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Proceedings Paper

Sensitivity study in moire interferometry under spherical illumination
Author(s): Ramon Rodriguez-Vera; J. A. Rayas; Alejandrina Martinez
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Paper Abstract

In the present work, a simple moire interferometer, which commonly is sensitive to in-plane displacement, is studied. In contrast to traditional in-plane moire interferometric technique, we use two spherical wavefronts. This kind of illumination produces a sensitivity vector varying with the position. Therefore, it is capable of detecting in-plane and (a whitish) out-of-plane deformations due to the use of divergent beams. Uncertainty to each component of the displacement vector is calculated and discussed. It is shown each component of the sensitivity vector, which should be examined in the stage of planning an interferometric measurement experiment, have to minimize the required component uncertainty. This analysis is made for a flat and spherical object surface. Experimental results for the displacements of a rigid object are presented, which show the measured displacement components with the highest sensitivity.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.524845
Show Author Affiliations
Ramon Rodriguez-Vera, Ctr. de Investigaciones en Optica, A.C. (Mexico)
J. A. Rayas, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Alejandrina Martinez, Ctr. de Investigaciones en Optica, A.C. (Mexico)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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