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Proceedings Paper

Comparison between LCOS projector and DLP projector in generating digital sinusoidal fringe patterns
Author(s): Beiwen Li; John Gibson; Jill Middendorf; Yajun Wang; Song Zhang
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Paper Abstract

Digital-light-processing (DLP) and liquid-crystal-on-silicon (LCOS) are two digital projection technologies which enjoy great popularity. This paper will demonstrate the performance of the two technologies in generating digital sinusoidal fringe patterns in the two following ways: focused-sinusoidal-patterns (FSP) method and defocused-binary-patterns (DBP) method. Experiment shows that for the FSP method, LCOS projector is a better choice since nonlinear gamma effect is less significant and there is no need for precise synchronization; While for the DBP method, DLP projector has the advantage over LCOS projector since the generated images have higher contrast ratio.

Paper Details

Date Published: 6 September 2013
PDF: 8 pages
Proc. SPIE 8839, Dimensional Optical Metrology and Inspection for Practical Applications II, 883908 (6 September 2013); doi: 10.1117/12.2022225
Show Author Affiliations
Beiwen Li, Iowa State Univ. (United States)
John Gibson, Bethune-Cookman Univ. (United States)
Jill Middendorf, Iowa State Univ. (United States)
Yajun Wang, Iowa State Univ. (United States)
Song Zhang, Iowa State Univ. (United States)


Published in SPIE Proceedings Vol. 8839:
Dimensional Optical Metrology and Inspection for Practical Applications II
Kevin G. Harding; Peisen S. Huang; Toru Yoshizawa, Editor(s)

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