Abstract

The microstructural inspection of engine cylinder walls is an important task for quality management in the automotive industry. Until recently, mainly tactile methods were used for this purpose. We present an optical instrument based on microscopic fringe projection that permits fast, reliable, and nondestructive measurements of microstructure. The field of view is 0.8 mm × 1.2 mm, with a spatial sampling of 1100 × 700 pixels. In contrast to conventional tactile sensors, the optical method provides fast in situ three-dimensional surface characterizations that provide more information about the surface than do line profiles. Measurements are presented, and advantages of this instrument for characterization of a surface are discussed.

© 1999 Optical Society of America

Optical roughness measurements with fringe projection

Robert Windecker, Stefan Franz, and Hans J. Tiziani
Appl. Opt. 38(13) 2837-2842 (1999)

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Paul Wright, Charles A. Garcia-Stewart, Stephen J. Carey, Francis P. Hindle, Stephen H. Pegrum, Stephen M. Colbourne, Paul J. Turner, William J. Hurr, Tim J. Litt, Stuart C. Murray, Sam D. Crossley, Krikor B. Ozanyan, and Hugh McCann
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Optical frequency-domain imaging microprofilometry with a frequency-tunable liquid-crystal Fabry–Perot etalon device

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Three-dimensional vision based on a combination of gray-code and phase-shift light projection: analysis and compensation of the systematic errors

Giovanna Sansoni, Matteo Carocci, and Roberto Rodella
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