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Diffuse multilayer optical assembly

  • US 7,924,368 B2
  • Filed: 12/08/2005
  • Issued: 04/12/2011
  • Est. Priority Date: 12/08/2005
  • Status: Expired due to Fees
First Claim
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1. An optical assembly comprising:

  • a light diffusing layer;

    a reflective polarizing layer attached to the light diffusing layer; and

    an intermediate region between the light diffusing layer and the reflective polarizing layer, the intermediate region including an intermediate structure that defines voids between the light diffusing layer and the reflective polarizing layer, and wherein the intermediate structure comprises a non-uniform surface on the reflective polarizing layer that is formed by a plurality of topographical features that extend into the intermediate region, wherein adjacent topographical features define the voids;

    wherein the non-uniform surface on the reflective polarizing layer comprises an average roughness of about 0.5 to 10 μ

    m.

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