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Proceedings Paper

Video rate laser scanner: considerations on triangulation optics, detectors, and processing circuits
Author(s): Kees S. Kooijman; Jef L. Horijon
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Paper Abstract

This paper presents the design of a line scanner which simultaneously generates height and intensity data at video rate (10 MHz). The optical detection scheme uses double triangulation for height measurement. The telecentric scanning and small spot size provide a high lateral accuracy (20 micrometers ). Design rules are presented which facilitate an optimum selection of the position sensitive detectors (PSD). New technologies for PSD processing are described, enabling a significant performance improvement over conventional analogue or digital circuits. Height resolution (1:1000), and dynamic range (four decades) are limited only by the physical properties of the PSDs.

Paper Details

Date Published: 15 March 1994
PDF: 13 pages
Proc. SPIE 2065, Optics, Illumination, and Image Sensing for Machine Vision VIII, (15 March 1994); doi: 10.1117/12.169370
Show Author Affiliations
Kees S. Kooijman, Philips Ctr. for Manufacturing Technology (Netherlands)
Jef L. Horijon, Philips Ctr. for Manufacturing Technology (Netherlands)

Published in SPIE Proceedings Vol. 2065:
Optics, Illumination, and Image Sensing for Machine Vision VIII
Donald J. Svetkoff, Editor(s)

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