| 发明名称 |
Optical memory element |
| 摘要 |
An optical memory element comprising a substrate with grooves functioning as grooves for, for example, controlling the position of a laser beam, wherein said substrate is composed of a glass containing SiO2 in the range of 51 to 71% by weight, Na2O in the range of 10 to 18% by weight, K2O in the range of 0 to 8% by weight, Al2O3 in the range of 12 to 22% by weight, and B2O3 in the range of 0 to 9% by weight.
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| 申请公布号 |
US4818648(A) |
申请公布日期 |
1989.04.04 |
| 申请号 |
US19860934718 |
申请日期 |
1986.11.25 |
| 申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
OHTA, KENJI;TAKAHASHI, AKIRA;INUI, TETSUYA;KATAYAMA, HIROYUKI;HIROKANE, JUNJI;MURAKAMI, YOSHITERU |
| 分类号 |
G11B11/10;C03C3/076;C03C3/083;C03C3/091;C03C4/00;C03C15/00;G11B7/24;G11B7/253;G11B7/26;G11B11/105;(IPC1-7):G03C5/16;G01D9/00;G11B3/70 |
主分类号 |
G11B11/10 |
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