Patent ID: 8205992

Claim:
A polarization element comprising: a substrate; a plurality of convex line sections disposed on one surface of the substrate so as to form substantial stripes in a plan view; and a multilayer thin line provided to each of the convex line sections and extending along an extending direction of the convex line sections, wherein the multilayer thin line has a lower layer thin line disposed on the convex line section, and an upper layer thin line stacked on the lower layer thin line, the lower layer thin line and the upper layer thin line each have a first thin line disposed on one side surface out of both side surfaces in a direction along a shorter dimension of the convex line section, and a second thin line disposed on the other side surface, materials of the first thin line belonging to the lower layer thin line and the first thin line belonging to the upper layer thin line are different from each other, and materials of the second thin line belonging to the lower layer thin line and the second thin line belonging to the upper layer thin line are different from each other.