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Backprojection transparency viewer

  • US 6,246,450 B1
  • Filed: 07/09/1999
  • Issued: 06/12/2001
  • Est. Priority Date: 01/09/1997
  • Status: Expired due to Fees
First Claim
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1. A viewbox comprising:

  • a faceplate adapted for mounting a transparency thereon;

    a light modulator comprising a plurality of light valves which modulates light to fom a light pattern; and

    a projector which back-projects the modulated light pattern on the faceplate, such that the faceplate is back-lighted with a scaled version of the light pattern, wherein the plurality of light valves comprise a reflective LCA.

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