RAINDROP DETECTOR

PROBLEM TO BE SOLVED: To provide a raindrop detector capable of correctly detecting whether or not a raindrop adheres to glass without being affected by external light. SOLUTION: A light emitting diode 101a and a phototransistor 103b are mounted on one side of this raindrop detector 100, and a photo...

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Bibliographische Detailangaben
Hauptverfasser:	KAGEYAMA HIDEAKI, TORIGOE AKIHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a raindrop detector capable of correctly detecting whether or not a raindrop adheres to glass without being affected by external light. SOLUTION: A light emitting diode 101a and a phototransistor 103b are mounted on one side of this raindrop detector 100, and a phototransistor 103a and a light emitting diode 101b are mounted on the other side thereof. In a line K-K, light generated from the diode 101a enters into a lens of a light guide body and is reflected on the vehicular outside surface of a windowpane, thereafter passes through the lens and is received by the phototransistor 103a. Similarly in a line J-J, light generated from the diode 101b enters into a lens of a light guide body and is reflected on the vehicular outside surface of the windowpane, thereafter passes through the lens and is received by the phototransistor 103b.