Diffusers and methods of manufacture

Details Diffusers and methods of manufacture Diffusers and methods of manufacture

2006-05-24

2010-11-30

Sample, David R (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

C428S158000, C359S599000, C362S617000, C362S618000, C362S619000, C362S627000, C362S628000, C362S629000

Reexamination Certificate

active

07842376

ABSTRACT:
Diffusers including of a plurality of protruded structures with each structure containing multiple rugged facets are disclosed. The diffuser may be fabricated by coating a mixture of materials on a carrier film, the mixture of materials including at least a first material that polymerizes upon irradiation and at least a second material that is incompatible with the first material in polymerized form, then selectively irradiating the mixture of materials to polymerize a portion of the mixture of materials to form polymerized structures, and finally removing that part of the mixture of materials not forming part of the structures. A transparent material may be coated over the structures. The overcoat material may further contain scattering elements such as glass beads or polymeric particles.

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