Reflective phase difference structure

Abstract

The present invention provides a reflective phase difference structure with broadband and uniform characteristics. [Solution] The reflective phase difference structure 200 has a laminated structure of a metal reflective layer 210, a dielectric spacer layer 220, and an anisotropic structure layer 230. The anisotropic structure layer 230 includes a plurality of metal components 232 made of an aluminum-based metal. The dielectric protective layer 240 is formed on top of the anisotropic structure layer 230. On the surface of the dielectric protective layer 240, protrusions 242 are formed at locations corresponding to the metal components 232.

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