Optical storage system having expanded capacity
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United States of America Patent
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Oct 25, 1988
Grant Date -
N/A
app pub date -
Feb 27, 1985
filing date -
Feb 27, 1985
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for optical storage which utilizes a photopolymerizable liquid crystalline material having cholesteric optical properties. By selectively adjusting the reflectance or transmittance properties of the recording medium such that specific wavelength bands of light are reflected or transmitted, and then substantially permanently fixing the reflectance or transmittance characteristics of the film by photopolymerization, multiple wavelength-dependent information can be stored in each dot. Accordingly, the capacity of the recording medium is substantially expanded when compared to conventional optical storage media.
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