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:
Sep. 25, 2012
Filed:
Aug. 15, 2006
Jon K. Nisper, Grand Rapids, MI (US);
Michael J. Mater, Chelsea, MI (US);
Jon K. Nisper, Grand Rapids, MI (US);
Michael J. Mater, Chelsea, MI (US);
X-Rite, Inc., Grand Rapids, MI (US);
Abstract
A system () for sensing a temperature of a light emitting diode (LED). The system may comprise an LED having a spectral output centered at a first wavelength, a first filter () that transitions from attenuation to transmission at about the first wavelength, and a second filter () that transitions from transmission to attenuation at about the first wavelength. The system may also comprise a first sensor () positioned to sense a first intensity of the LED through the first filter and a second sensor () positioned to sense a second intensity of the LED through the second filter. It will be appreciated that a single sensor may be substituted instead of the first and second sensors, provided that the single sensor is capable of selectively viewing the LED through the first and the second filters. The system may also comprise a computer () configured to derive a temperature of the LED considering the first intensity and the second intensity.