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Display panel with electrically-controlled waveguide-routing

  • US 5,544,268 A
  • Filed: 09/09/1994
  • Issued: 08/06/1996
  • Est. Priority Date: 09/09/1994
  • Status: Expired due to Term
First Claim
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1. An optical beam directing element comprising:

  • a solid material for conveying optical energy;

    at least a first electrically-conductive material forming a first electrode, said first electrode confronting said solid material;

    a pixel waveguide segment traversing said solid material along a plane of said solid material;

    a plurality of output waveguide segments traversing said solid material along said plane, at least one of said output waveguide segments being transverse to said pixel waveguide segment in a first intersection region;

    an active optical energy redirector being disposed adjacent said first intersection region, said active optical energy redirector to reflect optical energy from said pixel waveguide segment into said output waveguide segments upon selective application of an electrical field from said first electrode; and

    optical reflector means disposed at selected locations on said plane in line with said output waveguide segments for projecting optical energy out of said plane.

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