Antifogging member

An antifogging member having a concave and convex surface defined from a convex portion and a concave portion, wherein

• a Fourier-transformed image obtained by performing a two-dimensional fast Fourier-transform processing on an observation image of the concave and convex surface shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 μm−1,
• the convex portion and the concave portion extend in random directions as viewed in plan view,
• an average pitch of concavities and convexities in the concave and convex surface is in a range of 50 to 250 nm,
• a contact angle of water on a flat and smooth surface formed from a material forming the concave and convex surface is not more than 90°,
• the concave and convex surface is defined from a plurality of convex portions and a concave portion surrounding the plurality of convex portions, and
• a total of perimeters of convex portions included in the plurality of convex portions and having a perimeter of not more than seven times the average pitch of the concavities and convexities is not more than 10% of a total of perimeters of the plurality of convex portions.