Optisches Informationsaufzeichnungsmedium
An optical information recording medium of the type wherein recorded data can be reproduced by scanning them with a laser beam which comprises an optically readable region and an information recordable region where optically readable pits can be formed by irradiation with a writing laser beam, where...
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Zusammenfassung: | An optical information recording medium of the type wherein recorded data can be reproduced by scanning them with a laser beam which comprises an optically readable region and an information recordable region where optically readable pits can be formed by irradiation with a writing laser beam, wherein the medium comprises a light-transmitting substrate (1) having a deformable surface and a light-reflective layer (3) overlaying the deformable surface (1) and in that the information recordable region additionally comprises a light-absorptive layer (2) between the deformable surface (1) and the light-reflective layer (3) for absorbing the writing laser beam, whereby energy is generated so as to form optically readable pits on the deformable surface, and when the deformable surface (1) is irradiated by laser beam, the light-absorptive layer (2) is able to change the optical character, and the optically readable region comprises a light-transmitting substrate (1) and a light-reflective layer (3) overlaying the light-transmitting substrate (1) and in that the optically readable region (6) additionally comprises a light-absorptive layer (2) between the light-transmitting substrate and the light-reflective layer. |
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