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:
Sep. 16, 2003
Filed:
Nov. 03, 2000
Applicant:
Inventors:
Assignee:
Sunx Limited, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/186 ;
U.S. Cl.
CPC ...
G01N 2/186 ;
Abstract
A reflection type sensor includes a light emitting element emitting light to an object and including a plurality of LED chips disposed to be adjacent to each other and integrated into a package, and the LED chips emit light beams belonging to different wave bands. A light detecting element detects the light reflected on the object, and performs a photoelectric conversion for the light beams belonging to the different wave bands, thereby delivering a light signal. A light detecting circuit determines the presence or absence of the object on the basis of the light signal delivered from the light detecting element.