LIGHT DIFFUSION PLATE FOR TRANSMISSION TYPE SCREEN

摘要

PURPOSE:To improve the performance of a light diffusion plate by incorporating crosslinked org. polymer particles having a refractive index difference within a specific range from a transparent resin and having an average grain size within a specific range into the transparent resin. CONSTITUTION:The crosslinked org. polymer particles consisting of the average grain size Dd and refractive index Nd satisfying the equations I, II are dispersed tat 0.2-20wt.% into the transparent resin having a refractive index Nm. Crosslinked org. polymer particles essentially consisting of methacrylate/acrylate/ arom. vinyl are most preferable as the crosslinked org. polymer particles for their good controllability of the refractive index and grain size and good weatherability. The light diffusion plate for the high-performance transmission type screen is thereby obtd.