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:
Mar. 24, 2009
Filed:
Feb. 23, 2006
George E. Rollins, Chelmsford, MA (US);
James E. Dogul, Hudson, NH (US);
Richard Galera, Nashua, NH (US);
Derek W. Jones, Kirkcudbright, GB;
George Schuster, Royal Oak, MI (US);
Suresh Nair, Amherst, NH (US);
Ray Delcher, Oxnard, CA (US);
George E. Rollins, Chelmsford, MA (US);
James E. Dogul, Hudson, NH (US);
Richard Galera, Nashua, NH (US);
Derek W. Jones, Kirkcudbright, GB;
George Schuster, Royal Oak, MI (US);
Suresh Nair, Amherst, NH (US);
Ray Delcher, Oxnard, CA (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
Systems and methods are disclosed that facilitate tolerating and/or correcting light beam misalignment in a light-emitting device, such as a light curtain. Attributes of the light beam can be assessed and compared to predetermined threshold values to evaluate whether the light beam is misaligned, and corrective feedback can be generated to adjust the position of one or more transmissive apertures generated on an LCD, through which light is permitted to pass, in order to re-align the light beam.