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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 8, Iss. 12 — Jun. 2, 2001
  • pp: 649–654

Enhancement of surface inspection by Moiré interferometry using flexible reference gratings

J. C. Martínez-Antón, H. Canabal, J. A. Quiroga, E. Bernabeu, M. Álvaro Labajo, and V. Cortés Testillano  »View Author Affiliations


Optics Express, Vol. 8, Issue 12, pp. 649-654 (2001)
http://dx.doi.org/10.1364/OE.8.000649


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Abstract

We have extended the use of shadow Moiré technique to be implemented in simple curved surfaces by using a flexible grating. Dynamic visual inspection of surface micro-damages is significantly favored by the use of well adapted pliable gratings compared to the use of flat reference gratings. The experimental set-up consists of a plastic foil with a printed Ronchi grating stretched between three points which adapts to any cylindrical or conical convex surface independently of the relative orientation grating/surface. Static quantification of defects profiles is also possible with an attached CCD camera. Visual detection of defects in the range of ~30 µm in depth is obtainable.

© Optical Society of America

OCIS Codes
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.6650) Instrumentation, measurement, and metrology : Surface measurements, figure
(150.3040) Machine vision : Industrial inspection
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics

ToC Category:
Research Papers

History
Original Manuscript: April 24, 2001
Published: June 2, 2001

Citation
Juan Carlos Martinez-Anton, H. Canabal, J. Antonio Quiroga, Eusebio Bernabeu, M. Alvaro Labajo, and V. Cortes Testillano, "Enhancement of surface inspection by Moiré interferometry using flexible reference gratings," Opt. Express 8, 649-654 (2001)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-8-12-649


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References

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