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Proceedings Article

Optical derotator for scanning vibrometer measurements on rotating objects

[+] Author Affiliations
Sebastian Boedecker, Alexander Dräbenstedt, Lars Heller, Andreas Leonhardt, Sergej Ristau, Christian Rembe

Polytec GmbH (Germany)

Arne Kraft, Christian Pape, Eduard Reithmeier

Univ. Hannover (Germany)

Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63450M (June 21, 2006); doi:10.1117/12.693066
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From Conference Volume 6345

  • Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
  • Ancona, Italy | June 19, 2006

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.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Topics

Scanning ; Prisms
Citation

Sebastian Boedecker ; Alexander Dräbenstedt ; Lars Heller ; Arne Kraft ; Andreas Leonhardt, et al.
"Optical derotator for scanning vibrometer measurements on rotating objects", Proc. SPIE 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 63450M (June 21, 2006); doi:10.1117/12.693066; http://dx.doi.org/10.1117/12.693066


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