Design of co-aperture optical system for space imaging and laser communication

JIN Guang; LI Yan-jie; ZHONG Xing; REN Bing-wen; WANG Chang-geng

doi:10.3788/OPE.20142208.2067

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Design of co-aperture optical system for space imaging and laser communication

更新时间：2020-08-13

- Design of co-aperture optical system for space imaging and laser communication
- Optics and Precision Engineering Vol. 22, Issue 8, Pages: 2067-2074(2014)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院大学北京,中国,100049
  3. 中国科学院长春光学精密机械与物理研究所小卫星技术国家地方联合工程研究中心,吉林长春,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142208.2067
  CLC： O435.2;TH703
- Received：16 January 2014，
  
  Revised：27 February 2014，
  
  Published：25 August 2014
- 稿件说明：
移动端阅览
金光, 李艳杰, 钟兴等. 空间成像与激光通信共口径光学系统设计[J]. 光学精密工程, 2014,22(8): 2067-2074

JIN Guang, LI Yan-jie, ZHONG Xing etc. Design of co-aperture optical system for space imaging and laser communication[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2067-2074
金光, 李艳杰, 钟兴等. 空间成像与激光通信共口径光学系统设计[J]. 光学精密工程, 2014,22(8): 2067-2074 DOI： 10.3788/OPE.20142208.2067.

JIN Guang, LI Yan-jie, ZHONG Xing etc. Design of co-aperture optical system for space imaging and laser communication[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2067-2074 DOI： 10.3788/OPE.20142208.2067.

摘要

针对空间成像系统与激光通信天线同时需要大口径光学系统而使卫星载荷质量增大的问题，提出了一种成像光学系统与收发合一激光通信天线共口径工作的新型光学系统。从像差理论出发，给出了以主次反射镜为共用部分、成像和通信工作在不同视场的共口径光学系统初始结构设计方法。实际设计了共口径光学系统，该系统口径为600 mm，次镜遮拦比为0.225，成像系统的传递函数在50 lp/mm时大于0.47，接近衍射极限；发射分系统波像差远小于λ/20，发射激光的最小束散角可达4 μrad，出射光斑质量良好；接收系统达到衍射极限，光斑远小于探测端面，满足探测要求。最后，进行了公差分析，给出了光学系统的装调方法。该设计通过共用主次镜减少了系统总质量和总体积，同时满足空间成像和激光通信系统的性能要求。

Abstract

Both space optical system and laser communicating antenna need a large aperture optical system

which increases the load of a satellite. This paper proposes a new co-aperture optical system for space imaging and laser communication to decrease the mass of the satellite. On the basis of primary aberration theory

the design method of initial configuration of the co-aperture optical system was presented

in which the imaging and communication share primary and secondary mirrors and work at different fields. A co-aperture optical system was designed with a primary mirror with a diameter of 600 mm and a secondary mirror with a obstruction ratio of 0.225. The system shows good imaging capability and its Modulation Transfer Function(MTF) for all field of view is more than 0.47

very close to the diffraction limitation. The RMS wavefront of the laser sending section is far less than λ/20

and the sending laser beam is in good quality with a least divergence angle about 4 μrad.The size of the light spot on the imaging surface is less than that of detecting surface

which satisfies the detecting request. Finally

the tolerance analysis was preformed and the assembling method was given. By sharing the primary and secondary mirrors

this design reduces the mass and volume of the system and satisfies the needs of space imaging and laser communication.

关键词

Keywords

references

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