Active acoustic ripple cancellation for MEMS mirrors

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12223941
APP PUB NO 20230296879A1
SERIAL NO

17694845

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Abstract

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Systems, devices, and methods are described for mitigating or eliminating distortion patterns (such as those caused by one or more high-volume audio sources) in a display system such as a laser projection system. Frequency components of an incoming sound that correspond to one or more resonant frequencies of an optical reflector of the display system are determined to exceed a defined volume threshold. Responsive to that determination, a magnitude and phase of one or more harmonic motions of the optical reflector are measured. Sound waves are generated to destructively interfere with at least one frequency component corresponding to the resonant frequencies of the optical reflector.

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Patent Owner(s)

  • GOOGLE LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Deroche, Isaac James Kitchener, CA 5 0
Park, Sangtak Waterloo, CA 5 3

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