Multiple data surface optical data storage system

Dynamic information storage or retrieval – Storage medium structure – Optical track structure

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369 94, 3692753, 3692754, 369280, 430945, G11B 724

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active

053814010

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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