×

Polarization arrangement

  • US 6,764,181 B2
  • Filed: 05/16/2002
  • Issued: 07/20/2004
  • Est. Priority Date: 05/18/2001
  • Status: Active Grant
First Claim
Patent Images

1. An optical system comprising:

  • (a) a light modulating panel comprising a plurality of pixels, said pixels having a pixel size which defines an acceptable blur at the panel;

    (b) a projection lens for forming an image of the light modulating panel, said projection lens and said acceptable blur defining a depth of focus D in imager space; and

    (c) a tilted polarization splitter located between the light modulating panel and the projection lens;

    wherein the overall structure of said polarization splitter is suitable for mounting the splitter in the optical system and wherein the splitter comprises a substrate having a thickness T such that the astigmatism introduced by the splitter when mounted at its tilted angle using said overall structure is less than or equal to D.

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