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Light emitting diode package assembly that emulates the light pattern produced by an incandescent filament bulb

  • US 7,964,883 B2
  • Filed: 02/26/2004
  • Issued: 06/21/2011
  • Est. Priority Date: 02/26/2004
  • Status: Active Grant
First Claim
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1. A light emitting diode package assembly for emulating the pattern of light produced by an incandescent filament bulb comprising:

  • a first subassembly and a second subassembly, each subassembly comprising a substrate having a front surface and a back surface, the substrates being disposed in back-to-back adjacency with a thermally conductive adhesive disposed between the back surfaces to form a heat sinking base having the respective front surfaces opposing each other, each of the front surfaces having an overlying dielectric layer disposed thereon, and each of the overlying dielectric layers having a reflective surface layer formed thereon;

    a plurality of LEDs disposed directly on each of the reflective surface layers;

    wherein edges of each reflective surface layer extend beyond edges of the LEDs disposed thereon; and

    a transverse reflecting element disposed on each overlying dielectric layer and configured to reflect a portion of the light emitted by each of the plurality of LEDs, wherein each transverse reflecting element is a cone, a truncated cone, or a barrel formed of two truncated cones.

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