公开(公告)号：US4916472A

公开(公告)日：1990-04-10

申请号：US352364

申请日：1989-05-16

申请人： Noriyuki Okisu ,  Tokuji Ishida ,  Masataka Hamada ,  Kenji Ishibashi

发明人： Noriyuki Okisu ,  Tokuji Ishida ,  Masataka Hamada ,  Kenji Ishibashi

IPC分类号： G03B13/36 ,  G02B7/28 ,  G02B7/34

CPC分类号： G02B7/282 ,  G02B7/34

摘要： An auto-focus camera includes focus detection means for detecting the focussing state of a photographic lens, reliability discriminating means for discriminating whether the result of the focus detection means is reliable, first drive control means for driving the photographic lens to a position determined from the result of the focus detection means when the reliability discriminating means discriminates that the result is reliable, second drive control means for driving the photographic lens in a predetermined direction when the reliability discriminating means discriminates that the result is unreliable, and means for executing operations necessary for focussing during the predetermined direction driving, such as judgement as to whether a reverse driving is necessary, calculation of the driving amount of the photographic lens to an in-focus position.

摘要翻译： 自动对焦照相机包括用于检测摄影镜头的聚焦状态的焦点检测装置，用于鉴别焦点检测装置的结果是否可靠的可靠性鉴别装置，用于将摄影镜头驱动到从该位置确定的位置的第一驱动控制装置 当可靠性鉴别装置识别结果可靠时，焦点检测装置的结果，当可靠性鉴别装置鉴别出结果不可靠时，用于在预定方向上驱动摄影透镜的第二驱动控制装置，以及用于执行必要的操作的装置 在预定方向驱动期间进行聚焦，例如判断是否需要反向驱动，将摄影透镜的驱动量计算到对焦位置。