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OPTICAL INPUT DEVICE

  • US 20090128495A1
  • Filed: 11/20/2007
  • Published: 05/21/2009
  • Est. Priority Date: 11/20/2007
  • Status: Abandoned Application
First Claim
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1. An input device, comprising:

  • an optical waveguide having an input surface, a back surface substantially opposite the input surface, and a side surface therebetween, the input surface having a plurality of different input locations;

    one or more light sources positioned to introduce light into the optical waveguide, where a distortion of each different input location of the input surface causes a portion of light within the optical waveguide to exit from the optical waveguide at a different escape location of the side surface;

    one or more imaging sensors positioned and aimed to detect an escape location of a portion of light exiting from the side surface; and

    a translator to determine an input location corresponding to the escape location for each detected escape location.

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