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Proceedings Paper

Comparison of two stitching algorithms for annular subaperture Hartmann Shack testing method
Author(s): Hongyan Xu; Hao Xian; Yudong Zhang
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Paper Abstract

Annular subaperture stitching method is an effective method for testing aspheric surface. Two stitching algorithms for annular subaperture stitching method based on Hartmann Shack sensor are presented. The precision of the stitching algorithms is a major concern. The precision of the two algorithms are analyzed and compared in pertinent cases especially for the tested aspheric surface with different asphericity. The analysis shows that the phase stitching algorithm (PSA) can be used to reconstruct the whole-aperture wavefront for mild aspheric surface and the gradient stitching algorithm (GSA) can reconstruct the whole-aperture wavefront with high precision even for the steep aspheric surface with high noise level of gradient data.

Paper Details

Date Published: 9 November 2010
PDF: 7 pages
Proc. SPIE 7849, Optical Design and Testing IV, 78491Q (9 November 2010); doi: 10.1117/12.869612
Show Author Affiliations
Hongyan Xu, Institute of Optics and Electronics (China)
The Key Lab. on Adaptive Optics (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Hao Xian, Institute of Optics and Electronics (China)
The Key Lab. on Adaptive Optics (China)
Yudong Zhang, Institute of Optics and Electronics (China)
The Key Lab. on Adaptive Optics (China)


Published in SPIE Proceedings Vol. 7849:
Optical Design and Testing IV
Yongtian Wang; Julie Bentley; Chunlei Du; Kimio Tatsuno; Hendrik P. Urbach, Editor(s)

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