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:
Feb. 19, 2008
Filed:
Apr. 25, 2005
Jeffrey M. Singer, Fairborn, OH (US);
Brian J. Barnhart, New Carlisle, OH (US);
Steve M. Butsch, Maumee, OH (US);
Michael T. Vangeel, Pooler, GA (US);
Paul L. Summers, Troy, OH (US);
Scott R. Mangum, Dublin, OH (US);
Jeffrey M. Singer, Fairborn, OH (US);
Brian J. Barnhart, New Carlisle, OH (US);
Steve M. Butsch, Maumee, OH (US);
Michael T. Vangeel, Pooler, GA (US);
Paul L. Summers, Troy, OH (US);
Scott R. Mangum, Dublin, OH (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A system and method for implementing an LED-based luminaire () incorporates one or more color channels (-). The luminaire includes a controller () that uses optical sensing and feedback to control LEDs (A) in each channel to deliver a consistent intensity and/or color output. The optical feedback loop may provide measured intensity and/or color of the luminaire's output to the luminaire controller. The controller may then adjust the current, pulse width modulation (PWM) duty cycle, or both, which are delivered to discrete color channels of the luminaire to obtain the desired intensity and/or color.