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High-efficient light engines using light emitting diodes

  • US 7,703,942 B2
  • Filed: 12/20/2006
  • Issued: 04/27/2010
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
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1. A light emitting apparatus comprising:

  • a radiation source for emitting short wavelength radiation;

    an optic device configured to receive short wavelength radiation emitted from the radiation source;

    a device for directing at least some of the short wavelength radiation emitted from the radiation source into the optic device;

    a first portion of the optic device having at least one aperture positioned to allow transfer of at least some of the short wavelength radiation emitted from the radiation source into the optic device; and

    a down conversion material receiving at least some of the short wavelength radiation directed into the optic device in one spectral region and emitting at least some of the received radiation in at least one other spectral region.

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