Apparatus for controlling the lens position of a zoom lens
    52.
    发明授权
    Apparatus for controlling the lens position of a zoom lens 失效
    用于控制变焦透镜的透镜位置的装置

    公开(公告)号:US5448413A

    公开(公告)日:1995-09-05

    申请号:US347180

    申请日:1994-11-22

    IPC分类号: G02B7/10 G02B15/14

    CPC分类号: G02B7/102

    摘要: The present invention relates to an apparatus for controlling the lens position of a zoom lens. The zoom lens comprises a plurality of lens units movable along the optical axis for zooming, a focal length setting unit for setting the focal length of the zoom lens, an object distance setting unit for setting an object distance, a store containing a plurality of inherent coefficients and an arithmetic logic unit which specifies focal length information and object distance information as variables, and uses the coefficients in calculating a position to which a lens unit should move.

    摘要翻译: 本发明涉及一种用于控制变焦镜头的镜头位置的装置。 变焦镜头包括可沿着光轴移动以便变焦的多个透镜单元,用于设置变焦镜头的焦距的焦距设置单元,用于设置物距的物距设置单元,包含多个固有的 系数和算术逻辑单元,其将焦距信息和对象距离信息指定为变量,并且在计算透镜单元应该移动的位置时使用系数。

    Diaphragm device
    54.
    发明授权
    Diaphragm device 失效
    隔膜装置

    公开(公告)号:US5072249A

    公开(公告)日:1991-12-10

    申请号:US440645

    申请日:1989-11-24

    申请人: Setsuo Yoshida

    发明人: Setsuo Yoshida

    IPC分类号: G03B9/06

    CPC分类号: G03B9/06

    摘要: A diaphragm device of reduced diameter in the entirety comprising a base plate having a substantially round central opening, first diaphragm blades whose one ends are supported about respective pivot pins on the base plate, a first member arranged to turn all the first diaphragm blades about the pivot pins, the same number of second diaphragm blades as that of the first diaphragm blades arranged in confronting relation to the first diaphragm blades and whose one ends are supported about respective pivot pins on the base plate, and a second member arranged to turn all the second diaphragm blades about the pivot pins.

    摘要翻译: 整体减小的隔膜装置包括具有基本上圆形的中心开口的基板,其一端被支撑在基板上的相应枢轴销上的第一光圈叶片,布置成使所有第一光阑叶片围绕 枢转销,与第一光阑叶片布置成与第一光阑叶片相对设置的相同数量的第二光阑叶片,并且其一端被支撑在基板上的各个枢轴销上,第二部件被布置成将所有 围绕枢轴销的第二光阑叶片。