Secured support for optical data comprises data support zone readable by means of reading light beam, and at least one photosensitive part endowed with photosensitive material containing diaryl ethene compound

摘要

Secured support of optical playback data (1) comprises data support zone (4) readable with reading light beam and at least one photosensitive part (5) exposed to the reading light beam and endowed with photosensitive material having at least one optical property modifiable with reading light beam and containing active matter consisting of diaryl ethene-type compound.