×

Elliptical diffusers used in displays

  • US 20060239629A1
  • Filed: 04/19/2006
  • Published: 10/26/2006
  • Est. Priority Date: 04/20/2005
  • Status: Active Grant
First Claim
Patent Images

1. A display apparatus comprising:

  • a light guide comprising substantially optically transmissive material that can propagate light therein, said light guide further comprising an output face for output of said light, said light output from said output face having an angular distribution;

    a plurality of anamorphic optical elements disposed forward of said front output face such that light from said output face of said light guide is incident on said anamorphic optical elements, said anamorphic optical elements redirecting said angular distribution along a first direction, y, more than in a second direction, x. a spatial light modulator forward said plurality of anamorphic optical elements to receive said light from said output face of said light guide; and

    an asymmetric diffuser disposed between said anamorphic optical elements and said spatial light modulator, said asymmetric diffuser configured to spread light incident thereon more along said second direction, x, than said first direction, y.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×