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Proceedings Paper

Research on the sparse aperture configuration of pseudo-Golay6
Author(s): Quanying Wu; Lin Qian
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Paper Abstract

Sparse aperture optical systems use a reduced aperture area to synthesize optical performance of a filled aperture. The relative arrangement of sub-apertures is a key for the design of sparse aperture. Golay configurations are a series of sparse apertures which are nonredundant configurations and have uniform MTF. A novel sparse aperture configuration named pseudo-Golay6 is proposed, which is also nonredundant configuration. It is based on the analysis of one dimensional array arrangement and array optimization. The relative arrangement of the sub-apertures of pupil is similar with the Golay's. The sub-apertures are arranged on the sides of the equilateral triangle. It has advantage of simple configuration and uniform MTF. The arrangement of the sub-apertures is analyzed, and the MTF is also studied. Image simulation of the pseudo-Golay6 is developed, and it has been compared with the performance of Golay6. The results show that the array of pseudo-Golay6 is nonredundant and has uniform arrangement at the spatial frequency space. The sub-MTFs of pseudo-Golay6 are not overlap except at zero frequency. The cutoff spatial frequency is highest at the direction of π3, the cutoff spatial frequency is lowest at the direction of π6, . The practical effective diameter of pseudo-Golay6 is larger than that of Golay6 ,and the highest cutoff spatial frequency is higher than that of Golay6 with the same fill factor. At each different direction, the sub-MTF arrangement of pseudo-Golay6 is less uniform than that of Golay6.

Paper Details

Date Published: 21 November 2007
PDF: 8 pages
Proc. SPIE 6721, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 67210F (21 November 2007); doi: 10.1117/12.782723
Show Author Affiliations
Quanying Wu, Univ. of Science and Technology of Suzhou (China)
Soochow Univ. (China)
Lin Qian, Soochow Univ. (China)

Published in SPIE Proceedings Vol. 6721:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Yudong Zhang; Wenhan Jiang; Myung K. Cho, Editor(s)

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