Optical disk and optical disk apparatus

Details Optical disk and optical disk apparatus Optical disk and optical disk apparatus

2004-03-18

2008-08-05

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S288000, C369S286000, C428S064400

Reexamination Certificate

active

07408869

ABSTRACT:
In an optical disk of the invention composed of two substrates bonded to each other, the level of double refraction is set to 60 nm or less in a read-only disk, to 60 nm or less in a write-once type disk, and to 40 nm or less in a rewritable type disk, respectively.

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