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Optical Engineering

Difference Holographic Interferometry: Displacement Measurement
Author(s): Z. Ftizessy; F. Gyimesi
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Paper Abstract

Measurement of deformation or shape differences of two objects is impossible in usual holographic interferometry. Difference holographic interferometry (DHI) overcomes the difficulties by producing a comparing technique for measurement of displacement fields and shapes of different objects and by being powerful in the case of large deformations. The main feature of DHI is that holographically recorded waves are used for illumination by wavefront reversal. It works without the need to consider different microstructures of object surfaces. A few realizations of the technique are presented.

Paper Details

Date Published: 1 December 1984
PDF: 4 pages
Opt. Eng. 23(6) 236780 doi: 10.1117/12.7973382
Published in: Optical Engineering Volume 23, Issue 6
Show Author Affiliations
Z. Ftizessy, Technical University Budapest (Hungary)
F. Gyimesi, Technical University Budapest (Hungary)

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