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Method and system for feedback and control of a luminaire

  • US 20070108846A1
  • Filed: 10/12/2005
  • Published: 05/17/2007
  • Est. Priority Date: 10/12/2004
  • Status: Active Grant
First Claim
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1. A system for feedback and control of a luminaire including one or more light-emitting elements in one or more colours, each of the one or more light-emitting elements supplied with electrical current to produce light of a desired chromaticity and luminous flux under operating conditions, said system comprising:

  • a) a feedback system including one or more light sensors for detecting the light and generating light values, said feedback system generating current values representative of luminous flux and chromaticity of the light from the light values; and

    b) a control system operatively integrated with the feedback system, said control system determining an adjustment factor through a correlation of the current values and a desired chromaticity and luminous flux, said control system adjusting the electrical current to one or more light-emitting elements in accordance with said adjustment factor, said control system adjusting the electrical current without perceivable visual flicker or momentary chromaticity shifts.

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