A wire grid polarizer (100) for polarizing an incident light beam (130), comprising a substrate (505) having a first surface (410) and a second surface (510); and a first array of parallel, elongated wires disposed on the first surface (410). Each of the wires are spaced apart at a grid period less than...http://www.google.se/patents/US20040120041?utm_source=gb-gplus-sharePatent US20040120041 - Double sided wire grid polarizer
