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Optical Engineering

Moly: a prototype hand-held 3-D digitizer with diffraction optics
Author(s): Thomas Ditto; Douglas A. Lyon
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Paper Abstract

A working handheld 3-D diffraction range finder, nicknamed Moly, is demonstrated. This prototype is distinguished by a far-field magnification feature that is made possible by use of chirped frequency diffraction grating optics that reverse the perspective foreshortening typical of conventional triangulation range finders. This new type of 3-D profilometer illuminates its target with a collimated laser projector that produces a rectangle-shaped sheet of light of uniform width at all working distances. Moly also employs dual magnetic wave detectors to facilitate freedom of movement for both the digitizing instrument and the subject. The instrument was designed primarily to digitize human faces and figures for applications in art and medicine.

Paper Details

Date Published: 1 January 2000
PDF: 10 pages
Opt. Eng. 39(1) doi: 10.1117/1.602337
Published in: Optical Engineering Volume 39, Issue 1
Show Author Affiliations
Thomas Ditto, DeWitt Brothers Tool Co., Inc. (United States)
Douglas A. Lyon, Univ. of Bridgeport (United States)


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