| 发明名称 |
OPTICAL RECORDER OR REPRODUCER |
| 摘要 |
PURPOSE:To perform focus controlling, etc. highly accurately and positively by detecting the spacing between a recording medium and a condensing lens form the state of reflecting light with a photoelectric transducer irrespective of a turning mirror. |
| 申请公布号 |
JPS53148412(A) |
申请公布日期 |
1978.12.25 |
| 申请号 |
JP19770063092 |
申请日期 |
1977.05.30 |
| 申请人 |
MITSUBISHI ELECTRIC CORP;TEAC CORP |
发明人 |
OKADA KAZUO;NAGAI TADAO |
| 分类号 |
G03B13/36;G02B7/28;G11B7/08;G11B7/09 |
主分类号 |
G03B13/36 |
| 代理机构 |
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代理人 |
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| 地址 |
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