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Optical Engineering

Incoherent Optical Correlator Using Projected Fringes Patterns
Author(s): T. Tschudi; H. P. Weber; A. Stadler
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Paper Abstract

An optical method to compare the shape and the contours of optically opaque test objects with those of a master is proposed, analyzed and demonstrated. A grid pattern is projected onto the test sample and the diffusely scattered light is imaged onto a mask, fabricated to yield zero transmission for ideal samples. Deviations in shape or depth from the master result in light transmitted through the mask. Resolution is in the range of a few micrometers.

Paper Details

Date Published: 1 August 1979
PDF: 3 pages
Opt. Eng. 18(4) 184387 doi: 10.1117/12.7972391
Published in: Optical Engineering Volume 18, Issue 4
Show Author Affiliations
T. Tschudi, University of Berne (Switzerland)
H. P. Weber, University of Berne (Switzerland)
A. Stadler, University of Berne. (Switzerland)


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