ANTIREFLECTION FILM, POLARIZER, IMAGE DISPLAY DEVICE AND METHOD FOR MANUFACTURING ANTIREFLECTION FILM

摘要

PROBLEM TO BE SOLVED: To provide: an antireflection film simply manufactured, low in reflectance and having a moth-eye structure; a polarizer and image display device having the antireflection film; and a method for manufacturing the antireflection film.SOLUTION: An antireflection film 10 includes a light transmissive base material 1 and an antireflection layer 2 having an uneven structure on the surface of the side opposite to the light transmissive base material. The uneven structure of the antireflection layer is formed by a sea-island shaped phase separation structure consisting of a sea part 3 made of a cured product of an ionizing radiation curable monomer (A) having two or more polymerizable groups in a molecular and island parts 4 made of a cured product of an ionizing radiation curable monomer (B) different from the ionizing radiation curable monomer (A) and projected from the sea part to form projections. A surface ratio of the sea part to the island parts (an area of the sea part/an area of the island parts) on the outermost surface of the antireflection layer is larger than 1.0; the size of the island part forming a projection and the period of projection interval are 380 nm or less; and the haze of the surface is less than 1.0%.