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System and Method for Color Mixing Lens Array

  • US 20120068615A1
  • Filed: 03/31/2011
  • Published: 03/22/2012
  • Est. Priority Date: 08/20/2009
  • Status: Active Grant
First Claim
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1. An optical system comprising:

  • an array of LEDs, wherein each LED is disposed in an LED cavity;

    a set of lenses optically coupled to the LED array, wherein;

    each lens in the set of lenses is positioned to receive light from a corresponding LED and is separated from the corresponding LED by a gap;

    each lens in the set of lenses is configured to project light with a uniform profile in a selected half angle; and

    the lenses in the set of lenses are spaced so that illumination patterns from the lenses overlap to produce an overall illumination pattern in the selected half angle with an overlap area having a uniform color profile.

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