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High efficiency light valve projection system with decreased perception of spaces between pixels and/or hines

  • US 5,300,942 A
  • Filed: 02/21/1991
  • Issued: 04/05/1994
  • Est. Priority Date: 12/31/1987
  • Status: Expired due to Fees
First Claim
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1. An electronic image projection system, comprising:

  • a light source;

    a light valve means for forming an image on which information can be present as pixels or lines, said light valve means including one of;

    a single light valve having perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines and real dead spaces between pixels, or lines defined by actual non-information bearing spaces between pixels or lines, anda plurality of light valves having at least one of real dead spaces between pixels or lines defined by actual non-information bearing spaces between pixels or lines and perceived dead spaces caused by presence of relatively darker pixels or lines adjacent to relatively lighter pixels or lines;

    means for projecting the image formed by said light valve means onto a viewing area; and

    means to substantially eliminate perception of perceived dead spaces and real dead spaces between pixels or lines in the image projected by the single light valve and to substantially eliminate perception of at least one of real dead spaces between pixels or lines and perceived dead spaces in the image projected by the plurality of light valves.

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