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LED with compound encapsulant lens

  • US 20070152231A1
  • Filed: 12/30/2005
  • Published: 07/05/2007
  • Est. Priority Date: 12/30/2005
  • Status: Active Grant
First Claim
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1. A light source, comprising:

  • an LEI emitter; and

    an encapsulant that at least partially surrounds the LED emitter;

    wherein the encapsulant includes an inner lens and an outer lens, the inner lens having a refractive index n1 and an outer curved surface, and the outer lens having a refractive index n2>

    n1, and an inner curved surface that substantially mates with the outer curved surface of the inner lens; and

    wherein the inner lens produces a first virtual image of the LED emitter and the outer lens produces a second virtual image of the first virtual image, the first virtual image being disposed betveen the LED emitter and the second virtual image.

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