| 发明名称 |
OPTICAL REPRODUCING SYSTEM |
| 摘要 |
PURPOSE:To accurately accomplish the signal reproduction by detecting the phase variations of the lights, which are reproduced from a laser beam, with the use of an optical datector which is divided into four parts. |
| 申请公布号 |
JPS544104(A) |
申请公布日期 |
1979.01.12 |
| 申请号 |
JP19770068416 |
申请日期 |
1977.06.11 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
YAMAMOTO MANABU;KISHINO TAKEO;YAMAZAKI TAKESHI |
| 分类号 |
G02B27/40;G11B7/005;G11B7/09;G11B7/13 |
主分类号 |
G02B27/40 |
| 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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