Patent ID: 7156530

Claim:
An antireflection film having a hard coat layer prepared on one side of a transparent substrate directly or through other layers, and further an antireflection layer laminated on a surface of the hard coat layer, wherein the hard coat layer is formed of an ultraviolet curable resin and has a n d 20 (refractive index at 20° C.) which is 1.49 or more, wherein the antireflection layer is formed by a dry cured film obtained from a solution comprising a siloxane oligomer (A) obtained by condensation polymerization after partial hydrolysis of a hydrolyzable alkoxy silane that contains a tetra alkoxy silane represented by a general formula (1): Si(OR) 4 (where R represents methyl group or ethyl group) as a principal component and a compound (B) having a fluoro alkyl structure and a polysiloxane structure obtained by polymerization of a compound having a perfluoro alkyl structure and a hydrolyzable non-fluorinated alkoxy silane.