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Scanners with Risley Prisms: Modelling with Mechanical Design Programs

  • A. Schitea
  • I. Kaposta
  • M. Tuef
  • S.-C. Jurca
  • V.-F. Duma
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 18)

Abstract

Opto-mechanical scanners with Risley prisms (double optical wedges) are one of the most used scanning systems for applications that range from micro-mechanical endoscope probes to large optics for satellite positioning. The paper presents an exact modelling of the scan patterns produced using such systems, in a dedicated program for mechanical design—CATIA V5R20. This approach utilizes the characteristic parameters of scanners with Risley prisms: the ratio of the rotation velocities of the two wedges M = ω 2/ω 1 and the ratio of their apex k = θ 2/θ 1. The advantages of this method with regard to analytical solutions and with regard to approximate methods are pointed out. The similarities of this exact modelling of this type of scanners with the theory of mechanisms are highlighted. An experimental part validates the theoretical results. Driving solutions at the precision level required by these devices are presented.

Keywords

Optomechatronics Mechatronics Scanners Risley prisms Modeling Simulations Experiments Constructive solutions 

Notes

Acknowledgments

This work was supported by a grant of the Romanian National Authority for Scientific Research, CNDI–UEFISCDI project number PN-II-PT-PCCA-2011-3.2-1682.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • A. Schitea
    • 1
  • I. Kaposta
    • 1
  • M. Tuef
    • 1
  • S.-C. Jurca
    • 2
  • V.-F. Duma
    • 1
  1. 1.Aurel Vlaicu University of AradAradRomania
  2. 2.S.C. OK Tehnic Consult S.R.LAradRomania

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