Storage medium having a layer of micro-optical lenses each lens generating an evanescent field
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United States of America Patent
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Jun 8, 1999
Issued Date -
N/A
app pub date -
Nov 18, 1997
filing date -
Oct 8, 1996
priority date (Note) -
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Abstract
A medium suitable for the optical storage and retrieval of information comprising a substrate, an active layer for retention of the data, and an overlying optical layer, or layers for double-sided. The optical layer serves to produce an evanescent field in or adjacent to the active layer in response to an incident beam of radiation. The evanescent field is frustrated or attenuated by the data in the active layer and produces a signal.
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