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Highly efficient LED lamp

  • US 20030137838A1
  • Filed: 12/11/2002
  • Published: 07/24/2003
  • Est. Priority Date: 05/08/2000
  • Status: Active Grant
First Claim
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1. A highly efficient LED lamp comprising:

  • an optical module including;

    at least one light emitting diode (LED) that emits light with a wide divergence;

    a non-imaging optical element (NIO) that includes a refractive member located around a LED optical axis and a total internal reflection member located around the refractive member, wherein the refractive member and the total internal reflection member are integrated in a single transparent element having a mutual focal point, wherein the NIO element collects a significant amount of light emitted by the LED with wide divergence located at the focal point, to compress the collected light with high efficiency into a beam with a generally different angular spread in a horizontal plane and a vertical plane and to direct the compressed light outside of the lamp; and

    a transparent window to transmit light outside of the lamp; and

    a housing having an electrical connector connected to an outside power source, the connector electrically connected to the LED.

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