Patent ID: 8101282
Filing Date: 2012-01-24
Classification: G02B,Y10T

Abstract:
1. A method of making a diffuser comprising: 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 non-photopolymerizable second material that phase separates from the at least first material when the at least first material polymerizes; selectively irradiating the mixture of materials to polymerize a portion of the mixture of materials to form polymerized light diffusing protruded structures having optically rough, pitted rugged surfaces for emitting light therefrom; and removing that part of the mixture of materials not forming part of the structures; wherein the non-photopolymerizable material is selected from the group consisting of 4′-pentyl-4-biphenylcarbonitrile and polystyrene.