发明名称 |
Multilayer optical disk |
摘要 |
A multilayer optical disk having an information storage layer which can as well as be reproduced by a general purpose reproducing apparatus, for example, a compact disk player, and from which information can be read from other information storage layers by using an exclusive reproducing apparatus. The multilayer disk has a first substrate on which is formed a first information storage layer which is relatively highly reflective with respect to a light beam having a wavelength of 770-830 nm; and a second substrate on which is formed a second information layer which is relatively transparent with respect to a light beam having a first substrate on which is formed a wavelength of 770 mn to 830 nm but which is sufficiently reflective with respect to a light beam having a wavelength of 615-655 nm.
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申请公布号 |
US5989670(A) |
申请公布日期 |
1999.11.23 |
申请号 |
US19980086276 |
申请日期 |
1998.05.28 |
申请人 |
SONY CORPORATION |
发明人 |
KANEKO, MASAHIKO;UMEZU, NOBUHIKO;ARATANI, KATSUHISA;NAKAOKI, ARIYOSHI |
分类号 |
G11B7/125;G11B7/005;G11B7/085;G11B7/24;G11B7/244;G11B7/257;G11B7/258;(IPC1-7):B32B3/00 |
主分类号 |
G11B7/125 |
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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