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:
Nov. 28, 2000
Filed:
Apr. 02, 1999
Applicant:
Inventor:
Shuhei Tanaka, Osaka, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318483 ; 318642 ; 318480 ; 318D / ; 1535117 ; 307 91 ; 307 101 ; 307 108 ;
Abstract
A water drop detection sensor for detecting water drops W adhering to or present upon a windshield by detecting changes in an amount of reflection light and also for detecting the ambient brightness outside of a car or other vehicle, comprising: a windshield 2; a light emitting means 5 for introducing detection light into the windshield 2; and a light receiving means 6 for detecting reflected detection light. The reflected detection light is reflected by total internal reflection within the windshield 2, and the light emitting means 5 and said light receiving means 6 are provided on the windshield 2.