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    • 4. 发明授权
    • Zoom lens and image pickup apparatus including the same
    • 缩放透镜和包括其的图像拾取装置
    • US08593736B2
    • 2013-11-26
    • US13438888
    • 2012-04-04
    • Tomoyuki Nakamura
    • Tomoyuki Nakamura
    • G02B15/14
    • G02B15/173
    • A zoom lens includes, in order from an object side: a first lens unit having a positive refractive power which does not move for varying magnification; a second lens unit having a negative refractive power which moves for varying magnification; a third lens unit having a positive refractive power which moves for varying magnification; and a fourth lens unit having a positive refractive power which does not move for varying magnification, in which: the first lens unit includes a first sub lens unit which does not move for focusing and a second sub lens unit having a positive refractive power which moves for focusing; the first sub lens unit includes three lenses having negative, positive, and positive refractive powers; and each of the elements is appropriately set.
    • 变焦透镜从物体的顺序依次包括具有正偏转光焦度的第一透镜单元,其不会为变化的倍率而移动; 具有负折射力的第二透镜单元,其以变化的倍率移动; 具有正折射力的第三透镜单元,其移动以变化放大倍数; 以及具有正折射力的第四透镜单元,其对于变化的放大倍率不移动,其中:第一透镜单元包括不移动用于聚焦的第一子透镜单元和具有正折射力的第二子透镜单元, 用于聚焦; 第一子透镜单元包括具有负的,正的和正的折射光焦度的三个透镜; 并且适当地设置每个元件。
    • 5. 发明授权
    • Laminated ceramic capacitor
    • 层压陶瓷电容器
    • US08526164B2
    • 2013-09-03
    • US13039379
    • 2011-03-03
    • Tomoyuki NakamuraTomonori MurakiMakoto MatsudaAkihiro Shiota
    • Tomoyuki NakamuraTomonori MurakiMakoto MatsudaAkihiro Shiota
    • H01G4/06C04B35/00
    • H01G4/06
    • A laminated ceramic capacitor which provides favorable properties and characteristics such as dielectric characteristics, insulation properties, temperature characteristics, and high temperature load characteristics and provides favorable thermal shock resistance, even when dielectric ceramic layers are reduced in layer thickness to increase the number of layers has dielectric ceramic layers containing, as their main constituent, a barium titanate based compound represented by the general formula ABO3 and internal electrodes containing Ni as their main constituent, which are stacked alternately. A crystalline oxide containing at least Mg and Li is present in at least either one of the internal electrodes and the dielectric ceramic layers. The crystalline oxide is preferably present mostly in contact with Ni in the internal electrodes.
    • 一种叠层陶瓷电容器,其具有良好的性能和特性,例如介电特性,绝缘特性,温度特性和高温负载特性,并提供良好的耐热冲击性,即使介电陶瓷层的厚度减小以增加层数, 以作为主要成分的由通式ABO3表示的钛酸钡类化合物和以Ni为主要成分的内部电极交替叠层的介电陶瓷层。 至少包含Mg和Li的结晶氧化物存在于内部电极和电介质陶瓷层中的至少一个中。 结晶氧化物优选主要与内部电极中的Ni接触。
    • 7. 发明授权
    • Autofocusing zoom lens
    • 自动对焦变焦镜头
    • US08374497B2
    • 2013-02-12
    • US13535960
    • 2012-06-28
    • Tomoyuki Nakamura
    • Tomoyuki Nakamura
    • G03B17/00
    • G03B13/36G02B7/08G02B7/282H04N5/23212
    • In an autofocusing zoom lens, a depth of focus ε is obtained based on an aperture value Fno of a variable diaphragm and a diameter of a permissible circle of confusion δ. A focal position variation amount Δsk for a predetermined positional displacement amount ΔFp0 of a focusing lens unit is obtained according to a position Fp of the focusing lens unit and a variable magnification state Zp. If a predetermined variation amount ΔFp of the focusing lens unit satisfies a first condition, the focusing lens unit is not driven. If the first condition is not satisfied and a second condition is satisfied, the focusing lens unit is driven based on a second autofocusing unit, and if the second condition is not satisfied, the focusing lens unit is driven based on a first autofocusing unit.
