Polarizing element

摘要

Provided is a polarizing element having excellent optical properties and high light resistance to intense light. This polarizing element is provided with a transparent substrate, an absorbing layer disposed on the transparent substrate and constituting grid-shaped convexities arrayed at a pitch smaller than the wavelengths in the optical bandwidth used, a dielectric layer formed on the absorbing layer, and a reflective layer formed on the dielectric layer. Because the absorbing layer, which interferes with and absorbs light, is in contact with the transparent substrate, heat dissipation can be improved and heat resistance of the polarizing plate can be improved.

主权项

1. A polarizing element comprising:
a transparent substrate; an absorbing layer constituting, on the transparent substrate, grid-shaped convexities arrayed at a pitch smaller than a wavelengths in a used optical bandwidth; a dielectric layer formed on the absorbing layer constituting the grid-shaped convexities; and a reflective layer formed on the dielectric layer constituting the grid-shaped convexities, wherein each convexity is formed by the absorbing layer, the dielectric layer and the reflective layer.