Pre-formatted moth-eye type optical data storage member and method
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United States of America Patent
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-
Sep 12, 1989
Grant Date -
N/A
app pub date -
Feb 26, 1988
filing date -
Feb 26, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pre-formatted optical data storage member is described in which format zones are generated by the provision in the surface of the optical medium of a 'moth-eye' structure, i.e. regular surface pattern in the form of an arrangement of grooves or protuberances. The pitch and depth of the pattern is such that when irradiated with illumination of predetermined optical characteristics, the format zones display a reflectivity substantially lower than that of the remainder of the optical storage member. Methods of producing optical data storage members with such pre-formatting are also described.
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