    • 在自动对焦变焦镜头中,焦距&egr 是基于可变隔膜的孔径值Fno和容许的混淆圈的直径δ获得的。 根据聚焦透镜单元的位置Fp和可变放大状态Zp,获得聚焦透镜单元的预定位置偏移量&Dgr; Fp0的焦点位置变化量&Dgr; sk。 如果聚焦透镜单元的预定变化量&Dgr; Fp满足第一条件,则不驱动聚焦透镜单元。 如果不满足第一条件并且满足第二条件,则基于第二自动对焦单元驱动聚焦透镜单元,并且如果不满足第二条件,则基于第一自动对焦单元来驱动聚焦透镜单元。
    • 8. 发明申请
    • AUTOFOCUSING ZOOM LENS
    • 自动对焦变焦镜头
    • US20120269500A1
    • 2012-10-25
    • US13535960
    • 2012-06-28
    • Tomoyuki Nakamura
    • Tomoyuki Nakamura
    • G03B17/00
    • G03B13/36G02B7/08G02B7/282H04N5/23212
    • In an autofocusing zoom lens, a depth of focus ε is obtained based on an aperture value Fno of a variable diaphragm and a diameter of a permissible circle of confusion δ. A focal position variation amount Δsk for a predetermined positional displacement amount ΔFp0 of a focusing lens unit is obtained according to a position Fp of the focusing lens unit and a variable magnification state Zp. If a predetermined variation amount ΔFp of the focusing lens unit satisfies a first condition, the focusing lens unit is not driven. If the first condition is not satisfied and a second condition is satisfied, the focusing lens unit is driven based on a second autofocusing unit, and if the second condition is not satisfied, the focusing lens unit is driven based on a first autofocusing unit.
    • 在自动对焦变焦镜头中,焦距&egr 是基于可变隔膜的孔径值Fno和容许的混淆圈的直径δ获得的。 根据聚焦透镜单元的位置Fp和可变放大状态Zp,获得聚焦透镜单元的预定位置偏移量&Dgr; Fp0的焦点位置变化量&Dgr; sk。 如果聚焦透镜单元的预定变化量&Dgr; Fp满足第一条件,则不驱动聚焦透镜单元。 如果不满足第一条件并且满足第二条件,则基于第二自动对焦单元驱动聚焦透镜单元,并且如果不满足第二条件,则基于第一自动对焦单元来驱动聚焦透镜单元。
    • 9. 发明申请
    • ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME
    • 变焦镜头和图像拾取装置包括它们
    • US20120262801A1
    • 2012-10-18
    • US13438888
    • 2012-04-04
    • Tomoyuki NAKAMURA
    • Tomoyuki NAKAMURA
    • G02B15/14
    • G02B15/173
    • A zoom lens includes, in order from an object side: a first lens unit having a positive refractive power which does not move for varying magnification; a second lens unit having a negative refractive power which moves for varying magnification; a third lens unit having a positive refractive power which moves for varying magnification; and a fourth lens unit having a positive refractive power which does not move for varying magnification, in which: the first lens unit includes a first sub lens unit which does not move for focusing and a second sub lens unit having a positive refractive power which moves for focusing; the first sub lens unit includes three lenses having negative, positive, and positive refractive powers; and each of the elements is appropriately set.
    • 变焦透镜从物体的顺序依次包括具有正偏转光焦度的第一透镜单元,其不会为变化的倍率而移动; 具有负折射力的第二透镜单元,其以变化的倍率移动; 具有正折射力的第三透镜单元,其移动以变化放大倍数; 以及具有正折射力的第四透镜单元,其对于变化的放大倍率不移动,其中:第一透镜单元包括不移动用于聚焦的第一子透镜单元和具有正折射力的第二子透镜单元, 用于聚焦; 第一子透镜单元包括具有负的,正的和正的折射光焦度的三个透镜; 并且适当地设置每个元件。
    • 10. 发明申请
    • ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME
    • 变焦镜头和图像拾取装置包括它们
    • US20120262608A1
    • 2012-10-18
    • US13446234
    • 2012-04-13
    • Tomoyuki NAKAMURAShoichi TAKEMOTO
    • Tomoyuki NAKAMURAShoichi TAKEMOTO
    • G02B15/14H04N5/262
    • G02B15/173
    • A zoom lens includes a first lens unit having a positive refractive power which does not move for zooming; a second lens unit having a negative refractive power which moves during zooming; a third lens unit having a negative refractive power which moves during zooming; a fourth lens unit having a positive refractive power which moves during zooming; and a fifth lens unit having a positive refractive power which does not move for zooming. Air intervals (L2w and L2t) between the second lens unit and the third lens unit at a wide-angle end and at a telephoto end, respectively, an air interval (L3w) between the third lens unit and the fourth lens unit at the wide-angle end, a focal length (f1) of the first lens unit, and a combined focal length (f23w) of the second lens unit and the third lens unit at the wide-angle end are appropriately set.
    • 变焦透镜包括具有正折射力的第一透镜单元,其不能移动用于变焦; 具有在变焦期间移动的负折光力的第二透镜单元; 具有在变焦期间移动的负折光力的第三透镜单元; 具有正折射力的第四透镜单元,其在变焦期间移动; 以及具有正折射力的第五透镜单元,其不能移动用于变焦。 在第二透镜单元和第三透镜单元之间的广角端和望远端的空气间隔(L2w和L2t)分别在第三透镜单元和第四透镜单元之间的空间间隔(L3w)在宽 第一透镜单元的焦距(f1)和广角端的第二透镜单元和第三透镜单元的组合焦距(f23w)被适当地设定。