Patent ID: 7064894
Filing Date: 2006-06-20
Classification: G03B

Abstract:
1. A rear-projection screen, comprising: at least one light-scattering polymethyl methacrylate layer of thickness in the range from 0.05 to 4 mm comprising spherical plastic particles whose size is in the range from 5 to 35 μm at a concentration in the range from 2 to 60% by weight, based on the total weight of the light-scattering polymethyl methacrylate layer; wherein the refractive index of the spherical plastic particles differs from that of the polymethyl methacrylate layer by a value in the range from 0.02 to 0.2; wherein the concentration of the spherical plastic particles c the ratio of average surface roughness of the polymethyl methacrylate layer R