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Dual-beam symmetric illumination-observation TV holography system for measurements
Indian Institute of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
2001 (English)In: Optical Engineering: The Journal of SPIE, ISSN 0091-3286, E-ISSN 1560-2303, Vol. 40, no 12, p. 2780-2787Article in journal (Refereed) Published
Abstract [en]

The Leendertz dual-beam symmetric illumination-normal observation arrangement is widely employed for real time evaluation of in-plane displacement components as well as surface shape. Instead of observing along the optical axis, we have examined the Leendertz arrangement by observing the scattered light along the direction of the illumination beams, and imaged it as two separate images onto the photo sensor of a CCD camera. The interferometer is a combination of two channels, each of which measures independently and simultaneously the information pertaining to either the in-plane displacement component of a deformation vector, or the surface relief variation of a three-dimensional object. In addition, a summary of possible measurements that can be carried out from the present arrangement is also highlighted. Experimental results using a four-frame phase shifting technique are illustrated

Place, publisher, year, edition, pages
2001. Vol. 40, no 12, p. 2780-2787
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-11626Local ID: aa51a180-6f68-11db-962b-000ea68e967bOAI: oai:DiVA.org:ltu-11626DiVA, id: diva2:984576
Note
Validerad; 2001; 20060929 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Svanbro, AngelicaSjödahl, MikaelMolin, Nils-Erik

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