Patent ID: 8416371
Filing Date: 2013-04-09
Classification: G02B,G02F

Abstract:
1. A polarization device comprising: a substrate; and a plurality of metal layers that is provided on one face of the substrate in a stripe shape and includes a first dielectric layer and a second dielectric layer, wherein an optical absorption rate of the second dielectric layer is higher than that of the first dielectric layer, in two side faces opposite to each other of a plurality of side faces of a first metal layer and in a top part of the first metal layer among the plurality of metal layers, the first dielectric layer included in the first metal layer is provided between the second dielectric layer included in the first metal layer and the first metal layer, and a substrate side end portion of the second dielectric layer included in the first metal layer is located between the one face of the substrate and the top part of the first metal layer.