发明名称 |
Optical information recording medium |
摘要 |
<p>The optical information recording medium of the present invention includes an information layer (8) provided on a substrate (5). The information layer (8) includes: a recording layer (2) with respect to which information can be recorded and reproduced through irradiation with a laser beam (7) having a predetermined wavelength; a first protective layer (1) that is located, with respect to the recording layer (2), on the side to which the laser beam is incident; and a second protective layer (3) that is located, with respect to the recording layer (2), on the opposite side to the side to which the laser beam is incident. The refractive index n1 of the first protective layer (1) and the refractive index n2 of the second protective layer (3) at the predetermined wavelength of the laser beam that is used for recording and reproduction satisfy a relationship of n2 < n1. A favourable jitter value and high transmittance are thereby simultaneously obtained.
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申请公布号 |
EP1475794(A3) |
申请公布日期 |
2007.07.25 |
申请号 |
EP20040252634 |
申请日期 |
2004.05.06 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
UNO, MAYUMI;YAMADA, NOBORU;KOJIMA, RIE |
分类号 |
G11B7/00;G11B7/24038;G11B7/243;G11B7/2433;G11B7/253;G11B7/2531;G11B7/2533;G11B7/2534;G11B7/257;G11B7/2578;G11B7/258;G11B7/2585;G11B7/259;G11B7/2595 |
主分类号 |
G11B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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