Optical recording medium having a plurality of recording layers

Details Optical recording medium having a plurality of recording layers Optical recording medium having a plurality of recording layers

2006-08-29

2010-02-23

Dinh, Tan X (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C430S270130

Reexamination Certificate

active

07668070

ABSTRACT:
A phase-change disk has first and second disk sections each including a recording layer and a reflective layer. The first disk section includes a transmission-factor control film including first through third dielectric layers having refractive indexes of n1, n2 and n3, where n1>n2<n3, for improving the transmission factor of the first disk section, which increases the optical intensity of the reflected light from the second disk section.

REFERENCES:
patent: 2004/0202097 (2004-10-01), Oyake et al.
patent: 2004/0252622 (2004-12-01), Kariyada
patent: 2005/0180303 (2005-08-01), Shingai et al.
patent: 2002-025115 (2002-01-01), None
patent: 2003-317314 (2003-11-01), None
patent: 2004-310992 (2004-11-01), None
New Handbook of Optical Technology, Sep. 20, 2002, p. 525-527, Asakura Publishing Co., Ltd.

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