Optical Surface Inspection Using A Transverse Speckle Detection Technique

A. Oulamara; G. Tribillon; M. Spajer; J. Duvernoy

doi:10.1117/12.947605

16 January 1989 Optical Surface Inspection Using A Transverse Speckle Detection Technique

A. Oulamara, G. Tribillon, M. Spajer, J. Duvernoy

Proceedings Volume 0954, Optical Testing and Metrology II; (1989) https://doi.org/10.1117/12.947605
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

Abstract

A method that achieves automatic measurements of the orthogonal components of the motion of optically rough surfaces is described. An optical set-un that implements a speckle rotation is used to extract the components of 2-D displacements, which are obtained from simultaneous data recording performed by a single 1-D CCD line. A temporal analysis of speckle patterns related with a given inspected area of a moving structure is then possible. The movement trajectory is reconstructed. The principle of the method and the experimental set-up are described. Experimental results are shown with a specific application to the deformations of a video film structure under directional traction and dynamic analysis of thermal deformations of mechanical parts.

Citation Download Citation

A. Oulamara, G. Tribillon, M. Spajer, and J. Duvernoy "Optical Surface Inspection Using A Transverse Speckle Detection Technique", Proc. SPIE 0954, Optical Testing and Metrology II, (16 January 1989); https://doi.org/10.1117/12.947605

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