MULTIBEAM DIFFRACTION GRATING-BASED BACKLIGHTING
First Claim
Patent Images
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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Abstract
Multibeam diffraction grating-based backlighting includes a light guide and a multibeam diffraction grating at a surface of the light guide. The light guide is to guide light from a light source. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling and to direct the coupled out portion away from the light guide as a plurality of light beams with different principal angular directions.
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Citations
15 Claims
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1. A multibeam diffraction grating-based backlight comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A three-dimensional (3-D) electronic display comprising:
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a plate light guide to guide light from a light source; a multibeam diffraction grating to couple out a portion of the guided light as a plurality of light beams and to direct the light beams in a corresponding plurality of different principal angular directions; and a light valve array to modulate the differently directed light beams of the plurality, wherein the plurality of modulated, differently directed, light beams are a pixel of the electronic display, different ones of the modulated differently directed light beams corresponding to different views of the 3-D electronic display. - View Dependent Claims (10, 11, 12, 13)
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14. A method of electronic display operation, the method comprising:
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guiding light in a light guide; diffractively coupling out a portion of the guided light using a multibeam diffraction grating at a surface of the light guide to produce a plurality of light beams; and directing the plurality of light beams away from the light guide surface, wherein a light beam of the plurality has a different principal angular direction from other light beams of the plurality. - View Dependent Claims (15)
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Specification