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LED light output linearization

  • US 8,013,541 B2
  • Filed: 07/31/2009
  • Issued: 09/06/2011
  • Est. Priority Date: 11/09/2007
  • Status: Active Grant
First Claim
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1. A system for powering an array of LEDs, comprising:

  • an array containing one or more light emitted diodes;

    a power source connected to the LED array wherein the power source provides drive current to the LED array; and

    a timer connected to a controller wherein the timer logs the on-time of the LED array and communicates the LED array on-time data to the controller, wherein controller is connected to the power source and automatically adjusts the intensity of the drive current provided to the LED array based on the on-time data received from the timer to achieve a resultant relative luminous output approximately equal to the initial relative luminous output.

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