Implantable interferometer microphone
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United States of America Patent
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Sep 6, 2011
Grant Date -
Jul 12, 2007
app pub date -
Jan 8, 2007
filing date -
Jan 9, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A prosthetic hearing device comprising a biocompatible housing having a surface that vibrates in response to sound waves traveling through tissue; and an interferometer mounted in the housing, the interferometer is constructed and arranged to generate a light beam that impinges on a reflective interior surface of the vibrating surface, and to receive light reflected from the reflective interior surface. The device detects ambient sound by impinging a light beam on a portion of the vibrating surface; receiving light reflected from the reflective portion; measuring the movement of the vibrating surface based on an interference pattern of the impinging and reflected light; and determining at least a frequency of the incident sound wave based on the interference pattern.
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