| 发明名称 |
OPTICAL DISK, AND METHOD AND APPARATUS FOR READING DATA FROM OPTICAL DISK |
| 摘要 |
An optical disk includes a transparent substrate having a thickness in the range of 0.2 to 0.4 mm. The transparent substrate transmits a beam of light in the wavelength range of 400 to 420 nm. An object lens having a numerical aperture of 0.60 to 0.75 is provided to converge a beam of light.
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| 申请公布号 |
WO0116947(A1) |
申请公布日期 |
2001.03.08 |
| 申请号 |
WO2000JP05932 |
申请日期 |
2000.08.31 |
| 申请人 |
KABUSHIKI KAISHA TOSHIBA;SUZUKI, KATSUMI;YOSHIZAWA, TAKASHI |
发明人 |
SUZUKI, KATSUMI;YOSHIZAWA, TAKASHI |
| 分类号 |
G11B7/00;G11B7/005;G11B7/125;G11B7/24;G11B7/243;G11B7/253;G11B7/2534;G11B7/254;G11B7/257;G11B7/258;G11B7/2585;G11B7/26;(IPC1-7):G11B7/004;G11B7/135 |
主分类号 |
G11B7/00 |
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