Patent ID: 9158040
Filing Date: 2015-10-13
Classification: B29C,G02B

Abstract:
1. An anti-reflection article in which minute concave portions are densely arranged and a gap between the adjacent minute concave portions is the shortest wavelength of a wavelength band or less of an electromagnetic wave for anti-reflection, wherein the minute concave portion is a microscopic hole, a standard deviation of depths of the minute concave portions varying in a range from 10 nm to 50 nm, wherein a plurality of grooves are formed in one of the minute concave portions so that the minute concave portion with the plurality of grooves and the minute concave portion with one lowermost point are mixed, wherein the minute concave portions are arranged in a non-matrix form in planar view, wherein, in at least a partial area of the anti-reflection article, a net-like parting line which surrounds each minute concave portion is formed, the net-like parting line being formed on a ridge portion between respective adjacent minute concave portions, the net-like parting line matching a Voronoi tessellation line having a centroid point on each minute concave portion in planar view as a generating point, and wherein an earthenware mortar-shaped concave portion group is formed by (i) a central minute concave portion and (ii) a plurality of peripheral minute concave portions, each of the plurality of peripheral minute concave portions being formed adjacent to the central minute concave portion such that the plurality of peripheral minute concave portions surround the central minute concave portion, the plurality of peripheral minute concave portions having a substantially same depth that is shallower than a depth of the central minute concave portion.