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Method for stabilizing the temperature dependency of light emission of an led

Abstract: Method for correction of the temperature dependency of a light quantity L emitted by a light emitting diode (LED), being operated in pulsed mode with substantially constant pulse duration tP, and measured in a light detector, using a predetermined parameter X, correlated to the temperature T of the LED in a predetermined ratio, whereby a correction factor K is determined from the parameter X, preferably using a calibration table, especially preferred using an analytic predetermined function, whereby the measured emitted light quantity L is corrected for the temperature contingent fluctuations of the emitted light quantity, whereby the parameter X is determined from at least two output signals of the LED, which are related to each other in a predetermined manner. (end of abstract)


Agent: Ip Strategies - Asheville, NC, US
Inventors: Stein Jurgen, Guntram Pausch, Karen Saucke, Guntram Pausch, Karen Saucke
USPTO Applicaton #: #20070295912 - Class: 250363010 (USPTO)
Related Patent Categories: Radiant Energy, Invisible Radiant Energy Responsive Electric Signalling, With Or Including A Luminophor, With Radiant Energy Source

Method for stabilizing the temperature dependency of light emission of an led description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20070295912, Method for stabilizing the temperature dependency of light emission of an led.

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