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:
Jun. 12, 2007
Filed:
Nov. 17, 2006
Jun Tarui, Kariya, JP;
Jun Tarui, Kariya, JP;
DENSO Corporation, Kariya, Aichi-pref., JP;
Abstract
A raindrop sensor for sensing water attached to a second surface of a transparent body includes a light emitting element, a light guide body, a light receiving element, and an abnormality determining device. The light emitting element is provided in a first surface side of the transparent body for emitting light toward the transparent body. The light guide body is mounted on a first surface of the transparent body for guiding the light. The light receiving element is provided in first surface side of the transparent body for receiving the reflected light, which is reflected by the second surface of the transparent body. The light receiving element outputs a signal based on an amount of the reflected light received. The abnormality determining device determines an abnormality of the light guide body by comparing a value indicated by the signal with an index value.