公开(公告)号：US5146071A

公开(公告)日：1992-09-08

申请号：US691064

申请日：1991-04-23

申请人： Mitsumasa Ookubo ,  Tsuyoshi Yaji ,  Yasushi Toizumi ,  Toyoji Sasaki ,  Shigeru Kato ,  Tetsuo Miyasaka ,  Yasushi Odanaka ,  Masafumi Yamashaki ,  Shinichi Kodama

发明人： Mitsumasa Ookubo ,  Tsuyoshi Yaji ,  Yasushi Toizumi ,  Toyoji Sasaki ,  Shigeru Kato ,  Tetsuo Miyasaka ,  Yasushi Odanaka ,  Masafumi Yamashaki ,  Shinichi Kodama

IPC分类号： G02B3/00 ,  G02B7/08

CPC分类号： G02B7/285 ,  G02B7/102

摘要： A plurality of lens groups are moveable in the direction of an optical axis. A plurality of motors are provided for the lens groups, respectively. A driving circuit drives the motors. A switching section sequentially selects the motors and connects the selected motors to the driving circuit. A lens position-detecting section detects the positions of the lens groups. A driving control section sequentially drives the lens groups in accordance with intermediate target position data, respectively, via the switching section and the driving section, and determines whether the lens groups have reached their respective intermediate target positions, on the basis of the detection performed by the lens position-detecting section. When the driving control section determines that the lens groups have reached their respective intermediate target positions, it demands next intermediate target positions, which are slightly away from the initially-determined intermediate target positions. On the basis of the next intermediate target positions, the lens groups are driven again. With this operation repeated, the driving control section controls the driving of the lens groups until these lens groups reach their respective final target positions.

摘要翻译： 多个透镜组可在光轴的方向上移动。 分别为透镜组提供多个电动机。 驱动电路驱动电机。 切换部顺序地选择电动机并将所选择的电动机连接到驱动电路。 透镜位置检测部检测透镜组的位置。 驱动控制部分根据中间目标位置数据依次按照切换部分和驱动部分驱动透镜组，并根据检测结果确定透镜组是否已达到各自的中间目标位置 透镜位置检测部。 当驱动控制部分确定透镜组已经达到其各自的中间目标位置时，它要求稍微远离初始确定的中间目标位置的下一个中间目标位置。 在下一个中间目标位置的基础上，再次驱动镜头组。 通过重复该操作，驱动控制部分控制透镜组的驱动，直到这些透镜组达到它们各自的最终目标位置。

公开(公告)号：US5202717A

公开(公告)日：1993-04-13

申请号：US696858

申请日：1991-05-07

申请人： Mitsumasa Ookubo ,  Tsuyoshi Yaji ,  Yasushi Toizumi ,  Toyoji Sasaki ,  Shigeru Kato

发明人： Mitsumasa Ookubo ,  Tsuyoshi Yaji ,  Yasushi Toizumi ,  Toyoji Sasaki ,  Shigeru Kato

IPC分类号： G02B7/10

CPC分类号： G02B7/102

摘要： A plurality of lens groups are movable in the direction of an optical axis. A plurality of motors are provided for the lens groups, respectively, so as to drive the lens groups. A focusing distance detector detects the position of a lens group which is one of the lens groups and which is changed in position in accordance with a change in the focusing distance, and outputs focusing distance data in accordance with the data representing the detected position of the lens group. A lens position detector detects the positions of the lens groups other than the lens group. A memory stores positional relationships between the predetermined lens group and the other lens groups. A zooming operation member is used for commanding a zooming operation. A driving controller actuates that motor which corresponds to the lens group in accordance with the zooming operation in such a manner that the motor is driven for a driving distance determined on the basis of the focusing distance data, calculates driving distances of the other lens groups in accordance with the positions detected by the lens position detector and with the positional relationships stored in the memory being referred to, and then controls the motors which correspond to the other lens groups in accordance with the calculated driving distances.

摘要翻译： 多个透镜组可沿光轴方向移动。 分别为透镜组设置多个电动机，以驱动透镜组。 聚焦距离检测器检测作为透镜组之一的透镜组的位置，并且根据聚焦距离的变化改变位置，并且根据表示检测到的位置的数据输出聚焦距离数据 镜头组。 透镜位置检测器检测透镜组以外的透镜组的位置。 存储器存储预定透镜组和其它透镜组之间的位置关系。 缩放操作部件用于指示缩放操作。 驱动控制器根据变焦操作来驱动对应于透镜组的电动机，使得电动机被驱动基于聚焦距离数据确定的驱动距离，计算其他透镜组的驱动距离 根据由透镜位置检测器检测的位置和存储在存储器中的位置关系，然后根据计算出的驱动距离来控制与其它透镜组对应的电动机。