Imaging geometry and error sensitivity in triangulation-based optical receivers

Donald B.T. Kilgus; Donald J. Svetkoff

doi:10.1117/12.230370

19 January 1996 Imaging geometry and error sensitivity in triangulation-based optical receivers

Donald B.T. Kilgus, Donald J. Svetkoff

Proceedings Volume 2599, Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology; (1996) https://doi.org/10.1117/12.230370
Event: Photonics East '95, 1995, Philadelphia, PA, United States

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.

Citation Download Citation

Donald B.T. Kilgus and Donald J. Svetkoff "Imaging geometry and error sensitivity in triangulation-based optical receivers", Proc. SPIE 2599, Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology, (19 January 1996); https://doi.org/10.1117/12.230370

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