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A Measurement System for Otoscopic Spectroscopy in vivo

  • G. Heeke
Conference paper
  • 205 Downloads
Part of the Springer Series in Optical Sciences book series (SSOS, volume 31)

Abstract

In · connection with holographic interferometry for investigating the vibration patterns of human tympanic membranes, spectroscopic properties of the eardrum are of practical interest. When using a ruby laser system for double-exposure holography, the wavelength is fixed. However, continous wave lasers with different wavelengths are used for real-time vibration analysis methods such as electronic speckle pattern interferometry. In this case it is possible to choose an optimum wavelength to maximize the energy reflected. A large amount of backscattered light is desirable for two reasons:
  • the possibility of photobiological effects on the eardrum is minimized

  • the picture quality of interferograms increases with the strengths of the lighting.

Keywords

Tympanic Membrane Holographic Interferometry Electronic Speckle Pattern Interferometry Backscatter Light Relative Reflection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    ANGUS, B.: A Scanning Spectrophotometer — Design and Applications, Optical Spectra, 8, (1980). Fig.4 reprinted with permission (modified).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • G. Heeke
    • 1
  1. 1.Ear-Nose-Throat-Clinic Medical Acoustics and Biophysics LaboratoryUniversity of MünsterMünsterFed. Rep, of Germany

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