Rain sensor

US7236249B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gebhard Michenfelder · Lichtenau, DE
• Guenther Riehl · Bühl, DE
• Manfred Burkart · Iffezheim, DE
• Klaus Roth · Ofterdingen, DE

Key dates

• Filing date: Jan 8, 1999
• Grant date: Jun 26, 2007
• Expiry date: Jan 8, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60S1/0822
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A rain sensor, for motor vehicles in particular, having one measuring distance with at least one transmitter and at least one receiver for electromagnetic waves (light waves), a windshield being arranged in the measuring distance, and the measuring distance influencing the wave propagation between the at least one transmitter and the at least one receiver in such a way that when a coating forms on the windshield, in particular as the result of wetting by precipitation, an output signal sensed by the receiver is changed. It is provided that the optical and electronic components of the rain sensor are mounted in a housing, a light conducting element forming a cover of the housing.