Patent ID: 9272308
Filing Date: 2016-03-01
CPC Classification: B05D,B42D,G02B,Y10T

Claim Text:
1. A method of manufacturing an optical device, comprising: forming a relief structure formation layer including first and second regions adjacent to each other, the second region being provided with recesses or protrusions and having a ratio of surface area to apparent area greater than that of the first region; vapor-depositing a first material having a refractive index different from that of a material of the relief structure formation layer entirely on the first and second regions to form a reflective material layer, the reflective material layer having a surface profile corresponding to surface profiles of the first and second regions, or the reflective material layer having a surface profile corresponding to the surface profile of the first region at a portion corresponding to the first region and being partially opened correspondingly to an arrangement of the recesses or protrusions at a portion corresponding to the second region; vapor-depositing a second material different from the first material on the reflective material layer to form a mask layer, the mask layer having a surface profile corresponding to the surface profiles of the first and second regions, or the mask layer having a surface profile corresponding to the surface profile of the first region at a portion corresponding to the first region and being partially opened correspondingly to the arrangement of the recesses or protrusions at a portion corresponding to the second region; and after forming the mask layer, exposing the mask layer to a reactive gas or liquid capable of causing a reaction with the first material to cause the reaction at least at a position of the second region, thereby obtaining a first layer made of the first material and a second layer made of the second material.