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PIXEL-SHIFTING PROJECTION LENS ASSEMBLY TO PROVIDE OPTICAL INTERLACING FOR INCREASED ADDRESSABILITY

  • US 20050134805A1
  • Filed: 12/23/2003
  • Published: 06/23/2005
  • Est. Priority Date: 12/23/2003
  • Status: Active Grant
First Claim
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1. A projection display system, comprising:

  • a pixelated display device;

    an illumination system that directs illumination light to the pixelated display device for display information to be imparted on the light; and

    a projection lens assembly that receives the light with imparted display information from the pixelated display device for projecting the light toward a display screen, the projection lens assembly including a pixel-shifting element that cyclically shifts between at least two positions within the projections lens assembly to form at the display screen at least two interlaced arrays of pixels, the pixel-shifting element including a fold mirror positioned within the projection lens assembly and in which the cyclic shifting of the pixel-shifting element includes cyclic tilting of the fold mirror.

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