装备预研项目(GFZX0403260206)
- DOI：10.3788/OPE.20202808.1651
  中图分类号： O436
- 收稿日期：2020-04-02，
  
  修回日期：2020-04-24，
  
  录用日期：2020-4-24，
  
  纸质出版日期：2020-08-15
- 稿件说明：
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吕博, 刘伟奇, 董得义. 同轴大压缩比大相对孔径相机的光学系统设计[J]. 光学精密工程, 2020,28(8):1651-1660.

Bo LÜ, Wei-qi LIU, De-yi DONG. Optical system design for coaxial camera with large compression and large relative aperture[J]. Optics and precision engineering, 2020, 28(8): 1651-1660.
吕博, 刘伟奇, 董得义. 同轴大压缩比大相对孔径相机的光学系统设计[J]. 光学精密工程, 2020,28(8):1651-1660. DOI： 10.3788/OPE.20202808.1651.

Bo LÜ, Wei-qi LIU, De-yi DONG. Optical system design for coaxial camera with large compression and large relative aperture[J]. Optics and precision engineering, 2020, 28(8): 1651-1660. DOI： 10.3788/OPE.20202808.1651.

摘要

以近轴三反射镜消像差理论作为设计依据，采用小视场角偏置设置，使用一维倾斜平面镜将光路在主镜前折叠，优化设计了具有高压缩比的同轴大相对孔径成像光学系统。其中，相机焦距为2.5 m，像方

数为6.3，成像视场角为0.6°×0.3°，在91 lp/mm的空间频率下，400~900 nm可见光-近红外波段光学调制传递函数优于0.41，1 064 nm激光波段20 lp/mm时光学调制传递函数优于0.6，成像质量均接近衍射极限，全视场下成像一致性较好。光学系统长度具备小于1/5.6倍系统焦距、1.1倍主镜直径的高压缩比，三反射镜均为二次曲面且非离轴空间布局，不含有高次非球面系数，公差分析结果表明光学系统易于工程化实现，在多星组网的紧凑型商用成像测高光学相机领域具有广泛的应用前景。

Abstract

Based on the imaging three-mirror aberration theory as the design basis

using a small field angle offset setting and a one-dimensional inclined plane mirror to fold the optical path in front of the main mirror

a coaxial large relative aperture imaging optical system with a high compression ratio was optimized. The focal length of the camera is 2.5 m

the image

is 6.3

the imaging field of view angle is 0.6°×0.3°

and the optical transmission function in the visible-near infrared band of 400-900 nm is greater than 0.41 at the spatial frequency of 91 lp/mm. It is better than 0.6 at 20 lp/mm

the imaging quality is close to the diffraction limit

and the imaging consistency is high over the full field of view. The length of the optical system has a high compression ratio greater than 1/5.6 times the system focal length and 1.1 times the diameter of the main mirror. The three mirrors are all conic without high-order aspheric coefficients and non-off-axis spatial layout. The tolerance analysis shows thatthe optical system is easy to realize by engineering and has a wide application prospect in the field of compact commercial imaging altimetry optical cameras with multi-star networking.

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Keywords

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