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:
May. 21, 2002
Filed:
May. 12, 1999
Yasuhiro Okamoto, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
A photoelectric switch which has a light source made up of elements and for emitting light, a projection lens a first optical fiber for guiding the light emitted from the light source and penetrating the projection lens into a detection position a detection light reception element a second optical fiber for guiding the light reflected from the detection position or the light penetrating the detection position into the detection light reception element and a monitor light reception element disposed at a position for receiving light between the projection lens and the incident end part of the first optical fiber According to the present invention, it is possible to provide a photoelectric switch capable of precisely monitoring the light transmission quantity if the transmissivity or reflectivity of an optical system changes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile