发明名称 |
AUTOMATIC FOCUS LOCATING SYSTEM |
摘要 |
PURPOSE:To easily detect the conditions in and out of focus of a photographic lens by making use of the phase difference signals between the signals from a plurality of optical detectors and some of those signals having passed through a delay circuit. |
申请公布号 |
JPS5422826(A) |
申请公布日期 |
1979.02.21 |
申请号 |
JP19770087803 |
申请日期 |
1977.07.21 |
申请人 |
CANON KK |
发明人 |
ENDOU KIYONOBU;KUWAYAMA TETSUO;TANAKA NOBUYOSHI |
分类号 |
G03B13/36;G02B7/34;G03B3/00 |
主分类号 |
G03B13/36 |
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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