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. 16, 2013
Filed:
Apr. 13, 2009
Jianhua Wang, Shanghai, CN;
Dennis C. Mackey, Hamilton, MA (US);
Jianyong Liao, Shanghai, CN;
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A photoelectric sensor and method for sensing a target at a predetermined location. The photoelectric sensor includes a light source that emits light, an output circuit including first and second photodetectors, and first and second receive lenses respectively positioned adjacent to the first and second photodetectors, respectively. If the target is at the predetermined location, then a first portion of the emitted light is received by the first photodetector after being reflected off of the target and passing through the first receive lens, and a second portion of the emitted light is received by the second photodetector after being reflected off of the target and passing through the second received lens. Further, the output circuit produces an output signal indicative of a sensed characteristic of the target based on signals generated by the first and the second photodetectors.