Optical recording medium having a relationship between...

Details Optical recording medium having a relationship between... Optical recording medium having a relationship between...

2002-07-18

2009-06-16

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

Reexamination Certificate

active

07548505

ABSTRACT:
An optical recording/reproducing medium having grooves formed along recording tracks and used for recording/reproducing when irradiated with light L with a specified wavelength λ, wherein the track pitch p of a groove is at least 200 nm and up to 350 nm, and a ratio wg′/p between the width wgof a groove and a track pitch p is at least 0.24 and up to 0.67.

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