Patent ID: 7768602

Claim:
A light diffusing article, comprising: (a) an organic or inorganic polymeric sheet-like substrate that is optically clear with a refractive index of from 1.4 to 1.8; and (b) one or more layer of one or more coating composition on at least one surface of the substrate, wherein a given layer of coating composition comprises solid, clear polymeric lenses, wherein the polymeric lenses in a given layer of coating composition are either: (i) divergent lenses having a focal length of −0.5 μm to −15 μm, and a continuous refractive index gradient such that the refractive index at the centers of the lenses is lower than the refractive index at the surface of the lenses; or (ii) convergent lenses having a focal length of from 2.5 μm to 74 μm and a continuous refractive index gradient such that the refractive index at the centers of the lenses is greater than the refractive index at the surface of the lenses; wherein each layer has a thickness of less than 375 μm, and wherein the polymeric lenses have a diameter of 0.85 to 30 μm.