Sensing device for detecting wetness on a glass pane

US6744371B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Patrick Schmitt · Lichtenau, DE
• Norbert Hog · Appenweier, DE
• Andreas Gille · Laufenburg (Baden), DE
• Bruno Hodapp · Achern, DE
• Gebhard Michenfelder · Lichtenau, DE
• Rainer Pientka · Achern, DE
• Hans Meier · Ottersweier, DE
• Henry Blitzke · Laufenburg (Baden), DE
• Manfred Burkart · Iffezheim, DE

Key dates

• Filing date: Apr 17, 2002
• Grant date: Jun 1, 2004
• Expiry date: Apr 18, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60S1/0881
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A sensor arrangement for detecting a wetting, in particular a precipitation and dirt accumulation, on a window (13) is proposed, with at least one transmitter (14) and at least one receiver (15) for the transmitter light (17) emitted by the transmitters (14), where the transmitters (14) and receivers (15) are disposed on the vertex points of an imaginary trapezoid. As a result, the external dimensions of the sensor are reduced, the ratio of sensitive area (19) and base area (18) of the sensor is improved, and a coherent sensitive area is produced, where there is also space available for a receiving element of an automatic light control.