发明名称 FOCUS POINT ADJUSTING APPARATUS OF AUTOMATIC FOCUS POINT ADJUSTING CAMERA
摘要 An automatic lens focusing mechanism including a displaceable operating member, a focusing mechanism cooperative with the operating member for changing the focus of a lens as the operating member is displaced, and a mechanism comprising a control member displaced by the operating member as the operating member is displaced. An electromagnet is effective to hold an armature when it is energized. When the electromagnet is not energized the armature is mounted for sliding across a face of the electromagnet adjacent and parallel to the electromagnet face. A focus detecting mechanism energizes the electromagnet when the control member is at a position corresponding to a focused condition of the lens for holding the armature and the control member at a position corresponding to the focused condition to thereby hold the lens at the focused condition.
申请公布号 JPS54118829(A) 申请公布日期 1979.09.14
申请号 JP19780025666 申请日期 1978.03.07
申请人 SEIKO KOKI KK 发明人 KITAI KIYOSHI;NAKAGAWA TADASHI;ISHIDA HIROAKI
分类号 G03B13/36;G02B7/30;G03B3/10;G03B17/38 主分类号 G03B13/36
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