An anti-reflection structure; includes: a plurality of convex parts arranged at pitches each of which is shorter than a wave length of a visible light ray, each of the convex parts being formed into one of a substantially truncated cone and a substantially truncated pyramid, each including: i) a base face formed into one of a base circle and a base polygon inscribed in the base circle, a) the base circle and b) the base circle circumscribing about the base polygon each having a base diameter Db meeting the following expression: 100 nm

 
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