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Collimating light from an LED device

  • US 7,230,280 B2
  • Filed: 05/27/2004
  • Issued: 06/12/2007
  • Est. Priority Date: 05/27/2004
  • Status: Active Grant
First Claim
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1. A Light Emitting Diode (LED) device, comprising:

  • a monolithic structure;

    an LED die encapsulated within the monolithic structure;

    a lens at one surface of the monolithic structure;

    a parabolic reflector at an outer surface of the monolithic structure that is opposite the lens;

    the lens, the parabolic reflector, and the LED die being configured such that light emitted from the LED die is reflected by the parabolic reflector past the LED die and towards the lens; and

    an I-beam leadframe that is an electrical conduit for the LED die, the I-beam leadframe having a height dimension that is larger than a width dimension, which accords the I-beam leadframe a narrow optical profile relative to light that passes parallel to the height dimension of the I-beam leadframe, the I-beam leadframe being oriented relative to the LED die, the lens, and the parabolic reflector such that light reflected from the parabolic reflector passes the I-beam leadframe parallel to the height dimension of the I-beam leadframe;

    wherein the I-beam leadframe includes a cathode having a first bend about a first axis and a second bend about a second axis, wherein the first and second axes are perpendicular to each other.

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