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Proceedings Paper

Dimensional Metrology Of Large Objects By Projection Moire Techniques
Author(s): Luciano Pirodda
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Paper Abstract

The paper deals with the problem of dimensional testing of the limiting surfaces of objects having comparatively large frontal dimensions and transversal dimensions in the same order of magnitude.The solution is sought by an extension and generalization of the projection moire technique. A geometry is considered where two sets of curves are obtained by projecting a grid from a point light source over a master and test object respectively,while an optical system having central point at finite distance records them. The conditions are antyzed under which the moire fringes produced by the superposition of the two sets are the contours of the differences between the objects.

Paper Details

Date Published: 18 April 1978
PDF: 7 pages
Proc. SPIE 0136, 1st European Conf on Optics Applied to Metrology, (18 April 1978); doi: 10.1117/12.956179
Show Author Affiliations
Luciano Pirodda, Istituto di Meccanica (Italy)

Published in SPIE Proceedings Vol. 0136:
1st European Conf on Optics Applied to Metrology
Michel H. Grosmann; Patrick Meyrueis, Editor(s)

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