| 发明名称 |
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| 摘要 |
The optical data storage system comprises an optical medium comprising two spaced-apart substrates having the same material thickness, each substrate having a data layer. At least one of the substrates has a data layer which is at least partially transmissive. A light source is located near a first one of the substrates. A device directs light from the source to the medium, and includes a device for focusing the light to a discrete number of focusing positions. Each position defines an optical path between the light source and a corresponding one of the data layers. Each of the two optical paths includes a passage through substrate material having a total thickness equal to three substrate thicknesses. |
| 申请公布号 |
JP2721121(B2) |
申请公布日期 |
1998.03.04 |
| 申请号 |
JP19940086431 |
申请日期 |
1994.04.25 |
| 申请人 |
INTAANASHONARU BIJINESU MASHIINZU CORP |
发明人 |
UEIN ISAMI IMAINO;HARU JAAUISU ROOZUN;KAATO ARAN RUBIN;TEIMOSHII KAARU SUTORANDO |
| 分类号 |
G11B7/095;G11B7/005;G11B7/09;G11B7/24 |
主分类号 |
G11B7/095 |
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