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Proceedings Paper

Automation of the phase-map extraction by a moire technique in a Fizeau interferometer
Author(s): Benito Vasquez Dorrio; Angel F. Doval; Jose Carlos Lopez Vazquez; R. Soto; Jesus Blanco-Garcia; J. L. Fernandez; Mariano Perez-Amor
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Paper Abstract

The automation of the fringe pattern analysis of Fizeau interferences combining the Moire effect with the phase-stepping evaluation method is presented. In this case the phase modulator is a Ronchi grid placed at the interferometer's image plane forming a Moire image and the necessary phase-steps are obtained simply by translating the grid in its own plane, perpendicular to the optical axis. A detailed description of the Moire image formation as an incoherent superposition is developed. Measurements were carried out in a Fizeau interferometer built by the authors.

Paper Details

Date Published: 15 November 1994
PDF: 10 pages
Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); doi: 10.1117/12.194320
Show Author Affiliations
Benito Vasquez Dorrio, Univ. de Vigo (Spain)
Angel F. Doval, Univ. de Vigo (Spain)
Jose Carlos Lopez Vazquez, Univ. de Vigo (Spain)
R. Soto, Univ. de Vigo (Spain)
Jesus Blanco-Garcia, Univ. de Vigo (Spain)
J. L. Fernandez, Univ. de Vigo (Spain)
Mariano Perez-Amor, Univ. de Vigo (Spain)


Published in SPIE Proceedings Vol. 2248:
Optical Measurements and Sensors for the Process Industries
Christophe Gorecki; Richard W. T. Preater, Editor(s)

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