Tripod rack and pinion focussing mechanism rotatable relative to lens
    1.
    发明授权
    Tripod rack and pinion focussing mechanism rotatable relative to lens 失效
    三脚架齿条和小齿轮聚焦机构可相对于镜头旋转

    公开(公告)号:US4187020A

    公开(公告)日:1980-02-05

    申请号:US951206

    申请日:1978-10-13

    CPC分类号: G03B3/02 G02B7/04

    摘要: A photographic lens mount has a tripod portion that is rotatable about the optical axis of the lens. A rack and pinion type of focussing mechanism is used and the pinion is fixed with respect to the tripod mounting seat irrespective of the rotational position of the lens support and the camera body. The ring portion of the gear mechanism is formed on a ring that is rotatable with respect to the camera support around the optical axis.

    摘要翻译: 照相镜头支架具有可围绕透镜的光轴旋转的三脚架部分。 使用齿条和小齿轮类型的聚焦机构,并且小齿轮相对于三脚架安装座固定,而与透镜支架和照相机主体的旋转位置无关。 齿轮机构的环形部分形成在相对于照相机支撑件围绕光轴可旋转的环上。

    Lens barrel with biasing member positioned between two annular members
    3.
    发明授权
    Lens barrel with biasing member positioned between two annular members 失效
    具有位于两个环形构件之间的偏置构件的镜筒

    公开(公告)号:US5453879A

    公开(公告)日:1995-09-26

    申请号:US143758

    申请日:1993-11-01

    CPC分类号: G02B7/08

    摘要: A lens barrel is provided having a lens system, and two annular members that are engaged and rotatable relative to one another, with one of the annular members being arranged inside of the other. A lens group is connected to one of the two annular members, and a biasing mechanism for forcing the two annular members into flush tangential contact is provided. A line of contact of the two annular members is substantially parallel to an optical axis of the lens system.

    摘要翻译: 提供具有透镜系统的镜筒,以及相对于彼此接合和可旋转的两个环形构件,其中一个环形构件布置在另一个中。 透镜组连接到两个环形构件中的一个,并且提供用于迫使两个环形构件成平齐切向接触的偏置机构。 两个环形构件的接触线基本上平行于透镜系统的光轴。

    Lens barrel for different kinds of TV cameras
    4.
    发明授权
    Lens barrel for different kinds of TV cameras 失效
    镜头桶用于不同种类的电视摄像机

    公开(公告)号:US5500772A

    公开(公告)日:1996-03-19

    申请号:US267937

    申请日:1994-07-06

    申请人: Tadayoshi Ishii

    发明人: Tadayoshi Ishii

    IPC分类号: G02B7/04 G02B7/02

    CPC分类号: G02B7/04

    摘要: A common lens barrel can be detachably attached to a plurality of TV camera bodies each having at least one filter provided in front of an image pickup device. The filters of the respective camera bodies have different thicknesses, and the common lens barrel has a plurality of lens groups. The lens barrel includes a focusing mechanisms and a mechanism for varying a distance between specific lens groups of the plurality of lens groups in accordance with the thickness of the filter of the camera body to which the common lens barrel is attached.

    摘要翻译: 共同的镜筒可以可拆卸地附接到多个电视摄像机主体,每个电视摄像机具有设置在图像拾取装置前面的至少一个滤光器。 各个照相机主体的滤光片具有不同的厚度,并且公共透镜镜筒具有多个透镜组。 透镜镜筒包括聚焦机构和用于根据共用透镜镜筒附接到的照相机主体的过滤器的厚度来改变多个透镜组的特定透镜组之间的距离的机构。