发明名称 AUTOMATIC FOCUSING DEVICE
摘要 PURPOSE:To accurately decide the stillness or the movement of an object even when the driving direction of a photographing lens is inverted and to improve tracking performance with respect to a moving object. CONSTITUTION:An automatic focusing device is provided with a stillness and movement deciding means 102 for deciding the stillness or the movement of the object based on a defocusing amount detected by a focus detecting means 101 after a driving amount equivalent to a backlash amount in a lens driving mechanism 104 is detected by a driving amount detecting means 106 when the driving direction of the photographing lens 100 is inverted in a driving means 105, and the stillness or the movement of the object is accurately decided when the driving direction of the photographing lens 100 is inverted.
申请公布号 JPH0560968(A) 申请公布日期 1993.03.12
申请号 JP19910250558 申请日期 1991.09.03
申请人 NIKON CORP 发明人 OGASAWARA AKIRA
分类号 G02B7/28;G02B7/04;G02B7/08;G03B13/36 主分类号 G02B7/28
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