| 发明名称 |
Optical disc |
| 摘要 |
An optical disc has a support base and at least one information-retrieval layer formed over the support base. The information-retrieval layer is transparent and thinner than the support base. The information-retrieval layer exhibits variation in birefringence within ±20 nmpp (nano meter peak to peak) under double-pass measurements during one rotation of the optical disc.
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| 申请公布号 |
US2003148060(A1) |
申请公布日期 |
2003.08.07 |
| 申请号 |
US20020243827 |
申请日期 |
2002.09.16 |
| 申请人 |
NISHIZAWA AKIRA;KONDO TETSUYA;KOJIMA TAKEO |
发明人 |
NISHIZAWA AKIRA;KONDO TETSUYA;KOJIMA TAKEO |
| 分类号 |
B32B3/02;G11B7/00;G11B7/24;G11B7/24038;G11B7/24056;G11B7/243;G11B7/253;G11B7/254;G11B7/26;(IPC1-7):G11B7/24 |
主分类号 |
B32B3/02 |
| 代理机构 |
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