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Switchable hologram and method of producing the same

  • US 20010033402A1
  • Filed: 02/09/2001
  • Published: 10/25/2001
  • Est. Priority Date: 02/10/2000
  • Status: Abandoned Application
First Claim
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1. A method of making a holographic optical element, the method comprising:

  • providing a substrate for recording a hologram;

    illuminating the substrate with a first pair of light beams, wherein the first pair of light beams intersect within the substrate;

    illuminating the substrate with a second pair of light beams, wherein the second pair of light beams intersect within the substrate;

    wherein the first pair of light beams intersect at a region within the substrate where the second pair of light beams intersect.

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