Patent ID: 9696464
Date: 2017-07-04
CPC Classifications: B29C,B29D,B29L,G02B

Claim:
1. A method for manufacturing an optical article having an uneven surface structure comprising: placing an active energy ray curable resin composition between a mold having an uneven surface structure, wherein an average inclination angle obtained is from 20 to 80 degrees, and a diffusion factor obtained is 5 to 80%, or a replica mold having the uneven structure of the mold transferred on a surface of a replica mold substrate, and a substrate for an optical article; forming, on a surface of the substrate for an optical article, an uneven resin layer transferred with the uneven structure of the mold or the replica mold by irradiating the active energy ray curable resin composition with active energy ray to cure the active energy ray curable resin composition; and releasing the optical article having the uneven resin layer and the substrate for an optical article from the mold or the replica mold; wherein: the average inclination angle is defined by: wherein the average inclination angle θa is obtained similarly for 20 spots in total, an average value of which is obtained, and wherein the diffusion factor as obtained by the method described below is 5 to 80%: in a height direction of an uneven structure, laser light is applied to an optical article; intensity I