A proximity sensor including a housing, light emitters in the housing projecting light out of the housing along a detection plane, light detectors in the housing detecting amounts of light entering the housing along the detection plane, whereby for each emitter-detector pair (E, D), when an object is located at a target position p(E, D) in the detection plane, corresponding to the pair (E, D), then light emitted by emitter E is scattered by the object and is expected to be maximally detected by detector D, and a processor to synchronously activate emitter-detector pairs, to read the detected amounts of light from the detectors, and to calculate a location of the object in the detection plane from the detected amounts of light, in accordance with a detection-location relationship that relates detections from emitter-detector pairs to object locations between neighboring target positions in the detection plane.
OPTICAL PROXIMITY SENSOR AND ASSOCIATED USER INTERFACE
OPTISCHER NÄHERUNGSSENSOR UND ZUGEHÖRIGE BENUTZERSCHNITTSTELLE
CAPTEUR DE PROXIMITÉ OPTIQUE ET INTERFACE UTILISATEUR ASSOCIÉE
2018-08-15
Patent
Electronic Resource
English
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