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    • 31. 发明授权
    • Autofocus camera including automatically controlled focus adjustment
    • 自动对焦相机包括自动对焦调节
    • US4998124A
    • 1991-03-05
    • US276920
    • 1988-11-28
    • Tokuji IshidaMasataka HamadaJun HasegawaKenji IshibashiToshio NoritaHiroshi Ootsuka
    • Tokuji IshidaMasataka HamadaJun HasegawaKenji IshibashiToshio NoritaHiroshi Ootsuka
    • G02B7/28
    • G02B7/285
    • 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.
    • 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。
    • 37. 发明授权
    • Camera having a power zoom function
    • 相机具有电动变焦功能
    • US6167201A
    • 2000-12-26
    • US903309
    • 1997-07-30
    • Yoshihiro HaraKenji IshibashiKimiharu AkahoshiNorihiko Akamatsu
    • Yoshihiro HaraKenji IshibashiKimiharu AkahoshiNorihiko Akamatsu
    • G02B7/10G03B17/00
    • G02B7/102
    • A camera is provided with a varifocal lens including a zoom lens system driven by a motor and by a zoom lens drive control section and a focusing lens system driven by a motor and by a focusing lens drive control section for performing focusing before the zoom lens system is driven or while the zoom lens system is being driven. The camera is also provided with a lens switch sensor for determining whether an operation member for starting an exposure operation has been operated and a body control section and a lens control section for halting the driving of the zoom lens system when it is determined that the operation member has been operated by the sensor to re-start the driving of the focusing lens system.
    • 相机设置有变焦透镜,该变焦透镜包括由电动机驱动的变焦透镜系统和变焦透镜驱动控制部以及由电动机驱动的聚焦透镜系统以及用于在变焦透镜系统之前进行聚焦的聚焦透镜驱动控制部 被驱动或当变焦镜头系统被驱动时。 相机还设置有用于确定用于开始曝光操作的操作构件是否已被操作的镜头开关传感器,以及当确定操作的情况下用于停止变焦镜头系统的驱动的身体控制部分和镜头控制部分 传感器已经操作构件以重新开始聚焦透镜系统的驱动。