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MULTIBEAM DIFFRACTION GRATING-BASED BACKLIGHTING

  • US 20150036068A1
  • Filed: 06/18/2014
  • Published: 02/05/2015
  • Est. Priority Date: 07/30/2013
  • Status: Active Grant
First Claim
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1. A multibeam diffraction grating-based backlight comprising:

  • a light guide to guide light from a light source;

    a multibeam diffraction grating at a surface of the light guide, the multibeam diffraction grating to couple out a portion of the guided light using diffractive coupling, the coupled out portion of the guided light being directed away from the light guide surface as a plurality of light beams, a light beam of the plurality having a different principal angular direction from other light beams of the plurality.

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