SYSTEMS AND METHODS FOR DETECTING FOREIGN BODIES ON A WINDOW

A droplet sensor system is configured to detect the presence of droplets or other foreign bodies on the surface of a window. The sensor system emits light rays that are coupled into the window, where the window serves as a waveguide that guides the confined electromagnetic radiation across the windo...

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Bibliographic Details
Main Authors TILLEMAN, Michael M, MALI, Girish
Format Patent
LanguageEnglish
French
German
Published 11.01.2023
Subjects
ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PERFORMING OPERATIONS
PHYSICS
SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
TESTING
TRANSPORTING
VEHICLES IN GENERAL
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Summary:A droplet sensor system is configured to detect the presence of droplets or other foreign bodies on the surface of a window. The sensor system emits light rays that are coupled into the window, where the window serves as a waveguide that guides the confined electromagnetic radiation across the window. Foreign bodies present on the surface of the glass outcouples a subset of the light as it propagates across the window, attenuating the power of outcoupled light measured at a photodetector mounted near an edge of the window. The system initiates a notification or a control action in response to detecting this attenuation of power due to outcoupling of the propagating light by foreign bodies.
Bibliography:Application Number: EP20190196217