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Optical Film and Lighting Device Comprising the Same

  • US 20110044058A1
  • Filed: 05/04/2010
  • Published: 02/24/2011
  • Est. Priority Date: 11/06/2007
  • Status: Active Grant
First Claim
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1. An optical film comprising a base and a plurality of optical patterns having peak and valley portions formed on a surface of the base,wherein pitches of the optical patterns, heights of the peak portions and depths of the valley portions are irregular, and the optical patterns have a non-linear non-symmetrical arrangement structure in which the peak and valley portions are irregularly bent as viewed from top and side.

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