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Structured Light Fringe Projection Setup Using Optimized Acousto-Optic Deflectors

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3 Author(s)
Samuel H. Dupont ; Univ. Lille Nord de France, Lille, France ; Jean-Claude Kastelik ; Michel Pommeray

This paper presents a tunable multistripe structured light projection setup employing a pair of in-house-developed high-efficiency acousto-optic deflectors (AODs). The system is tunable over a wide bandwidth of spatial frequencies of the stripes patterns. The setup is achieving a symmetric beam deflection around the optical axis of the projector without the use of additional optics thanks to a prismatic design of the deflectors. The AODs are based on tangential phase-matching, high-frequency anisotropic interaction in paratellurite ( TeO2). The use of such optimized AODs leads to a simple experimental configuration with increased dynamical characteristics of the stripes period; this feature is very useful for 3-D image reconstruction.

Published in:

IEEE/ASME Transactions on Mechatronics  (Volume:15 ,  Issue: 4 )