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Applied Optics

Applied Optics


  • Vol. 27, Iss. 22 — Nov. 15, 1988
  • pp: 4626–4630

Surface inspection via projection interferometry

Roger W. Wygant, Silverio P. Almeida, and Oliverio D. D. Soares  »View Author Affiliations

Applied Optics, Vol. 27, Issue 22, pp. 4626-4630 (1988)

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Projection fringe interferometry provides a useful technique for nondestructive surface analysis. Two beam interferometric fringes were projected onto a block of aluminum whose surface had various types of grooves cut into it. The fringes were digitized and analyzed via an automatic fringe tracking algorithm. Three-dimensional topographical maps of the surface’s microstructure are presented together with a statistical analysis of surface parameters including average roughness, height distributions, and the autocorrelation function.

© 1988 Optical Society of America

Original Manuscript: March 17, 1988
Published: November 15, 1988

Roger W. Wygant, Silverio P. Almeida, and Oliverio D. D. Soares, "Surface inspection via projection interferometry," Appl. Opt. 27, 4626-4630 (1988)

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