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Proceedings Paper

Imaging geometry and error sensitivity in triangulation-based optical receivers
Author(s): Donald B.T. Kilgus; Donald J. Svetkoff
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Paper Abstract

Among basic design issues for laser-based triangulation systems are imaging geometry considerations which can seriously impact the 3-D measurement accuracy performance. Among these are numerical aperture, sensor orientation, telecentricity, and triangulation angle. While system designers specifying these parameters generally take into account certain first-order design objectives such as requirements for field-of-view and optoelectronic signal- to-noise, they may overlook other imaging error sources such as certain aberrations, defocus, multiple reflections, and measurement non-linearity which are equally integral to providing a high level of 3-D measurement accuracy. These errors are described here in relation to triangulation imaging geometry constraints, and corresponding design trade-offs to minimize the errors are discussed.

Paper Details

Date Published: 19 January 1996
PDF: 14 pages
Proc. SPIE 2599, Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology, (19 January 1996); doi: 10.1117/12.230370
Show Author Affiliations
Donald B.T. Kilgus, View Engineering, Inc. (United States)
Donald J. Svetkoff, View Engineering, Inc. (United States)

Published in SPIE Proceedings Vol. 2599:
Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology
Michael R. Descour; Kevin G. Harding; Donald J. Svetkoff, Editor(s)

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