| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antireflection structure having a high anti-reflection effect. <P>SOLUTION: The diffusion plate 1 includes a plurality of fine projections 20, 20, etc., regularly arrayed at intervals P. Each of the fine projections 20, 20, etc., is tapered from the base side toward the tip side, and adjacent to the other fine projection 20 while respective side circumferential surfaces 21 and 21 mutually intersect. In a recessed part 24 surrounded by the plurality of fine projections 20, 20, etc., the plurality of fine projections 20, 20, etc., are adjacently arranged so that all ridge lines 22, 22, etc., formed on the respective side circumferential surfaces 21, 21, etc., of the adjacent fine projections 20, 20, etc., are converged. <P>COPYRIGHT: (C)2009,JPO&INPIT |
