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Proceedings Paper

Reference wavefront reconstruction based on spatial light modulator
Author(s): Nie Liang; Mengmeng Hu; Rongli Guo; Shaojun Lu
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Paper Abstract

The aspheric technology has been largely restricted by testing methods. In particular, the acquisition of the dynamic measurement for different aspheric surface is still a challenge. The reconstruction of the reference wavefront based on spatial light modulator is studied in this paper. Computer-generated hologram is been loaded into the SLM and the standard wavefront is reconstructed. Considering the effect of the SLM grid structure on wavefront accuracy, the theory model of SLM diffraction is analyzed and the elimination methods of SLM structure influence are proposed. Then based on theory analysis, the reconstructed wavefront is demonstrated by using computer simulation. Finally, the corresponding experimental apparatus is built and the wavefront accuracy is analyzed. The experiment results show that the method has achieved worthy measurement precision and has great development potential for optical shape measurement.

Paper Details

Date Published: 17 November 2010
PDF: 7 pages
Proc. SPIE 7848, Holography, Diffractive Optics, and Applications IV, 78482N (17 November 2010); doi: 10.1117/12.870319
Show Author Affiliations
Nie Liang, Xi'an Technological Univ. (China)
Mengmeng Hu, Xi'an Technological Univ. (China)
Rongli Guo, Xi'an Technological Univ. (China)
Shaojun Lu, Xi'an Technological Univ. (China)

Published in SPIE Proceedings Vol. 7848:
Holography, Diffractive Optics, and Applications IV
Yunlong Sheng; Chongxiu Yu; Linsen Chen, Editor(s)

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