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    • 64. 发明申请
    • Zoom lens
    • 变焦镜头
    • US20080080064A1
    • 2008-04-03
    • US11984383
    • 2007-11-16
    • Shoji KogoMasae SatoSusumu YamaguchiHiroshi SatoYuuichi Atarashi
    • Shoji KogoMasae SatoSusumu YamaguchiHiroshi SatoYuuichi Atarashi
    • G02B15/14
    • G02B3/14G02B26/004
    • In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups arranged in the lens system includes a refractive power variable element of a transmission type which has a compensation function to correct focus movement caused by zooming and a focus function to correct focus movement caused by a variation in inter-object distance. The refractive power variable element is a liquid optical element including a first liquid having a conductivity or a polarity and a second liquid which is not mixed with the first liquid, the first liquid and the second liquid being enclosed in a container fluid-tight so as to define an interface therebetween having a predetermined shape, the liquid optical element being arranged such that a refractive power thereof is adjusted by changing a curvature of the interface.
    • 在本发明中,为了提供具有少量待驱动的光学元件组的简单变焦透镜和简单的移动机构,布置在透镜系统中的多个光学元件组中的至少一个包括折射力可变元件 具有用于校正由变焦引起的焦点移动的补偿功能的传播类型和用于校正由物体间距离变化引起的聚焦移动的聚焦功能。 折射力可变元件是包括具有导电性或极性的第一液体和不与第一液体混合的第二液体的液体光学元件,第一液体和第二液体被密封在容器中,以便流体密封 为了在其间限定具有预定形状的界面,液体光学元件被布置成通过改变界面的曲率来调节其屈光力。
    • 68. 发明授权
    • Image pickup lens, image pickup unit and portable terminal
    • 摄像镜头,摄像单元和便携式终端
    • US06813099B2
    • 2004-11-02
    • US10614596
    • 2003-07-07
    • Susumu Yamaguchi
    • Susumu Yamaguchi
    • G02B934
    • G02B13/004G02B9/34
    • An image pickup lens has four lenses arranged in an order of a first lens, a second lens, a third lens and a fourth lens from an object side. The first lens has positive refractive power and has a convex surface facing toward an object side, the second lens has the positive refractive power, the third lens has negative refractive power and has a concave surface facing toward the object side to be formed in a meniscus shape, and the fourth lens has the positive or negative refractive power and has a convex surface facing toward the object side to be formed in the meniscus shape.
    • 图像拾取透镜具有从物体侧按照第一透镜,第二透镜,第三透镜​​和第四透镜的顺序布置的四个透镜。 第一透镜具有正折光力并且具有朝向物体侧的凸表面,第二透镜具有正折光力,第三透镜​​具有负折射光焦度并且具有朝向物侧的凹面以形成在弯液面中 并且第四透镜具有正或负折射光焦度,并且具有朝向物体侧的凸形表面以形成为弯月面形状。
    • 69. 发明授权
    • Real image type zoom finder
    • 真实图像类型缩放查找器
    • US6038069A
    • 2000-03-14
    • US097742
    • 1998-06-16
    • Susumu Yamaguchi
    • Susumu Yamaguchi
    • G02B23/14G02B23/00G02B15/14
    • G02B23/14
    • A real image type zoom finder includes: an objective lens having a plurality of lenses, having a positive refracting power; a field diaphragm provided in the vicinity of a focal point of the objective lens, for defining a viewing field; a structure for erecting an image formed by the objective lens; and an eyepiece having a positive refracting power for enlarging an image formed by the objective lens and the field diaphragm. The objective lens includes at least a first lens group provided closest to an object side, having a negative refracting power, and satisfies the following conditions:1.9
    • 实像图像缩放取景器包括:具有多个透镜的具有正折射光焦度的物镜; 设置在所述物镜的焦点附近的用于限定观察视场的场光阑; 用于竖立由所述物镜形成的图像的结构; 以及具有正折射力的目镜,用于放大由物镜和场光阑形成的图像。 物镜至少包括最靠近物体侧的第一透镜组,具有负折射率,满足以下条件:1.9