利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.021 秒)

    ZOOM LENS, IMAGING DEVICE, AND PORTABLE DIGITAL DEVICE
    7.
    发明申请
    ZOOM LENS, IMAGING DEVICE, AND PORTABLE DIGITAL DEVICE 有权
    变焦镜头，成像设备和便携式数字设备

    公开(公告)号：US20130222922A1

    公开(公告)日：2013-08-29

    申请号：US13777176

    申请日：2013-02-26

    申请人： Hiromichi ATSUUMI ,  Yohei Takano

    发明人： Hiromichi ATSUUMI ,  Yohei Takano

    IPC分类号： G02B15/14

    CPC分类号： G02B15/14 ,  G02B13/009 ,  G02B15/17

    摘要： A zoom lens includes, in order from an object side along an optical axis, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a negative refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a positive refractive power, wherein with a change in a magnification from a wide-angle end to a telephoto end, an interval between the first lens group and the second lens group is increased, the interval between the second lens group and the third lens group is changed, the interval between the third lens group and the fourth lens group is decreased, the interval between the fourth lens group and the fifth lens group is decreased, and focusing is performed by the third lens group.

    摘要翻译： 变焦透镜从物体侧沿着光轴依次包括具有正折光力的第一透镜组，具有负屈光力的第二透镜组，具有负屈光力的第三透镜组，第四透镜组 具有正折射光焦度和具有正折光力的第五透镜组，其中随着从广角端到望远端的放大率的变化，第一透镜组和第二透镜组之间的间隔增大， 第二透镜组和第三透镜组之间的间隔改变，第三透镜​​组和第四透镜组之间的间隔减小，第四透镜组和第五透镜组之间的间隔减小，并且聚焦由 第三个镜头组。

    OPTICAL SCANNER AND IMAGE FORMING APPARATUS
    8.
    发明申请
    OPTICAL SCANNER AND IMAGE FORMING APPARATUS 有权
    光学扫描仪和图像形成装置

    公开(公告)号：US20070081217A1

    公开(公告)日：2007-04-12

    申请号：US11609796

    申请日：2006-12-12

    申请人： Yoshinori HAYASHI ,  Hiromichi ATSUUMI

    发明人： Yoshinori HAYASHI ,  Hiromichi ATSUUMI

    IPC分类号： G02B26/08

    CPC分类号： G02B26/125

    摘要： An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens closest to a deflection reflecting surface has a negative power in a vertical scanning direction, and is a special toric surface in which a radius of curvature in a vertical scanning changes from an optical axis of the lens surface toward a periphery of the horizontal scanning direction. An F number of the beams toward the surface to be scanned of the scanning lens in the vertical scanning direction is larger in a peripheral part than in a central part in an effective scanning width.

    摘要翻译： 光学扫描器包括光源，光耦合器，光线图像单元，偏转器和光学扫描单元。 光学扫描单元包括将光束引导到待扫描表面的扫描透镜。 最靠近偏转反射面的扫描透镜的偏转器侧的表面在垂直扫描方向上具有负的功率，并且是垂直扫描中的曲率半径从透镜的光轴变化的特殊复曲面 表面朝向水平扫描方向的周边。 在扫描透镜的垂直扫描方向上要扫描的表面的光束数目F在周边部分比在有效扫描宽度中的中心部分大。