Optical data carrier e.g. compact disk, for digital storage of audio and visual information, has materials e.g. strass stones, applied on data carrier for partial change in thickness i.e. relief of data carrier
摘要
<p>The data carrier has materials (2) e.g. strass stones, applied on the data carrier for partial change in the thickness i.e. relief (1) of the data carrier, where the change in the relief of the data carrier is in the range of 0 to 1.2 mm. The materials are applied at a recess (3) of about 0.1-1.1 mm in the data carrier. A circular aperture (4) is provided in the center of the data carrier.</p>
