×

TURNING FILM, DISPLAY APPARATUS, AND PROCESS

  • US 20080310003A1
  • Filed: 06/13/2007
  • Published: 12/18/2008
  • Est. Priority Date: 06/13/2007
  • Status: Abandoned Application
First Claim
Patent Images

1. A light redirecting article for redirecting light toward a target angle, the light redirecting article comprising:

  • (a) an input surface for accepting incident illumination over a range of incident angles;

    (b) an output surface comprising a plurality of light redirecting structures each light redirecting structure having;

    (i) an exit surface sloping away from normal in one direction as defined by a first base angle P1 relative to the input surface; and

    (ii) a second surface sloping away from normal, in the opposite direction relative to the exit surface, as defined by a second base angle P2 relative to the input surface;

    wherein first and second surfaces are opposed to each other at an angle α

    that is in the range from 35 to 55 degrees;

    wherein the light redirecting article is formed from a material having an index of refraction less than 1.60; and

    wherein the target angle θ

    out is in the range from 5 to 25 degrees.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×