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Light color and intensity adjustable LED

  • US 8,624,505 B2
  • Filed: 05/28/2010
  • Issued: 01/07/2014
  • Est. Priority Date: 05/28/2010
  • Status: Active Grant
First Claim
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1. An integrated photonic device comprising:

  • a plurality of light emitting diodes (LEDs);

    an optical transmission line coupled to the LEDs;

    a light detector coupled to the optical transmission line and configured to detect a light output data individually from each of the LEDs through the optical transmission line;

    a controller coupled to the light detector, wherein the controller contains a memory and a logic processor, the memory storing an algorithm and a predetermined light output value, the logic processors executing the algorithm based on the detected light output data, the predetermined light output value, and a user inputted value to perform the following steps;

    receiving, from the light detector, the detected light output data individually for each LED; and

    comparing, for each LED, the detected light output data with one of;

    an initial light output data of said LED, a light output data of said LED from a previous detection, the predetermined light output value, and the user inputted value; and

    a driver coupled to the controller, wherein the driver is configured to adjust, based on a comparison result from the controller, a current for each LED such that neighboring LEDs have uniform light outputs.

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