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Optical Engineering

Design of telecentric imaging systems for noncontact velocity sensors
Author(s): Christian Berger
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Paper Abstract

Optical sensors for noncontact velocity measurement require imaging systems with constant optical magnification in spite of the variable distance between the sensor and the object of measurement. This requirement can be met using telecentric systems. When such systems are set up, several design considerations must be taken into account. These concern the decision as to whether a single or a double telecentric system shall be used, as well as the choice of the optical magnification and the dimensioning of the aperture stop. The results of the theoretical analysis are confirmed by experiments with a prototype velocity sensor for belt drives.

Paper Details

Date Published: 1 October 2002
PDF: 8 pages
Opt. Eng. 41(10) doi: 10.1117/1.1504105
Published in: Optical Engineering Volume 41, Issue 10
Show Author Affiliations
Christian Berger, Univ. Karlsruhe (Germany)


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