发明名称 |
Optical recording medium, optical pickup and optical recording and/or reproducing apparatus |
摘要 |
An optical recording medium to which light for recording and/or reproducing is emitted, comprising one or a plurality of inorganic deelectric layers provided at an incident side to which light from an optical system is converged, and an amplitude transmittance, which is a ratio of the light reached to a recording layer in the optical recording medium to said converged light passed through outer circumference area of said optical system, being equal or greater than 30%.
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申请公布号 |
US2001053117(A1) |
申请公布日期 |
2001.12.20 |
申请号 |
US20010790017 |
申请日期 |
2001.02.21 |
申请人 |
ICHIMURA ISAO;KISHIMA KOICHIRO;YAMAMOTO KENJI;KURODA YUJI |
发明人 |
ICHIMURA ISAO;KISHIMA KOICHIRO;YAMAMOTO KENJI;KURODA YUJI |
分类号 |
G11B7/12;G11B7/135;G11B7/24;G11B11/00;(IPC1-7):G11B7/135 |
主分类号 |
G11B7/12 |
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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