[en] Non-contact optical measurement methods are essential tools in many industrial and research domains. A family of new non-contact optical measurement methods based on the polarization states splitting technique and monochromatic light projection as a way to overcome ambient lighting for in-situ measurement has been developed. Recent works on a birefringent element, a Savart plate, allow to build a more flexible and robust interferometer. This interferometer is a multipurpose metrological device. On one hand the interferometer can be set in front of a CCD camera. This optical measurement system is called a shearography interferometer and allows to measure micro displacements between two states of the studied object under coherent lighting. On the other hand by producing and shifting multiple sinusoidal Young’s interference patterns with this interferometer, and using a CCD camera, it is possible to build a 3D structured light profilometer.
Disciplines :
Physics
Author, co-author :
Blain, Pascal ; Université de Liège - ULiège > Département de physique > Optique - Hololab
Michel, Fabrice
Piron, Pierre ; Université de Liège - ULiège > Département de physique > Optique - Hololab
Renotte, Yvon ; Université de Liège - ULiège > Département de physique > Optique - Hololab
Habraken, Serge ; Université de Liège - ULiège > Département de physique > Optique - Hololab
Language :
English
Title :
Combining shearography and interferometric fringe projection in a single device for complete control of industrial applications
Publication date :
09 August 2013
Journal title :
Optical Engineering
ISSN :
0091-3286
eISSN :
1560-2303
Publisher :
International Society of Optical Engineering, Bellingham, United States - Washington
Volume :
52
Issue :
8
Pages :
0841021-7
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
MINT
Funders :
DGTRE - Région wallonne. Direction générale des Technologies, de la Recherche et de l'Énergie
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