OPTICAL INFORMATION RECORDING MEDIUM AND PRODUCTION METHOD THEREFOR

摘要

An optical information recording medium has: a substrate; one, two or more information signal layers which is formed on the substrate; and a protective layer which is formed on the one, two or more information signal layers. The surface of the protective layer is a reading surface on which light for recording or playing back an information signal in the information signal layer is radiated, and, in the reading surface, a plurality of subwavelength structures is formed.