Shape identification using phase shiftin
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C.J Tay; C Quan; H.M Shang
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Article
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1998
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Elsevier Science
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English
β 180 KB
A phase shifting technique using a Michelson interferometry system is presented and applied to surface contour measurement. Hyperbolic fringes are produced by the interference of two spherical wavefronts expanded from a beam expander. The fringe pattern is projected on an object surface and the defo