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System for adjusting a light source by sensing ambient illumination

  • US 7,919,937 B2
  • Filed: 07/12/2010
  • Issued: 04/05/2011
  • Est. Priority Date: 11/15/2006
  • Status: Expired due to Fees
First Claim
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1. A device for adjusting the illumination of an interior space, comprising:

  • a lighting fixture for receiving a phosphor-coated light source;

    means for detecting an illumination of the interior space;

    means for momentarily, partially, and substantially dimming the phosphor-coated light source for a period short enough to produce no visible flicker and for a period long enough to provide a portion where detection of a residual glow of the phosphor-coated light is minimized;

    means for measuring the illumination of the interior space only during the portion; and

    means for adjusting brightness of the phosphor-coated light source in response to the measured illumination of the interior space.

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