Automation of the phase-map extraction by a moire technique in a Fizeau interferometer

Benito Vasquez Dorrio; Angel F. Doval; Jose Carlos Lopez Vazquez; R. Soto; Jesus Blanco-Garcia; J. L. Fernandez; Mariano Perez-Amor

doi:10.1117/12.194320

15 November 1994 Automation of the phase-map extraction by a moire technique in a Fizeau interferometer

Benito Vasquez Dorrio, Angel F. Doval, Jose Carlos Lopez Vazquez, R. Soto, Jesus Blanco-Garcia, J. L. Fernandez, Mariano Perez-Amor

Author Affiliations +

Proceedings Volume 2248, Optical Measurements and Sensors for the Process Industries; (1994) https://doi.org/10.1117/12.194320
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

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.

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Benito Vasquez Dorrio, Angel F. Doval, Jose Carlos Lopez Vazquez, R. Soto, Jesus Blanco-Garcia, J. L. Fernandez, and Mariano Perez-Amor "Automation of the phase-map extraction by a moire technique in a Fizeau interferometer", Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); https://doi.org/10.1117/12.194320

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