折反射式空间相机光学系统设计与杂散光抑制

吕博; 冯睿; 寇伟; 刘伟奇

doi:10.37188/CO.2019-0036

Volume 13 Issue 4

Aug. 2020

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Article Contents

Chinese Optics > 2020 > 13(4): 822-831.

LÜ BO, FENG Rui, KOU Wei, LIU Wei-qi. Optical system design and stray light suppression of catadioptric space camera[J]. Chinese Optics, 2020, 13(4): 822-831. doi: 10.37188/CO.2019-0036

Citation:

LÜ BO, FENG Rui, KOU Wei, LIU Wei-qi. Optical system design and stray light suppression of catadioptric space camera[J]. Chinese Optics, 2020, 13(4): 822-831. doi: 10.37188/CO.2019-0036

LÜ BO, FENG Rui, KOU Wei, LIU Wei-qi. Optical system design and stray light suppression of catadioptric space camera[J]. Chinese Optics, 2020, 13(4): 822-831. doi: 10.37188/CO.2019-0036

Citation:

LÜ BO, FENG Rui, KOU Wei, LIU Wei-qi. Optical system design and stray light suppression of catadioptric space camera[J]. Chinese Optics, 2020, 13(4): 822-831. doi: 10.37188/CO.2019-0036

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Optical system design and stray light suppression of catadioptric space camera

doi: 10.37188/CO.2019-0036

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Funds: Supported by Equipment Pre-research of GF Project (No. GFZX0403260206)

More Information

Corresponding author: jllvbo@163.com
Received Date: 05 Mar 2020
Rev Recd Date: 19 Mar 2020
Publish Date: 01 Aug 2020

Abstract

Abstract

A lens group is used as an aberration correction group to solve the limited field of view angle and low imaging contrast at a large field of view in the coaxial two-mirror optical system. The lens group adopts reasonable optical power and pitch, it expands the field of view of two-reflection mirrors and improves imaging quality in the camera's full field of view. Taking an engineering application as an example, we design and develop an optical system with a 750 mm focal length, a field of view of 2ω=3.45°, an average transfer function better than 0.2 at 108 lp/mm, and an optimized design for its secondary mirror hood that suppresses stray light without a main mirror barrel hood. Simulation stray light was optimized by using TracePro software. The results show that the stray light Point Source Transmittance (PST) in the non-imaging field of view ranges from 10⁻³ to 10⁻⁶. The system meets the requirements for traditional ground target detection and imaging, the feasibility of a compact large-field refracting optical stray light suppression structure is verified, and a certain reference for the design and optimization of commercial coaxial refracting optical systems is provided.
- optical design,
- catadioptric,
- stray light suppression,
- Point Source Transmittance (PST)

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References(15)

References

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