Investigation of tympanic membrane shape using digital holography

Pavel Psota; Haimi Tang; Koohyar Pooladvand; Vít Lédl; Cosme Furlong; John J. Rosowski; Jeffrey T. Cheng

doi:10.1117/12.2547924

30 December 2019 Investigation of tympanic membrane shape using digital holography

Pavel Psota, Haimi Tang, Koohyar Pooladvand, Vít Lédl, Cosme Furlong, John J. Rosowski, Jeffrey T. Cheng

Proceedings Volume 11385, Optics and Measurement International Conference 2019; 113850G (2019) https://doi.org/10.1117/12.2547924
Event: Optics and Measurement 2019 International Conference, 2019, Liberec, Czech Republic

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.

Citation Download Citation

Pavel Psota, Haimi Tang, Koohyar Pooladvand, Vít Lédl, Cosme Furlong, John J. Rosowski, and Jeffrey T. Cheng "Investigation of tympanic membrane shape using digital holography", Proc. SPIE 11385, Optics and Measurement International Conference 2019, 113850G (30 December 2019); https://doi.org/10.1117/12.2547924

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