Patent ID: 9164307
Filing Date: 2015-10-20
Classification: G02B,G02F

Abstract:
1. A polarizer comprising: a substrate; a first grating provided on the substrate and that is stripe-shaped in planar view; and a second grating that is provided over the first grating and that is stripe-shaped in planar view, and that extends in the extension direction of the first grating, wherein the first grating is made of a light reflecting material, the second grating is made of a light absorbing material, the second grating contains at least one of chromium nitride, tungsten nitride, and tantalum nitride, the first grating and the second grating form a portion of a laminate, and a layer disposed between the first grating and the second grating, wherein the layer is configured and arranged to prevent interdiffusion between a constituent element of the first grating and a constituent element of the second grating.