Please use this identifier to cite or link to this item: http://dx.doi.org/10.18419/opus-4370
Authors: Seitz, Günther
Tiziani, Hans J.
Title: Resolution limits of active triangulation systems by defocusing
Issue Date: 1993
metadata.ubs.publikation.typ: Zeitschriftenartikel
metadata.ubs.publikation.source: Optical engineering 32 (1993), S. 1374-1383
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-61972
http://elib.uni-stuttgart.de/handle/11682/4387
http://dx.doi.org/10.18419/opus-4370
Abstract: In active triangulation systems, one side of the triangulation triangle is made up of a spatial light structure of well-known shape and location, causing a pattern on the surface of the target object. The other side of the triangle is embodied by ray bundles, imaging this pattern onto a position sensor. Because nearly all surfaces show scattering characteristics between specular and diffuse reflection, the corresponding image-forming wavefronts are not of uniform amplitude, and so the irradiance of the imaging pupil is also nonuniform. If the imaging is done by an aberrated system, this can cause deviations from the image as predicted by geometric optics. An estimate of deviations resulting from defocusing by treating the imaging process in terms of scalar diffraction theory, using a linear model for nonuniform pupil irradiance is given.
Appears in Collections:07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik

Files in This Item:
File Description SizeFormat 
tiz140.pdf2,11 MBAdobe PDFView/Open


Items in OPUS are protected by copyright, with all rights reserved, unless otherwise indicated.