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LED collimation optics with improved performance and reduced size

  • US 20020080615A1
  • Filed: 12/22/2000
  • Published: 06/27/2002
  • Est. Priority Date: 12/22/2000
  • Status: Active Grant
First Claim
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1. An LED module comprising an LED (light-emitting diode) and a rotationally symmetrical, bowl-shaped collimator lens which comprises an inner refractive wall, an outer reflective wall, a first surface having an entrance aperture with a recess in which the LED is situated and which collimator lens is also provided with a second surface from which light generated by the LED emerges, wherein the LED module also includes one or more of the following structures (1) a conic wall portion of the recess of the inner refractive wall at the entrance aperture that includes a curved portion, and an outer reflective wall so configured in accordance with the structure of said inner refractive wall to achieve substantial collimation of a source of light at the entrance aperture;

  • (2) a first surface of the lens that is recessed away from the LED source (3) two surfaces of said refractive wall between which the refractive function of the lens is divided.

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