Optical derotator for scanning vibrometer measurements on rotating objects

Sebastian Boedecker; Alexander Dräbenstedt; Lars Heller; Arne Kraft; Andreas Leonhardt; Christian Pape; Sergej Ristau; Eduard Reithmeier; Christian Rembe

doi:10.1117/12.693066

21 June 2006 Optical derotator for scanning vibrometer measurements on rotating objects

Sebastian Boedecker, Alexander Dräbenstedt, Lars Heller, Arne Kraft, Andreas Leonhardt, Christian Pape, Sergej Ristau, Eduard Reithmeier, Christian Rembe

Author Affiliations +

Proceedings Volume 6345, Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; 63450M (2006) https://doi.org/10.1117/12.693066
Event: Seventh International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2006, Ancona, Italy

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.

Citation Download Citation

Sebastian Boedecker, Alexander Dräbenstedt, Lars Heller, Arne Kraft, Andreas Leonhardt, Christian Pape, Sergej Ristau, Eduard Reithmeier, and Christian Rembe "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 (21 June 2006); https://doi.org/10.1117/12.693066

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