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公开(公告)号：US4916472A
公开(公告)日：1990-04-10
申请号：US352364
申请日：1989-05-16
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。
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公开(公告)号：US5408291A
公开(公告)日：1995-04-18
申请号：US983324
申请日：1992-11-30
申请人： Tokuji Ishida , Masataka Hamada , Jun Hasegawa , Kenji Ishibashi , Toshio Norita , Hiroshi Ootsuka
发明人： Tokuji Ishida , Masataka Hamada , Jun Hasegawa , Kenji Ishibashi , Toshio Norita , Hiroshi Ootsuka
CPC分类号： G02B7/285
摘要： An AF camera system for automatically controlling an objective lens for focusing an object includes a focus detector for generating a defocus data DF carrying information of a defocus amount and a defocus direction based on a focus condition of an object to be focused through an objective lens detected in a detection cycle, an infocus detector for detecting an infocus condition based on the defocus data, a lens driver for driving the objective lens based on the defocus amount and defocus direction carried in the defocus data DF when the infocus detection means did not detect the infocus condition; and a control for controlling the focus adjustment based on defocus data and/or the detection of the infocus condition detected by the infocus detection means.
摘要翻译： 用于自动控制用于聚焦物体的物镜的AF相机系统包括焦点检测器，用于基于被检测物镜的待聚焦物体的聚焦条件来产生携带散焦量和散焦方向信息的散焦数据DF 在检测周期中，用于根据散焦数据检测聚焦条件的聚焦检测器，用于当聚焦检测装置未检测到散焦数据DF时基于散焦量和散焦方向驱动物镜的透镜驱动器 聚焦条件; 以及用于基于散焦数据控制焦点调整的控制和/或由焦点检测装置检测到的聚焦状态的检测。
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公开(公告)号：US5319412A
公开(公告)日：1994-06-07
申请号：US22780
申请日：1993-02-23
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5192966A
公开(公告)日：1993-03-09
申请号：US901797
申请日：1992-06-22
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5023646A
公开(公告)日：1991-06-11
申请号：US351176
申请日：1989-05-12
申请人： Tokuji Ishida , Masataka Hamada , Kenji Ishibashi , Nobuyuki Taniguchi , Hiroshi Ootsuka , Toshio Norita , Toshihiko Karasaki
发明人： Tokuji Ishida , Masataka Hamada , Kenji Ishibashi , Nobuyuki Taniguchi , Hiroshi Ootsuka , Toshio Norita , Toshihiko Karasaki
摘要： A camera with an automatic focusing device has an objective lens mounted on a camera. An image formed by the objective lens is divided into a plurality of zones. In each zone, a brightness distribution is obtained so as to detect a rough focusing condition in each zone, thereby producing a plurality of rough focusing condition data. Based on the result of the rough focusing condition data, one zone is selected. Furthermore, a precise focusing condition is detected in the selected zone based on the light contained in the selected zone, so as produce a precise focusing condition data. Based on the precise focusing condition data obtained from the selected zone, the objective lens is driven to an infocus condition.
摘要翻译： 具有自动对焦装置的相机具有安装在相机上的物镜。 由物镜形成的图像被分成多个区域。 在每个区域中，获得亮度分布，以便检测每个区域中的粗略聚焦状态，由此产生多个粗略聚焦条件数据。 根据粗略聚焦条件数据的结果，选择一个区域。 此外，基于所选择的区域中包含的光，在所选择的区域中检测精确的聚焦条件，以产生精确的聚焦条件数据。 基于从所选区域获得的精确聚焦条件数据，物镜被驱动到聚焦条件。
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公开(公告)号：US4998124A
公开(公告)日：1991-03-05
申请号：US276920
申请日：1988-11-28
申请人： Tokuji Ishida , Masataka Hamada , Jun Hasegawa , Kenji Ishibashi , Toshio Norita , Hiroshi Ootsuka
发明人： Tokuji Ishida , Masataka Hamada , Jun Hasegawa , Kenji Ishibashi , Toshio Norita , Hiroshi Ootsuka
IPC分类号： G02B7/28
CPC分类号： G02B7/285
摘要： An AF autofocus camera system for automatically controlling an objective lens for focusing an object including a focus detector for generating defocus data carrying information of a defocus amount and a defocus direction based on a focus condition of an object to be focused through an objective lens detected at a detection cycle, and a focus condition memory for storing defocus data obtained in a present detection cycle, a previous detection cycle, and a cycle before the previous detection cycle. The system further includes first and second infocus detectors for detecting the infocus condition based on the defocus data itself and the average of the defocus data, respectively. First and second lens drive controllers are provided for driving and stopping the objective lens responsive to the first and second infocus detectors, respectively. The system further includes a selector for selecting the second infocus detector and the second lens controller to be operative where none of the defocus data is within an acceptable range or tolerance range so as to be considered as an infocus condition and the defocus direction of the defocus data obtained in the present and previous detection cycles show opposite directions.
