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Methods of cutting or forming cavities in a substrate for use in making optical films, components or wave guides

  • US 20050024849A1
  • Filed: 08/10/2004
  • Published: 02/03/2005
  • Est. Priority Date: 02/23/1999
  • Status: Abandoned Application
First Claim
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1. A method of making an optical film, component or wave guide that has multiple optical elements on at least one surface, and at least some of the optical elements have at least two surfaces that come together to form a ridge and are quite small relative to the length and width of the optical film, component or wave guide, comprising using a tool to cut or form multiple optical element shaped cavities in a surface of a substrate that is not perpendicular to the path of the tool during the cutting or forming process, wherein neither the tool nor the substrate is rotated about the axis of the tool during the cutting or forming process, and at least some of the cavities are cut or formed to have at least two surfaces that come together to form a ridge and that are quite small relative to the length and width of the substrate, and using the substrate to form the optical film, component or wave guide having the multiple optical elements on at least one surface corresponding to the cavities in the substrate.

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