A polarization optical device is disclosed that includes: an inorganic dielectric substrate transparent with respect to incident light having a flat surface; and an array of strips of conductive elements embedded from the flat surface of the inorganic dielectric substrate to a uniform depth, with an...http://www.google.ca/patents/US20040174596?utm_source=gb-gplus-sharePatent US20040174596 - Polarization optical device and manufacturing method therefor
