DURABLE, INORGANIC, ABSORPTIVE, ULTRA-VIOLET, GRID POLARIZER

摘要

An inorganic, dielectric grid polarizer device (10, 10b, 10c, I0d, 10e, 10f) includes a stack (14, 14b, 14c, 14d, 14e, 14f of film layers ( 18a, 18b) disposed over a substrate (22). Each film layer is formed of a material that is both inorganic and dielectric. Adjacent film layers each have different refractive indices. At least one of the film layers is discontinuous to form a form-birefringent layer (26) with an array of parallel ribs (30) having a period less than 400 nm. Another layer, different than the form-birefringent layer, is formed of an optically absorptive material for the ultra-violet spectrum.