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Illumination systems utilizing wavelength conversion materials

  • US 8,096,668 B2
  • Filed: 01/16/2009
  • Issued: 01/17/2012
  • Est. Priority Date: 01/16/2008
  • Status: Expired due to Fees
First Claim
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1. An illumination system, comprising:

  • a tapered hollow light guide having an interior cavity, a light entrance aperture and a light exit aperture, the light entrance aperture having less area that the light exit aperture;

    wavelength conversion material located within the interior cavity of the hollow light guide; and

    a reflective layer formed along the walls of the interior cavity.

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