Multiple data surface optical data storage system
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United States of America Patent
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Apr 13, 1993
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N/A
app pub date -
Jun 4, 1991
filing date -
Jun 4, 1991
priority date (Note) -
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Abstract
An optical data storage system comprises a multiple data surface medium and optical head. The medium comprises a plurality of substrates separated by a light transmissive medium. Data surfaces are located on the substrate surfaces which lie adjacent a light transmissive medium. The data surfaces are substantially light transmissive. The optical head includes an aberration compensator to allow the head to focus onto the different data surfaces and a filter to screen out unwanted reflected light.
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