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PROJECTION DISPLAY DEVICES EMPLOYING FRUSTRATED TOTAL INTERNAL REFLECTION

  • US 20090141336A1
  • Filed: 11/30/2007
  • Published: 06/04/2009
  • Est. Priority Date: 11/30/2007
  • Status: Abandoned Application
First Claim
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1. A projection display device comprising:

  • an optical interface;

    a microelectromechanical system including an array of movable elements corresponding to image pixels, each movable element being movable toward the optical interface to locally frustrate total internal reflection at the optical interface and movable away from the optical interface to not locally frustrate total internal reflection at the optical interface;

    a light source arranged to illuminate the optical interface at an angle effective for producing total internal reflection at the optical interface; and

    an optical projector system arranged to project one but not both of;

    light from the light source that undergoes total internal reflection at the optical interface, andlight from the light source that is frustrated by the movable elements from undergoing total internal reflection at the optical interface.

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