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    Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths
    1.
    发明申请
    Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths 失效
    用于不同焦距的摄影录像机的测距摄像机上的广角自动取景器

    公开(公告)号：US20080031613A1

    公开(公告)日：2008-02-07

    申请号：US11882547

    申请日：2007-08-02

    申请人： Kathrin Keller ,  Uwe Reinstadtler

    发明人： Kathrin Keller ,  Uwe Reinstadtler

    IPC分类号： G03B13/06 ,  H04N5/225

    CPC分类号： G03B13/08 ,  G02B13/04 ,  G02B23/14

    摘要： Described is a wide-angle slip-on viewfinder (1) on rangefinder cameras for analog and digital wide-angle recordings of different image recording formats with lenses of different focal lengths, comprising three lens groups (LG1, LG2, LG3), a frame/mask unit (10) and a partially transmissive prism cube (8) which is designed as a combination element, wherein, on the light entrance side (4) in the viewfinder beam path (9), a first lens group (LG1) has a negative refractive power and the second and third lens groups (LG2, LG3) have a positive refractive power, wherein the second lens group (LG2) is composed of a first lens (L3) arranged downstream of the first lens group (LG1) and a second lens (L4) arranged on the light exit side (7) and the partially transmissive prism cube (8) is arranged between the lenses (L3, L4) and the third lens group (LG3) is arranged in a mask imaging beam path (11) which is at right angles to the viewfinder beam path (9) between the frame/mask unit (10) and the partially transmissive prism cube (8).

    摘要翻译： 描述了一种用于采用不同焦距镜头的不同图像记录格式的模拟和数字广角拍摄的测距摄像机的广角自动取景器（1），包括三个镜头组（LG 1，LG 2，LG 3） ，设置为组合元件的框架/掩模单元（10）和部分透射的棱镜立方体（8），其中在取景器光束路径（9）中的光入射侧（4）上具有第一透镜组 LG 1）具有负屈光力，第二透镜组（LG2，LG3）具有正折射力，其中第二透镜组（LG 2）由布置在第二透镜组 布置在光出射侧（7）和部分透射棱镜立方体（8）上的第一透镜组（LG 1）和第二透镜（L 4）布置在透镜（L 3，L 4）和第三透镜 组（LG 3）布置在与取景器光束路径成直角的掩模成像光束路径（11）中 9）在框架/掩模单元（10）和部分透射棱镜立方体（8）之间。

    Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths
    3.
    发明授权
    Wide-angle slip-on viewfinder on rangefinder cameras for photographic recordings with different focal lengths 失效
    用于不同焦距的摄影录像机的测距摄像机上的广角自动取景器

    公开(公告)号：US07706682B2

    公开(公告)日：2010-04-27

    申请号：US11882547

    申请日：2007-08-02

    申请人： Kathrin Keller ,  Uwe Reinstädtler

    发明人： Kathrin Keller ,  Uwe Reinstädtler

    IPC分类号： G03B13/06 ,  G02B9/12

    CPC分类号： G03B13/08 ,  G02B13/04 ,  G02B23/14

    摘要： Described is a wide-angle slip-on viewfinder (1) on rangefinder cameras for analog and digital wide-angle recordings of different image recording formats with lenses of different focal lengths, comprising three lens groups (LG1, LG2, LG3), a frame/mask unit (10) and a partially transmissive prism cube (8) which is designed as a combination element, wherein, on the light entrance side (4) in the viewfinder beam path (9), a first lens group (LG1) has a negative refractive power and the second and third lens groups (LG2, LG3) have a positive refractive power, wherein the second lens group (LG2) is composed of a first lens (L3) arranged downstream of the first lens group (LG1) and a second lens (L4) arranged on the light exit side (7) and the partially transmissive prism cube (8) is arranged between the lenses (L3, L4) and the third lens group (LG3) is arranged in a mask imaging beam path (11) which is at right angles to the viewfinder beam path (9) between the frame/mask unit (10) and the partially transmissive prism cube (8).

    摘要翻译： 描述了一种用于采用不同焦距的镜头的不同图像记录格式的模拟和数字广角录像的测距摄像机上的广角自动取景器（1），包括三个镜头组（LG1，LG2，LG3），一个框架 /掩模单元（10）和被设计为组合元件的部分透射棱镜立方体（8），其中在取景器光路（9）中的光入射侧（4）上，第一透镜组（LG1）具有 负折射光焦度和第二透镜组（LG2，LG3）具有正折射力，其中第二透镜组（LG2）由布置在第一透镜组（LG1）下游的第一透镜（L3）和 布置在光出射侧（7）和部分透射棱镜立方体（8）之间的第二透镜（L4）布置在透镜（L3，L4）之间，第三透镜​​组（LG3）布置在掩模成像光束路径 （11），其与框架/掩模单元（10）之间的取景器光束路径（9）成直角 部分透射的棱镜立方体（8）。