Ultrasonic vibrations on a window in a lidar system

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United States of America Patent

PATENT NO 11846707
APP PUB NO 20210263153A1
SERIAL NO

17314539

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Abstract

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To clear the line-of-sight (LOS) on a window in a lidar system within a vehicle, ultrasonic transducers are physically attached to the interior surface of the window to remove debris. When debris is detected at the window, the ultrasonic transducers are directed to vibrate at an ultrasonic frequency thereby generating an ultrasonic wave which causes the debris to bounce off the window. In some scenarios, the ultrasonic transducers vibrate with a particular phase shift to generate a travelling wave that causes the debris to sweep across the window. Additionally, windshield wipers, spray from a nozzle, and/or a hydrophobic or oleophobic coating may be used in combination with the ultrasonic transducers to remove the debris from the window.

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Patent Owner(s)

Patent OwnerAddress
GLAS TRUST COMPANY LLC3 SECOND STREET SUITE 206 JERSEY CITY NJ 07311

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McWhirter, John E Winter Park, US 23 935

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