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Imaging prevention method and system

  • US 20020171813A1
  • Filed: 01/28/2002
  • Published: 11/21/2002
  • Est. Priority Date: 05/16/2001
  • Status: Active Grant
First Claim
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1. An imaging prevention method for interfering unauthorized imaging of visual image projected on a screen, the imaging prevention method comprising:

  • projecting infrared light to a viewer/audience direction from at least one or more infrared light projector means, said at least one or more infrared light projector means being disposed at a rear side of the screen, whereby enabling said infrared light to be incident into imaging means of a person conducting the unauthorized act.

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