Patent · US Expired

Optical sensor

US6229613A · kind A · utility

2Cited by

3References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Norbert Hog · Appenweier, DE
Gebhard Michenfelder · Lichtenau, DE
Rainer Pientka · Achern, DE
Stefanie Lorenz · Baden-Baden, DE

Key dates

Filing date	Feb 1, 2000
Grant date	May 8, 2001
Priority date	—
Expiry date	Feb 1, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60S1/0881
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An optical sensor for detecting wetting of a surface in a motor vehicle, the optical sensor has a measuring segment which has at least one transmitter of electromagnet waves and at least one receiver of electromagnetic waves and in which a windshield is disposable so that when a layer of moisture forms on the windshield upon wetting from precipitation a wave propagation between the at least one transmitter and the at least one receiver changes and an output signal generated by the receiver changes, a housing disposable on an inside of the windshield and having a bottom face adapted to be in physical contact with the windshield, the bottom face of the housing being oval.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.