Micro concave-convex structure for optical body and display device

An optical body comprising:

• a concave-convex structure formed on a surface of a base material,
• wherein an average period of concavities and convexities of the concave-convex structure is equal to or shorter than a wavelength belonging to a visible light band,
• a standard deviation of differences between respective positions of bottom faces of all the concavities of the concave-convex structure in a normal direction of a flat surface of the base material and a median of the positions of all the bottom faces is greater than or equal to 25 nm, and
• a standard deviation of differences between respective positions of vertexes of all the convexities of the concave-convex structure in the normal direction of the flat surface of the base material and a median of the positions of all the vertexes is greater than or equal to 35 nm.