发明名称 Automatic focusing apparatus as well as lens apparatus and image pickup system including the automatic focusing apparatus
摘要 An automatic focusing apparatus includes: a first focus detector that detects a first focus evaluation value based on a phase difference; a second focus detector that detects a second focus evaluation value using a signal from an image pickup element; a focusing mechanism; a focus controller that controls the focusing mechanism based on the first focus evaluation value obtained by the first focus detector and the second focus evaluation value obtained by the second focus detector; and a speed setting unit that sets, in a process obtaining an in-focus state by using the focus controller, a driving speed for the focus controller to drive the focusing mechanism based on a first data detected by the first focus detector and the second focus evaluation value.
申请公布号 EP2474850(A1) 申请公布日期 2012.07.11
申请号 EP20120000049 申请日期 2012.01.04
申请人 CANON KABUSHIKI KAISHA 发明人 ISOBE, SHINGO
分类号 G03B3/10;G02B7/08;G02B7/28;G02B27/28;G03B13/36;H04N5/232;H04N5/369 主分类号 G03B3/10
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