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    • 57. 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
    • US08743469B2
    • 2014-06-03
    • US13446234
    • 2012-04-13
    • Tomoyuki NakamuraShoichi Takemoto
    • Tomoyuki NakamuraShoichi Takemoto
    • G02B15/14
    • 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。
    • 58. 发明授权
    • Laminated ceramic capacitor
    • 层压陶瓷电容器
    • US08009408B2
    • 2011-08-30
    • US12907207
    • 2010-10-19
    • Makoto MatsudaTomoyuki Nakamura
    • Makoto MatsudaTomoyuki Nakamura
    • H01G4/06
    • H01G4/1227H01G4/30
    • Better high-temperature load characteristics are obtained in a laminated ceramic capacitor including a dielectric ceramic layer with a thickness of 1 μm or less. The laminated ceramic capacitor includes a plurality of stacked dielectric ceramic layers, a plurality of internal electrode layers, each disposed between dielectric ceramic layers, and external electrodes that are electrically connected to internal electrode layers. In this laminated ceramic capacitor, when the thickness of each dielectric ceramic layer is denoted by tc and the thickness of each internal electrode layer is denoted by te, tc is 1 μm or less, and tc/te is equal to or less than 1.
    • 在包括厚度为1μm以下的电介质陶瓷层的层叠陶瓷电容器中,可获得更好的高温负荷特性。 叠层陶瓷电容器包括多个堆叠的电介质陶瓷层,各自设置在电介质陶瓷层之间的多个内部电极层和电连接到内部电极层的外部电极。 在这种层叠陶瓷电容器中,当每个介电陶瓷层的厚度由tc表示,每个内部电极层的厚度由te表示时,tc为1μm以下,tc / te为1以下。