Member having antireflection part, molding die for the member and method of manufacturing the die

反射防止部を有する部材、その成形型及び該成形型の製造方法

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member having an antireflection part reducing the effects of the incident angle of light, the curvature and area of the surface of the member, etc., and making the antireflection effect of the entire curved face uniform. <P>SOLUTION: At least a part of a virtual curved face 12 forming the member 10 has an antireflection part 11 composed of a minute cyclic recess-and-projection structure formed at a pitch not longer than the wavelength of light to be prevented from being reflected. The center lines of the recesses and projections 11a and 11b forming the antireflection part are made to almost coincide with the vector of the normal of the curved face 12 obtained through the calculation in which the antireflection part 11 is assumed not to be present. <P>COPYRIGHT: (C)2006,JPO&NCIPI
【課題】光線入射角,部材表面の曲率及び面積等の影響を軽減し、前記曲面全体における反射防止効果の均一化を図ることができる反射防止部を有する部材の提供を目的とする。 【解決手段】部材10を形成する仮想の曲面12の少なくとも一部に、反射防止対象となる光線の波長以下のピッチで形成した微細周期凹凸構造からなる反射防止部11を有し、該反射防止部を形成する個々の凹凸部11a,11bの中心線を、反射防止部11が存在しないと仮定したときの曲面12の法線ベクトルとほぼ一致させた構成としてある。 【選択図】 図1

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