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Proceedings Paper

Optical derotator for scanning vibrometer measurements on rotating objects
Author(s): Sebastian Boedecker; Alexander Dräbenstedt; Lars Heller; Arne Kraft; Andreas Leonhardt; Christian Pape; Sergej Ristau; Eduard Reithmeier; Christian Rembe
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Paper Abstract

In this paper we present an optical derotator for scanning vibrometer measurements on rotating objects. The main part of an optical derotator is a rotating prism. Several concepts are known from literature. We have chosen a Dove prism because it can derotate the rotation of the specimen by simply watching through the prism, which rotates with half the speed. The design of our derotator is presented in this paper as well as a discussion of the system performance. In addition we show experimental measurement results on a fan rotating with 3000 rpm.

Paper Details

Date Published: 21 June 2006
PDF: 11 pages
Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63450M (21 June 2006); doi: 10.1117/12.693066
Show Author Affiliations
Sebastian Boedecker, Polytec GmbH (Germany)
Alexander Dräbenstedt, Polytec GmbH (Germany)
Lars Heller, Polytec GmbH (Germany)
Arne Kraft, Univ. Hannover (Germany)
Andreas Leonhardt, Polytec GmbH (Germany)
Christian Pape, Univ. Hannover (Germany)
Sergej Ristau, Polytec GmbH (Germany)
Eduard Reithmeier, Univ. Hannover (Germany)
Christian Rembe, Polytec GmbH (Germany)


Published in SPIE Proceedings Vol. 6345:
Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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