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Luminaire control system and method

  • US 7,868,562 B2
  • Filed: 12/11/2007
  • Issued: 01/11/2011
  • Est. Priority Date: 12/11/2006
  • Status: Active Grant
First Claim
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1. A method for controlling one or more light-emitting elements (LEEs) driven by forward currents to generate a mixed light, said method comprising the steps of:

  • a) acquiring sensor data representative of the mixed light;

    b) providing setpoint data representative of a desired mixed light;

    c) transforming the sensor data into first data expressed in coordinates of a predetermined color coordinate system;

    d) transforming the setpoint data into second data expressed in coordinates of said predetermined color coordinate system;

    e) comparing the first and the second data and determining a difference between the first and the second data;

    f) adjusting said forward currents in response to the difference between the first and the second data in order to decrease the difference between said first data and said second data; and

    repeating steps a) through f) until an absolute value of said difference falls below a predetermined threshold.

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