ANTI-REFLECTION STRUCTURE, AND MANUFACTURING METHOD FOR THE SAME

• Main Authors: SAKAMOTO HIROSHI, SAWADA TOSHIAKI, IKEDA YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 19.02.2015
• Subjects: OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

PROBLEM TO BE SOLVED: To provide an anti-reflection structure excelling in suppression of reflection and resistance to scratches.SOLUTION: In an anti-reflection structure 10 having periodic convexo-concave parts 20 on its surface, any random convex 21-1, which is not the outermost convex 21, and six convexes 21-2 to 21-7 whose total of distances from the random convex 21-1 is the smallest are so arranged that: (1) between each of four convexes 21-2, 21-3, 21-5 and 21-6 out of six convexes 21-2 to 21-7 and the random convex 21-1, there is a linking part 23, in a position lower than the apex 21a of the convex 21 but higher than the bottom point 22a of the concave 22, to link the convexes, and (2) between each of the remaining two convexes 21-4 and 21-7 of the six convexes 21-2 to 21-7 and the random convex 21-1, there is a concave 22. 【課題】低反射性及び耐擦傷性に優れた反射防止構造体を提供すること。【解決手段】周期的な凹凸部２０を表面に有する反射防止構造体１０において、最外側の凸部２１を除く任意の凸部２１−１と、該任意の凸部２１−１からの距離の合計が最短の６個の凸部２１−２〜２１−７とは、（１）６個の凸部２１−２〜２１−７のうちの４個の凸部２１−２、２１−３、２１−５、２１−６のそれぞれと任意の凸部２１−１との間に凸部２１の頂点２１ａよりも低く凹部２２の底点２２ａよりも高い位置で凸部同士を連結する連結部２３が存在し、（２）６個の凸部２１−２〜２１−７のうちの残りの２個の凸部２１−４、２１−７のそれぞれと任意の凸部２１−１との間に凹部２２が存在するように配置されることを特徴とする。【選択図】図２