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17 条记录 (耗时 0.027 秒)

    Polarization-maintaining optical fiber
    1.
    发明申请
    Polarization-maintaining optical fiber 有权
    极化维护光纤

    公开(公告)号：US20050031280A1

    公开(公告)日：2005-02-10

    申请号：US10937495

    申请日：2004-09-10

    申请人： Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

    发明人： Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

    IPC分类号： G02B6/024 ,  G02B6/10 ,  H01S3/06 ,  G02B6/17

    CPC分类号： G02B6/024 ,  G02B6/105

    摘要： A polarization-maintaining optical fiber which exhibits an excellent polarization-maintaining performance and significantly low splice loss when spliced with a polarization-maintaining optical fiber having a cladding 125 μm in diameter even if the polarization-maintaining optical fiber has a small-diameter cladding of about 80 μm. The polarization-maintaining optical fiber includes a core, a pair of stress-applying parts provided radially outwardly with respect to the core, and a cladding which surrounds the core and the stress-applying parts. With a diameter D of the stress-applying parts between 21 μm and 32 μm, a distance R between the stress-applying parts between 6 μm and 17 μm, and a relative refractive index difference Δ between 0.3% to 0.5%, a sufficiently large mode field diameter (MFD) is obtained; thus splice loss can be reduced.

    摘要翻译： 一种偏振保持光纤，其具有优异的偏振保持性能，并且即使在保偏光纤具有小直径包层的情况下，也具有直径为直径为100μm的具有包层直径为直径为100μm的保偏光纤 约80妈 偏振保持光纤包括芯，相对于芯径向向外设置的一对应力施加部以及围绕芯和应力施加部的包层。 应力施加部分的直径D在21μm和32μm之间，应力施加部分之间的距离R在6μm和17μm之间，相对折射率差值差值在0.3％至0.5％之间，足够大 获得模场直径（MFD）; 因此可以减少接头损耗。

    Polarization-maintaining optical fiber
    2.
    发明授权
    Polarization-maintaining optical fiber 有权
    极化维护光纤

    公开(公告)号：US07289687B2

    公开(公告)日：2007-10-30

    申请号：US10937495

    申请日：2004-09-10

    申请人： Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

    发明人： Katsuaki Izoe ,  Kuniharu Himeno ,  Yukihiro Sakaguchi ,  Tatsuya Itoh

    IPC分类号： G02B6/00

    CPC分类号： G02B6/024 ,  G02B6/105

    摘要： A polarization-maintaining optical fiber which exhibits an excellent polarization-maintaining performance and significantly low splice loss when spliced with a polarization-maintaining optical fiber having a cladding 125 μm in diameter even if the polarization-maintaining optical fiber has a small-diameter cladding of about 80 μm. The polarization-maintaining optical fiber includes a core, a pair of stress-applying parts provided radially outwardly with respect to the core, and a cladding which surrounds the core and the stress-applying parts. With a diameter D of the stress-applying parts between 21 μm and 32 μm, a distance R between the stress-applying parts between 6 μm and 17 μm, and a relative refractive index difference Δ between 0.3% to 0.5%, a sufficiently large mode field diameter (MFD) is obtained; thus splice loss can be reduced.

    摘要翻译： 一种偏振保持光纤，其具有优异的偏振保持性能，并且即使在保偏光纤具有小直径包层的情况下，也具有直径为直径为100μm的具有包层直径为直径为100μm的保偏光纤 约80妈 偏振保持光纤包括芯，相对于芯径向向外设置的一对应力施加部以及围绕芯和应力施加部的包层。 应力施加部分的直径D在21μm和32μm之间，应力施加部分之间的距离R在6μm和17μm之间，相对折射率差值差值在0.3％至0.5％之间，足够大 获得模场直径（MFD）; 因此可以减少接头损耗。

    Image processing device
    3.
    发明授权
    Image processing device 失效
    图像处理装置

    公开(公告)号：US5748794A

    公开(公告)日：1998-05-05

    申请号：US449542

    申请日：1995-05-24

    申请人： Hiroshi Maeda ,  Tatsuya Itoh ,  Masatsugu Nakamura

    发明人： Hiroshi Maeda ,  Tatsuya Itoh ,  Masatsugu Nakamura

    IPC分类号： H04N1/40 ,  H04N1/409

    CPC分类号： H04N1/4092 ,  H04N1/40087

    摘要： An image processing apparatus and method which can be selectively used in a variable mode and a fixed mode. In the variable mode, the quantizing values and thresholds for converting high valued image gradation into low valued image gradation can be changed so as to vary the surface gray levels of a printable image at a fixed laser gradation value. In the fixed mode, constant thresholds and quantizing values are used. The use of selectable operation modes enables easy printing operation with increased quality. Also, constant quality of printable images despite environmental changes may be realized by sensing and comparing currently read reference data with initially stored reference data and subsequently correcting quantizing values and thresholds in accordance with the compared result.

    摘要翻译： 可以选择性地以可变模式和固定模式使用的图像处理装置和方法。 在可变模式中，可以改变用于将高值图像灰度转换为低值图像灰度的量化值和阈值，以便以固定的激光灰度值改变可打印图像的表面灰度级。 在固定模式下，使用恒定阈值和量化值。 使用可选择的操作模式可以轻松实现打印操作，提高质量。 此外，尽管环境变化，可以通过感测和比较当前读取的参考数据与最初存储的参考数据并随后根据比较的结果校正量化值和阈值来实现可打印图像的恒定质量。

    Fe-Ni based material for shadow mask
    8.
    发明授权
    Fe-Ni based material for shadow mask 失效
    基于Fe-Ni的荫罩材料

    公开(公告)号：US06547893B1

    公开(公告)日：2003-04-15

    申请号：US09926691

    申请日：2001-12-04

    申请人： Tatsuya Itoh ,  Tsutomu Omori

    发明人： Tatsuya Itoh ,  Tsutomu Omori

    IPC分类号： C22C3808

    CPC分类号： C22C38/08 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0268 ,  C21D8/0273 ,  C22C38/105 ,  H01J9/142 ,  H01J29/07 ,  H01J2229/0733

    摘要： It is a Fe—Ni based shadow mask material of Fe—Ni alloy or Fe—Ni—Co alloy used as a material for a color television cathode tube or the like, and relates to a material wherein the material has a texture that an X-ray intensity ratio Ir of cubic orientation (100) to twinning orientation (221) thereof in a (111) pole figure is a range of 0.5-5:1 and segregation of Ni, Mn or the like is less, and a section cleanness defined according to JIS G0555 is made to be not more than 0.05% to reduce the occurrence of streak or mottling in the etching.

    摘要翻译： 作为用作彩色电视阴极管等的材料的Fe-Ni合金或Fe-Ni-Co合金的Fe-Ni基荫罩材料，涉及材料具有X （111）极图中的立方取向（100）<001>与孪晶取向（221）<212的射线强度比Ir为0.5-5:1的范围，Ni，Mn等的偏析为 并且根据JIS G0555定义的部分清洁度不大于0.05％以减少蚀刻中条纹或斑点的发生。