A new method for generation of non-diffraction grating structured light with phase shift

Fangyuan Zhou; Liping Zhou; Long Xu; Jianghong Gan; Wenlong Lu; Xiaojun Liu

doi:10.1117/12.2180931

6 March 2015 A new method for generation of non-diffraction grating structured light with phase shift

Fangyuan Zhou, Liping Zhou, Long Xu, Jianghong Gan, Wenlong Lu, Xiaojun Liu

Proceedings Volume 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation; 944626 (2015) https://doi.org/10.1117/12.2180931
Event: International Symposium on Precision Engineering Measurement and Instrumentation, 2014, Changsha/Zhangjiajie, China

Abstract

A new generation system for structured light is proposed here. This light has non-diffraction characteristic and is generated based on Mach-Zehnder interferometer together with optical wedge as the main optical element, which can realize phase shift easily. Theoretical analysis and ZEMAX simulation between the wedge angle and the strip phase shift are carried out. Experimental results show that the new structured light provided by this system has properties of long focal-depth, narrow strip-width, stable spatial sinusoidal density distribution and good contrast of fringe. The phase of the fringe can be shifted by adjusting the optical wedge’s position. The new structured light generated by this system has great advantages over traditional structured light on three-dimensional surface profile measurement which shows good application prospect.

Citation Download Citation

Fangyuan Zhou, Liping Zhou, Long Xu, Jianghong Gan, Wenlong Lu, and Xiaojun Liu "A new method for generation of non-diffraction grating structured light with phase shift", Proc. SPIE 9446, Ninth International Symposium on Precision Engineering Measurement and Instrumentation, 944626 (6 March 2015); https://doi.org/10.1117/12.2180931

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KEYWORDS

Structured light

Phase shifts

Mach-Zehnder interferometers

Optical components

Optical filters

Projection systems

Zemax

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