OPTICAL METHODS FOR SHAPE MEASUREMENT

Video-rate surface profiling with acousto-optic accordion fringe interferometry

[+] Author Affiliations
Michael S. Mermelstein

Massachusetts Institute of Technology, Lincoln Laboratory, 77 Massachusetts Avenue, Room 36-869, Cambridge. Massachusetts 02139

Daniel L. Feldkhun, Lyle G. Shirley

Massachusetts Institute of Technology, Lincoln Laboratory, 244 Wood Street, Lexington, Massachusetts 02420-9108

Opt. Eng. 39(1), 106-113 (Jan 01, 2000). doi:10.1117/1.602342
History: Received May 20, 1999; Revised Aug. 5, 1999; Accepted Aug. 5, 1999
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Abstract

A novel, solid state, structured-light projector is developed that can adjust the spatial phase and period of projected interference fringes with unprecedented speed, repeatability, and accuracy. The projector is applied to video-rate 3-D surface profilometry using accordion fringe interferometry (AFI), a phase-measuring multiresolution active triangulation technique. We present the theory of the technology, the characterization of our prototype, and the 3-D measurement results. © 2000 Society of Photo-Optical Instrumentation Engineers.

© 2000 Society of Photo-Optical Instrumentation Engineers

Citation

Michael S. Mermelstein ; Daniel L. Feldkhun and Lyle G. Shirley
"Video-rate surface profiling with acousto-optic accordion fringe interferometry", Opt. Eng. 39(1), 106-113 (Jan 01, 2000). ; http://dx.doi.org/10.1117/1.602342


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