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    Focus condition detecting device
    6.
    发明授权
    Focus condition detecting device 失效
    聚焦条件检测装置

    公开(公告)号：US4942418A

    公开(公告)日：1990-07-17

    申请号：US355449

    申请日：1989-05-22

    申请人： Toshio Norita ,  Tokuji Ishida ,  Masataka Hamada ,  Toshihiko Karasaki ,  Nobuyuki Taniguchi

    发明人： Toshio Norita ,  Tokuji Ishida ,  Masataka Hamada ,  Toshihiko Karasaki ,  Nobuyuki Taniguchi

    IPC分类号： G02B7/34

    CPC分类号： G02B7/34

    摘要： An automatic focusing divice for a camera is disclosed. The automatic focusing device has sensing means for sensing light intensity distributions within narrow and wide areas of a field of view of an objective lens, respectively and can be operated in either operation mode of one-shot AF mode and continuous AF mode. When the one-shot AF mode is designated, said narrow area which is narrower than said wide area is automatically selected for focus condition detection and, when the continuous AF mode is designated, said wide area is automatically selected.

    摘要翻译： 公开了一种用于照相机的自动对焦部分。 自动聚焦装置具有用于分别感测物镜的视场的窄范围和宽范围内的光强分布的感测装置，并且可以以单次AF模式和连续AF模式的任一操作模式操作。 当指定单次AF模式时，自动选择比所述广域窄的所述窄区域进行焦点状态检测，并且当指定了连续AF模式时，自动选择所述广域。

    Focus condition detecting device
    7.
    发明授权
    Focus condition detecting device 失效
    聚焦条件检测装置

    公开(公告)号：US4716434A

    公开(公告)日：1987-12-29

    申请号：US945879

    申请日：1986-12-23

    申请人： Nobuyuki Taniguchi ,  Tokuji Ishida ,  Masataka Hamada ,  Toshihiko Karasaki ,  Toshio Norita

    发明人： Nobuyuki Taniguchi ,  Tokuji Ishida ,  Masataka Hamada ,  Toshihiko Karasaki ,  Toshio Norita

    IPC分类号： G03B13/36 ,  G02B7/34 ,  G03B3/00

    CPC分类号： G02B7/34

    摘要： A focus condition detecting device which generated first and second light intensity distribution signals representing light intensity distributions on first and second arrays arranged to receive lights having passed through different areas of the exit pupil of an objective lens is arranged so as to divide the first light intensity distribution signal into a plurality of blocks. Each of the portions of the first light intensity distribution signal belonging to the respective blocks is shifted relative to the second light intensity distribution signal by sequentially changing an amount of shift, so that correlations therebetween are calculated for finding the amount of shift providing the highest correlation. In accordance with the amount of shift found to provide the highest correlation through the correlation calculation with use of the portion of the first light intensity distribution signal belonging to one of the blocks, the shift range for the succeeding correlation calculation with use of the portion of the first light intensity distribution signal belonging to another one of the blocks is restricted to shorten the period of time required for the succeeding correlation calculation.

    摘要翻译： 一种聚焦条件检测装置，其生成表示第一和第二阵列上的光强度分布的第一和第二光强分布信号，所述第一和第二阵列布置成接收通过物镜的出射光瞳的不同区域的光，以便将第一光强度 分配信号分成多个块。 属于各个块的第一光强分布信号的每个部分相对于第二光强分布信号通过顺序地改变偏移量而偏移，从而计算它们之间的相关性，以找出提供最高相关性的偏移量 。 根据通过使用属于其中一个块的第一光强分布信号的部分的相关计算提供最高相关性的移位量，用于随后的相关计算的偏移范围，使用 限于属于另一个块的第一光强分布信号以缩短后续相关计算所需的时间。

    AF camera having a display for displaying a plurality of modes
    8.
    发明授权
    AF camera having a display for displaying a plurality of modes 失效
    具有用于显示多个模式的显示器的AF相机

    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

    IPC分类号： G02B7/28 ,  G03B13/36

    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。

    Automatic focus detection system
    10.
    发明授权
    Automatic focus detection system 失效
    自动对焦检测系统

    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

    IPC分类号： G02B7/34 ,  G02B7/36

    CPC分类号： G02B7/34 ,  G02B7/36

    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。