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Light emitting diode-light guide coupling apparatus

  • US 8,066,417 B2
  • Filed: 08/28/2009
  • Issued: 11/29/2011
  • Est. Priority Date: 08/28/2009
  • Status: Active Grant
First Claim
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1. An apparatus for coupling a light emitting diode (LED) to a light guide and adapted to mount within a base of a compact fluorescent lamp (CFL) assembly, the apparatus comprising:

  • an LED for emitting light in at least a first direction;

    a light guide having a proximal end positioned adjacent the LED for receiving light emitted therefrom, and a distal end remotely spaced from the proximal end from which light exits the light guide; and

    a coupler interposed between the LED and the proximal end of the light guide for transferring a high ratio of light from the LED to the light guide, the coupler including one of a parabolic or aspheric inner reflector surface having a narrow first end at least partially encompassing the LED and a wide second end that at least partially encompasses the proximal end of the light guide.

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