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Proceedings Paper

Design of a four-mirror optical system with wide field of view
Author(s): Shi-tong Liang; Jian-feng Yang; Bin Xue; Ping Ruan
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Paper Abstract

Reflective optics is used widely in space optical systems for their achromatization, large aperture and lightweight compared with refractive systems. Four-mirror system especially off-axis system is desired for its excellent imaging performance and compact structure. Aberration theory of coaxial four-mirror system based on PW method is analyzed and the design procedure is proposed to get the initial four-mirror system in this paper. A large field off-axis four-mirror system is designed based on the theory and the design process. The system contains four conic aspheric mirrors. It has a 2°×0.32° rectangular field of view. The MTF of the system is diffraction-limited and the distortion is less than 0.1%. The structure of the system is compact and the ratio of total axis length to focal length is about 1/3.9. The excellent imaging performance and compact structure make it adaptable to space remote sensing systems.

Paper Details

Date Published: 9 November 2010
PDF: 6 pages
Proc. SPIE 7849, Optical Design and Testing IV, 784930 (9 November 2010); doi: 10.1117/12.871717
Show Author Affiliations
Shi-tong Liang, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Jian-feng Yang, Xi'an Institute of Optics and Precision Mechanics (China)
Bin Xue, Xi'an Institute of Optics and Precision Mechanics (China)
Ping Ruan, Xi'an Institute of Optics and Precision Mechanics (China)

Published in SPIE Proceedings Vol. 7849:
Optical Design and Testing IV
Yongtian Wang; Julie Bentley; Chunlei Du; Kimio Tatsuno; Hendrik P. Urbach, Editor(s)

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