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Liquid crystal projection panel having microlens arrays, on each side of the liquid crystal, with a focus beyond the liquid crystal

  • US 5,398,125 A
  • Filed: 11/10/1993
  • Issued: 03/14/1995
  • Est. Priority Date: 11/10/1993
  • Status: Expired due to Term
First Claim
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1. A pixellated display projection panel, comprising:

  • a pixellated display comprised of a plurality of pixels providing an image forming plane between two optically transparent substrates;

    a first microlens array provided on one side of the display, the microlenses in the array corresponding to the pixels in the display, wherein the microlenses have focal lengths such that parallel light rays from a first direction entering the microlenses at an angle perpendicular to the first array are focused at points beyond the image forming plane of the display; and

    a second microlens array provided on the other side of the display, the microlenses in the array corresponding to the pixels in the display, wherein the microlenses have focal lengths such that parallel light rays from a direction opposite said first direction entering the microlenses at an angle perpendicular to the second array are focused at points beyond the image forming plane of the display.

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