发明名称 |
Optical recording medium and optical recording/reproducing method |
摘要 |
An optical recording medium 10 on which recording/reproducing or reproducing is performed by irradiating a light by means of an objective lens 4 having a numerical aperture equal to or more than 1 wherein an optical recording portion 2 is provided at least at the outer most surface at the irradiation side of the optical recording medium 10 and a relation n>=NA is selected when the refractive index of the recording portion 2 is n and the numerical aperture of the objective lens 4 is NA. Accordingly, it can propose an optical recording medium and an optical recording/reproducing method suitable for a near-field optical recording method which uses an objective lens having a numerical aperture equal to or more than 1.
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申请公布号 |
US2004037205(A1) |
申请公布日期 |
2004.02.26 |
申请号 |
US20030465327 |
申请日期 |
2003.06.19 |
申请人 |
SHINODA MASATAKA;SAITO KIMIHIRO |
发明人 |
SHINODA MASATAKA;SAITO KIMIHIRO |
分类号 |
G11B7/24;G11B7/004;G11B7/135;G11B7/243;G11B7/253;(IPC1-7):G11B11/00 |
主分类号 |
G11B7/24 |
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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