Anisotropic diffusing medium and production method therefor

摘要

In an anisotropic diffusing medium having a resin layer comprising a cured composition containing a photo-curable compound, an aggregation of plural pillar-shaped cured areas is formed inside the resin layer, the plural pillar-shaped cured areas all extend collimated to a specific direction P, and in the case in which the amount of each linear transmitted light corresponding to each incident light from all directions to an arbitrary input point on one side of the anisotropic diffusing medium are displayed by vectors beginning at an output point on the other side of the anisotropic diffusing medium corresponding to the input point to each direction of output, the rounded surface obtained by connecting the top of the vectors is a bell shaped rounded surface having a symmetric axis in direction P.