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Display device

  • US 6,269,565 B1
  • Filed: 06/04/1997
  • Issued: 08/07/2001
  • Est. Priority Date: 11/28/1994
  • Status: Expired due to Fees
First Claim
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1. A viewing device for viewing transparencies comprising:

  • a display surface;

    a source of backlighting that backlights the display surface with linearly polarized light having a polarization axis;

    means for holding a transparency on the display surface;

    an optical sensor positioned so that it views the display surface; and

    a polarizer, having a polarizer axis, and situated between the display surface and the optical sensor, wherein the viewing device is configured such that the polarizer axis is functionally related to the polarization axis of the polarized light;

    wherein said polarizer is smaller than said display surface.

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