Patent ID: 9304232
Filing Date: 2016-04-05
CPC Classification: G02B

Claim Text:
1. A sheet comprising: a polymeric material; light diffusing particles disposed in the polymeric material; and a non-random surface texture formed from unit structures on a surface of the sheet; wherein the surface texture comprises hemispherical structures, partial hemispherical structures, ellipsoidal structures, immersed spherical beads, ellipsoidal beads, “bell-shape” bump, complex lens shape structures, pyramidal structures, reversed pyramidal structures, or combinations comprising at least one of the foregoing; wherein the unit structures have an aspect ratio of 0.15 to 0.5 and a pitch of greater than or equal to 100 μm; wherein the light diffusing particles are present in an amount of 0.2% to 0.8% by weight based on a total weight of the sheet and wherein the sheet is a monolithic sheet and has a thickness of 0.5 mm to 4 mm.