OPTICAL RECORDING MEDIUM AND METHOD OF MANUFACTURING SAME

摘要

An optical recording medium according to the present invention consists of a substrate, and information recording patterns (2, 3) formed on the substrate and capable of being discriminated from each other by their different reflectances, characterized in that the information recording pattern (2) is composed of a high reflectance portion (2a) and a low reflectance portion (2b) with at least part of the information recording patterns made up of a diffraction grating or a hologram (3). Since such a plurality of elements of information can be recorded at a high density at once, the present invention enables the manufacturing steps to be simplified, and has an excellent forgery preventing effect.