OPTICAL DATA RECORDING MEDIUM PROVIDED WITH AT LEAST ONE PHOTOSENSITIVE LAYER AND ONE DEFORMABLE LAYER

摘要

The inventive optical data recording medium comprises first and second substrates (2, 8) and at least one first photosensitive layer (5) which is arranged therebetween and preferably made of inorganic material. The first photosensitive layer (5) is provided with a front surface (5a) for receiving, optical radiation (6) by means of the second substrate during writing and reading operations. A first light transitive (6) deformable layer (7) is disposed between the first photosensitive layer (5) and the second substrate (8). The first substrate (2) is provided with a front surface (2b) structured in such a way that it is possible to form a preferably spiral-shaped groove which makes it possible to carry out precise data writing and/or reading by means of an automatic focusing control and follow-up system.