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Hologram sheet and hologram observation sheet using same, and blinding device

  • US 20070070477A1
  • Filed: 06/29/2006
  • Published: 03/29/2007
  • Est. Priority Date: 07/04/2005
  • Status: Active Grant
First Claim
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1. A hologram sheet comprising:

  • a transparent substrate;

    a hologram layer formed on the transparent substrate and having a transmission type Fourier transform hologram region with a function of transforming a light beam incident from a point light source to a desired optical image; and

    a pressure-sensitive adhesive layer.

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