Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Nicklas Ohlsson0
Tomas Christiansson0
Date of Patent
December 25, 2018
0Patent Application Number
153173600
Date Filed
June 22, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A device implements a method for detecting contamination of an FTIR-based panel. The apparatus generates projection signals representing detection lines that have propagated on a plurality of propagation paths by total internal reflection (TIR) inside a transmissive panel such that contamination on the panel surface causes attenuation (frustration) of at least one of the projection signals. The device generates a transmission value for each detection line in the transmissive panel, and determines the presence of contamination on the surface of the panel by comparing the transmission values according to at least one of the presented comparison techniques.
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