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Proceedings Paper

Misalignment wavefront detection of large segmented aperture optical system on-orbit
Author(s): Li-hong Lu; Wei Zhang
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Paper Abstract

The optical systems with large collecting aperture and high resolution are the future development directions of optical systems on orbit. The primary mirror of optical system is segmented for its advantages in reducing the difficulty of manufacturing to achieve high imaging resolution. Once on orbit, it needs to correct the misalignment errors in optical system introduced by the effect of various factors. The phase retrieval based on quasi-Newton method nonlinear optimization is proposed to sense the wavefront aberration induced by segmented mirrors in the optical system. And the BFGS method is utilized to seek the optimum value of wavefront aberrations. Then the different defocus impacted on detection accuracy is analyzed. The result of the simulation experiment indicated that once select the suitable defocus, the phase retrieval method can control the wavefront detection error less than 6%.

Paper Details

Date Published: 14 October 2010
PDF: 6 pages
Proc. SPIE 7654, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 765419 (14 October 2010); doi: 10.1117/12.865731
Show Author Affiliations
Li-hong Lu, Harbin Institute of Technology (China)
Wei Zhang, Harbin Institute of Technology (China)


Published in SPIE Proceedings Vol. 7654:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes

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