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:
Jul. 14, 2015
Filed:
Feb. 21, 2012
Anatoly G. Grinberg, Brighton, MA (US);
Wayne R. Foster, Tyngsborough, MA (US);
Anatoly G. Grinberg, Brighton, MA (US);
Wayne R. Foster, Tyngsborough, MA (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A system to test operation of an optical sensor is disclosed. The optical sensor includes one or more photosensitive devices configured to convert light to electrical signals. A test light source is included within the housing of the optical sensor. The test light source is periodically pulsed on to emit radiation at a sufficient intensity to saturate each of the photosensitive devices. Each of the photosensitive devices generates a signal corresponding to the intensity of light detected at that device. A logic circuit uses the signals corresponding to the intensity of light to identify whether each of the photosensitive devices is performing at an acceptable level.