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Proceedings Paper

Investigation of tympanic membrane shape using digital holography
Author(s): Pavel Psota; Haimi Tang; Koohyar Pooladvand; Vít Lédl; Cosme Furlong; John J. Rosowski; Jeffrey T. Cheng
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Paper Abstract

The shape of the tympanic membrane (TM) plays an important role in sound transmission through the ear for hearing. Previously we developed a high-speed holographic system employing tunable wavelength laser for rapid TM shape measurement. However, the tunable laser illumination is not sufficient to measure the shape of the unpainted TM due to semi-transparency of the TM and short exposure time of the camera. This paper presents a new multiple angle illumination technique that allows us to use a single wavelength higher power laser to perform the shape measurement on the unpainted TM. We successfully applied the new shape measurement method on a fresh postmortem human TM without any paint.

Paper Details

Date Published: 30 December 2019
PDF: 7 pages
Proc. SPIE 11385, Optics and Measurement International Conference 2019, 113850G (30 December 2019); doi: 10.1117/12.2547924
Show Author Affiliations
Pavel Psota, Institute of Plasma Physics of the CAS, v.v.i. (Czech Republic)
Haimi Tang, Worcester Polytechnic Institute (United States)
Koohyar Pooladvand, Ctr. for Holographic Studies and Laser Micro-mechaTronics (United States)
Worcester Polytechnic Institute (United States)
Vít Lédl, Institute of Plasma Physics of the CAS, v.v.i. (Czech Republic)
Cosme Furlong, Worcester Polytechnic Institute (United States)
John J. Rosowski, Harvard Medical School (United States)
Jeffrey T. Cheng, Harvard Medical School (United States)

Published in SPIE Proceedings Vol. 11385:
Optics and Measurement International Conference 2019
Jana Kovačičinová, Editor(s)

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