摘要翻译： 一种AF自动对焦照相机系统，用于自动控制用于聚焦物体的物镜，所述物镜包括焦点检测器，用于产生携带散焦量和散焦方向信息的散焦数据，所述散焦数据基于通过在 检测周期，以及聚焦条件存储器，用于存储在当前检测周期中获得的散焦数据，先前检测周期和在先前检测周期之前的周期。 该系统还包括分别基于散焦数据本身和散焦数据的平均值来检测聚焦条件的第一和第二焦点检测器。 第一和第二透镜驱动控制器分别用于响应于第一和第二焦点检测器来驱动和停止物镜。 该系统还包括选择器，用于选择第二焦点检测器和第二透镜控制器，以在散焦数据不在可接受的范围或公差范围内的情况下工作，以便被认为是聚焦条件和散焦的散焦方向 在当前和之前的检测周期中获得的数据显示相反的方向。
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公开(公告)号：US4816856A
公开(公告)日：1989-03-28
申请号：US32738
申请日：1987-03-30
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5187515A
公开(公告)日：1993-02-16
申请号：US599278
申请日：1990-10-18
申请人： Kenji Ishibashi , Tokuji Ishida , Masataka Hamada
发明人： Kenji Ishibashi , Tokuji Ishida , Masataka Hamada
IPC分类号： G02B7/36
CPC分类号： G02B7/36
摘要： A camera having automatic focus adjusting apparatus employing a continuous photographing mode comprises a focus detecting apparatus for detecting a focusing condition of a photographic lens to output an amount of defocus, and an apparatus for detecting an amount of movement of an object by detecting the amount of defocus of the same object at different times. Since the amount of movement of the object is detected, whether the object is moving or not can be easily determined.
摘要翻译： 具有采用连续拍摄模式的自动对焦调节装置的摄像机包括：焦点检测装置，用于检测摄影镜头的聚焦状态以输出一定量的散焦;以及一种用于通过检测物体的量来检测物体的移动量的装置 不同时间同一物体的散焦。 由于检测到物体的移动量，因此可以容易地确定物体是否移动。
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公开(公告)号：US5053800A
公开(公告)日：1991-10-01
申请号：US462478
申请日：1990-01-09
申请人： Tokuji Ishida , Masataka Hamada , Toshio Norita , Masayuki Ueyama , Katsumi Kozakai , Hiroshi Ootsuka , Hideo Kajita , Kenji Ishibashi
发明人： Tokuji Ishida , Masataka Hamada , Toshio Norita , Masayuki Ueyama , Katsumi Kozakai , Hiroshi Ootsuka , Hideo Kajita , Kenji Ishibashi
CPC分类号： G02B7/36
摘要： An improved focus detecting apparatus comprises a photographic lens, a focus detecting device for detecting the focusing condition of the photographic lens and a lens driving means for driving the photographic lens based on the focusing condition detected, and the photographic lens is driven, in advance, to a focusing position where a frequently used magnification rate determined in accordance with the focal length of said photographic lens is attained, and then driven to an in-focus position.
摘要翻译： 一种改进的焦点检测装置，包括摄影镜头，用于检测摄影镜头的聚焦状态的焦点检测装置和用于基于检测到的聚焦条件来驱动摄影镜头的镜头驱动装置，并且摄影镜片预先被驱动， 到聚焦位置，其中获得根据所述摄影镜头的焦距确定的频繁使用的放大率，然后被驱动到对焦位置。
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公开(公告)号：US4969006A
公开(公告)日：1990-11-06
申请号：US386029
申请日：1989-07-25
CPC分类号： G02B7/34
摘要： There is provided an automatic focus control device for use in a camera system comprising a focus detection control means for continuously driving a motor from the time when it is judged that a focus condition of a photograph lens can not be detected until it is judged that the focus condition can be detected, and a rotation number control means for controlling the rotation speed of said motor driven by said focus detection control means in accordance with a constant data designating a relationship between the rotation number of said motor and a unit of a defocus value. Accordingly, the moving speed of said photograph lens is controlled in accordance with defocus variation during the movement of said photograph lens, resulting in that the infocus position of the object can be detected by a low contrast search without overrunning the infocus position, even though the object is positioned far from an available range of the focus detection.
摘要翻译： 提供了一种用于照相机系统中的自动对焦控制装置，包括焦点检测控制装置，用于从判断为无法检测到照相镜的焦点状态的时刻连续地驱动电动机，直到判断为 可以检测焦点条件;以及旋转数控制装置，用于根据指定所述电动机的转数与散焦值单位之间的关系的恒定数据来控制由所述焦点检测控制装置驱动的所述电动机的转速 。 因此，根据在所述照相镜的移动期间的散焦变化来控制所述照相镜的移动速度，导致可以通过低对比度搜索来检测物体的聚焦位置而不超越聚焦位置，即使 物体远离焦点检测的可用范围。
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