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Optical design for three sub-mirror sparse aperture with freeform surface
Author(s): Quanying Wu; Junliu Fan; Feng Wu; Daling Cai; Baohua Chen
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Paper Abstract

Sparse aperture optical system is arranged by a number of small apertures or reflective optical systems according to certain rules. It reduces the processing difficulty, the weight and the cost of the telescope system while its resolution is equivalent to that of a single-aperture telescope system. In this paper, the Cassegrain telescope system with three sub-mirror sparse aperture primary mirror as the spherical surface is used as the initial structure and optimized. The freeform surface is introduced into the sparse aperture optical system to increase the freedoms of optical design, balance aberrations and improve the imaging quality. On this basis, the three sub-mirror sparse aperture with freeform surface is designed and its image quality is analyzed.

Paper Details

Date Published: 5 November 2018
PDF: 6 pages
Proc. SPIE 10815, Optical Design and Testing VIII, 108150E (5 November 2018); doi: 10.1117/12.2500670
Show Author Affiliations
Quanying Wu, Suzhou Univ. of Science and Technology (China)
Junliu Fan, Suzhou Univ. of Science and Technology (China)
Feng Wu, Changzhou Institute of Technology (China)
Daling Cai, Suzhou Univ. of Science and Technology (China)
Baohua Chen, Suzhou Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10815:
Optical Design and Testing VIII
Yongtian Wang; Tina E. Kidger; Kimio Tatsuno, Editor(s)

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