The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 28, 2006
Filed:
Jul. 03, 2002
Helmut Sautter, Ditzingen, DE;
Helmut Sautter, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An optical sensor () for recording wetting of a surface () of a member (), especially a window of a motor vehicle, having a transmitter (), a receiver () and a retroreflector () for electromagnetic waves is proposed. The surface () of the member () has for this at least two sensing regions ('), which are exposed to electromagnetic waves originating from the transmitter () and coupled into the member () in a central region (), the development of wetting on the sensing regions () effecting a change of the signal of the electromagnetic waves coupled out into the receiver () in the central region (). For this, the retroreflector () is developed and positioned in such a way that it feeds back electromagnetic waves reflected by the surface () of the member () to the surface () of the member (), and from there into the central region ().