Share Email Print
cover

Proceedings Paper • new

Optical design of off-axis three-mirror system with long focal length and wide field of view
Author(s): Lei Wang; Xuewu Fan; Dongwei Ni; Yuming Wang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

High resolution, wild field of view (FOV) and high image quality are required in space and airborne remote sensing and space photography. However, the refraction system must use special materials or complex structures to eliminate the secondary spectrum, the two-mirror system possesses limited degrees of freedom in correcting aberrations, and the coaxial system has serious central shielding problem in the case of wild FOV. According to geometry optical theory and primary aberration theory, an off-axis three-mirror (TMA)system with long focal length and wide FOV was designed based on the coaxial three-mirror systems. The spectral range is visible light range, the focal length is 5000mm, the FOV is 10°, and the relative aperture is 1:12. The primary mirror and the third mirror are aspheric surfaces while the second mirror is quadratic surface. In this system, the central shielding problem is solved and the modulation transform function (MTF) is more than 0.6 at Nyquist spatial frequency 50lp/mm which is close to the diffraction limitation. Moreover, the full field diffusion plaque is controlled into 5μm. In all, the analysis results show that the image quality and each specification of the off-axis three-mirror system satisfy the application requirements.

Paper Details

Date Published: 11 January 2019
PDF: 6 pages
Proc. SPIE 10837, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 1083710 (11 January 2019); doi: 10.1117/12.2504962
Show Author Affiliations
Lei Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Xuewu Fan, Xi'an Institute of Optics and Precision Mechanics (China)
Dongwei Ni, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)
Yuming Wang, Xi'an Institute of Optics and Precision Mechanics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 10837:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Xiaoliang Ma; Bin Fan; Yongjian Wan; Adrian Russell; Xiangang Luo, Editor(s)

© SPIE. Terms of Use
Back to Top