SYSTEM AND METHOD FOR DETECTING SURFACE VIBRATIONS
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United States of America Patent
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Issued Date -
Nov 7, 2019
app pub date -
Jul 15, 2019
filing date -
Dec 27, 2014
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Abstract
A system for detecting vibrations from a surface is provided. The system includes a coherent light source for projecting a multi-beam pattern onto the surface and an imaging device for mapping a speckle field generated by each spot formed on the surface by the multi-beam pattern to a unique region of an imaging sensor. The system further includes a processor for processing speckle field information received by the imaging sensor and deriving surface vibration information.
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