LIGHT DIFFUSION PLATE AND METHOD FOR GENERATING ARRAY PATTERN OF OPTICAL ELEMENTS ON LIGHT DIFFUSION PLATE

摘要

A light diffusion plate (40) wherein optical elements (41) extending in a first direction are so formed as to be arrayed along a second direction perpendicular to the first direction on either a first and/or a second surface (40a, 40b), 100 groups of optical elements are selected such that combinations of the optical elements contained in the groups of optical elements each containing N consecutive optical elements in the second direction are different from one another, and the maximum occurrence frequency is equal to or lower than 50 times when the occurrence frequency of the width of the 100 groups of optical element in the second direction is counted for each N which is 8 to 14.