Patent ID: 6010747
Filing Date: 2000-01-04
Classification: G02B,G02F,G03B,Y10S,Y10T

Abstract:
A process for manufacturing a light diffusing structure, comprising the step of directing collimated or nearly-collimated light through a transparent or translucent substrate and into a layer of photopolymerizable material comprising a photopolymerizable component, a photoinitiator and a photoinhibitor, which layer has a bottom surface, adjacent to the substrate and a top surface, wherein said light is directed through the bottom surface toward the top surface for a period of time sufficient to photopolymerize only a portion of the photopolymerizable material to thereby form a lower photopolymerized portion said lower photopolymerized portion having a uniform thickness beneath a highly modulated surface in said layer of photopolymerizable material and an upper unphotopolymerized portion and thereafter removing the upper unphotopolymerized portion and not removing the lower photopolymerized portion.