Moly: a prototype hand-held 3-D digitizer with diffraction optics

Thomas Ditto; Douglas A. Lyon

doi:10.1117/1.602337

1 January 2000 Moly: a prototype hand-held 3-D digitizer with diffraction optics

Thomas Ditto, Douglas A. Lyon

Author Affiliations +

Optical Engineering, Vol. 39, Issue 1, (January 2000). https://doi.org/10.1117/1.602337

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 profilo- meter 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.

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Thomas Ditto and Douglas A. Lyon "Moly: a prototype hand-held 3-D digitizer with diffraction optics," Optical Engineering 39(1), (1 January 2000). https://doi.org/10.1117/1.602337

Published: 1 January 2000

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