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OPTICAL DIFFUSING SHEET, OPTICAL DEFLECTING SHEET, AND TRANSMISSION TYPE SCREEN

  • US 20090190211A1
  • Filed: 01/11/2006
  • Published: 07/30/2009
  • Est. Priority Date: 01/11/2005
  • Status: Active Grant
First Claim
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1. An optical diffusing sheet for use in a transmission type screen that emits imaging light projected from an incident side to an emergent side, comprising:

  • a highly rigid substrate layer with a light-transmissibility and a high rigidity; and

    two or more layers laminated on the highly rigid substrate layer, the layers including at least a pair of anti-scattering layers disposed on opposite sides of the highly rigid substrate layer for preventing scattering of the high rigid substrate layer;

    wherein at least one layer of the two or more layers includes an optical diffusing element that diffuses imaging light.

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