RECORDING MASTER, AND OPTICALLY-READABLE DATA CARRIER DERIVED THEREFROM

摘要

A method of manufacturing a recording master, whereby at least a layer (6) of photosensitive material is provided on a substrate (2), is subsequently irradiated at selected locations with a light beam, and is then developed so as to endow it with localised depressions at the irradiated locations, a film (4) of dielectric material being disposed between the substrate (2) and the photosensitive material (6), whereby irradiation induces an optical standing wave of average intensity Ya in at least the photosensitive layer (6), the phase of which wave is thus embodied by choice of the thickness of the dielectric film (4) that its intensity Yi at the interface (14) between the layer (6) and the film (4) exceeds Ya.