Design of a four-mirror optical system with wide field of view

Shi-tong Liang; Jian-feng Yang; Bin Xue; Ping Ruan

doi:10.1117/12.871717

9 November 2010 Design of a four-mirror optical system with wide field of view

Shi-tong Liang, Jian-feng Yang, Bin Xue, Ping Ruan

Proceedings Volume 7849, Optical Design and Testing IV; 784930 (2010) https://doi.org/10.1117/12.871717
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Shi-tong Liang, Jian-feng Yang, Bin Xue, and Ping Ruan "Design of a four-mirror optical system with wide field of view", Proc. SPIE 7849, Optical Design and Testing IV, 784930 (9 November 2010); https://doi.org/10.1117/12.871717

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