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:
Jan. 11, 2011
Filed:
Dec. 11, 2007
Marc Salsbury, Vancouver, CA;
Ian Ashdown, West Vancouver, CA;
Duncan L. B. Smith, Surrey, CA;
Shane P. Robinson, Gibsons, CA;
Ingo Speier, Saanichton, CA;
Marc Salsbury, Vancouver, CA;
Ian Ashdown, West Vancouver, CA;
Duncan L. B. Smith, Surrey, CA;
Shane P. Robinson, Gibsons, CA;
Ingo Speier, Saanichton, CA;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The present invention provides a system and method for controlling one or more light-emitting elements which are driven by forward currents to generate mixed light for use, for example, through a luminaire. The system has one or more light sensors for acquiring feedback optical sensor data and a user interface for providing reference data representative of a desired mixed light. The system also has a controller for transforming either the sensor data or the reference data into the coordinate space of the other and to determine a difference between the sensor and the reference data in that coordinate space. The controller is configured to adjust the forward currents during operating conditions so that the sensor data matches the setpoint data. The present invention also provides a system and method that can at least partially compensate certain temperature induced effects when transforming the optical sensor or the reference data.