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    • 5. 发明申请
    • OPTICAL FIBER, OPTICAL FIBER CORD, AND OPTICAL FIBER CABLE
    • 光纤,光纤线和光纤电缆
    • US20130094825A1
    • 2013-04-18
    • US13805465
    • 2012-03-19
    • Tatsuya KonishiTetsuya NakanishiTetsuya Hayashi
    • Tatsuya KonishiTetsuya NakanishiTetsuya Hayashi
    • G02B6/036
    • G02B6/03638G02B6/0365
    • A trench optical fiber that stably realizes a small transmission loss includes (1) a core extending in an axial direction while containing an axial center of the fiber, the core having a diameter d1 of 7.0 μm to 7.4 μm; (2) a first optical cladding layer surrounding the core and having an outside diameter d2 of 1.67 dl to 2.5 dl; (3) a second optical cladding layer surrounding the first optical cladding layer; and (4) a jacket layer surrounding the second optical cladding layer and containing fluorine having a concentration of 0.06 wt % or higher. A relative refractive index difference Δ1 of the core with respect to the jacket layer is 0.31% to 0.37%. A relative refractive index difference Δ2 of the first optical cladding layer with respect to the jacket layer is +0.02% or larger and smaller than Δ1. A relative refractive index difference Δ3 of the second optical cladding layer with respect to the jacket layer is −0.2% or smaller.
    • 稳定地实现小的传输损耗的沟槽光纤包括:(1)沿轴向延伸的芯,同时包含纤维的轴向中心,芯的直径d1为7.0μm至7.4μm; (2)包围芯的第一光学包层,外径d2为1.67dl至2.5dl; (3)围绕所述第一光学包层的第二光学包层; 和(4)围绕第二光学包层并且含有浓度为0.06重量%以上的氟的护套层。 芯相对于护套层的相对折射率差Δ1为0.31%至0.37%。 第一光学包层相对于护套层的相对折射率差Δ2为+ 0.02%以上且小于Delta1。 第二光学包覆层相对于护套层的相对折射率差Δ3为-0.2%以下。
    • 8. 发明申请
    • PHOTOELECTRIC CONVERSION UNIT
    • 光电转换单元
    • US20110100428A1
    • 2011-05-05
    • US12992551
    • 2009-05-13
    • Eisuke SasaokaTetsuya NakanishiKazuo Nakamae
    • Eisuke SasaokaTetsuya NakanishiKazuo Nakamae
    • H01L31/052H01L31/0232H01J3/14F21V5/00
    • G02B6/4298G02B6/0281
    • A photoelectric conversion unit in which efficiency of optical coupling and stability of mechanical coupling improve is obtained.The photoelectric conversion unit includes a light density conversion element 11 which changes at an output end face the density of light that has impinged on an incident end face and outputs the light, and a photoelectric conversion element 13. The photoelectric conversion element 13 is arranged closely to a high light-density side of the light density conversion element 11, and integrated with this light density conversion element 11. The photoelectric conversion element 13 can be a solar cell or a light emission medium. In the light density conversion element 11, it is preferable that a refractive index profile in the radial direction in a section becomes a square distribution. Further, the light density conversion element 11 uses silica glass in a base member, and by changing the addition amount of impurity added in this glass, a refractive index profile is formed.
    • 获得光耦合效率和机械耦合稳定性提高的光电转换单元。 光电转换单元包括在输出端变化的光密度转换元件11,其面对已经入射到入射端面上的光的密度并输出光;以及光电转换元件13.光电转换元件13紧密配置 到光密度转换元件11的高光密度侧,并与该光密度转换元件11集成。光电转换元件13可以是太阳能电池或发光介质。 在光密度转换元件11中,部分中的径向折射率分布优选为平方分布。 此外,光密度转换元件11使用基底中的石英玻璃,并且通过改变添加在该玻璃中的杂质的添加量,形成折射率分布。