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60 条记录 (耗时 0.035 秒)

    Optical deflector and optical switch
    52.
    发明授权
    Optical deflector and optical switch 有权
    光学偏转器和光开关

    公开(公告)号：US06879739B2

    公开(公告)日：2005-04-12

    申请号：US10082269

    申请日：2002-02-26

    申请人： Motoyuki Nishizawa ,  Masatoshi Ishii ,  Yasuo Yamagishi

    发明人： Motoyuki Nishizawa ,  Masatoshi Ishii ,  Yasuo Yamagishi

    IPC分类号： G02F1/05 ,  G02F1/295 ,  G02F1/313

    CPC分类号： G02F1/295 ,  G02F1/05 ,  G02F1/313

    摘要： An optical deflector including an optical waveguide of a dielectric material having electrooptical effect; and a pair of electrodes opposed to each other across the optical waveguide. An electric field is applied between the opposed electrodes to change a refractive index of the dielectric material to thereby control a propagating direction of signal light propagating in the optical waveguide, wherein the dielectric material has a first refractive index in its initial state, has a second refractive index by application of an electric field of a first polarity, and retains as a third refractive index a refractive index obtained after the electric field has been removed. The dielectric material having the third refractive index has the first refractive index by the application of an electric field of a second polarity different from the first polarity and removal of the electric field.

    摘要翻译： 一种光偏转器，包括具有电光效应的介电材料的光波导; 以及在光波导上彼此相对的一对电极。 在相对电极之间施加电场以改变介电材料的折射率，从而控制在光波导中传播的信号光的传播方向，其中电介质材料在其初始状态下具有第一折射率，具有第二 通过施加第一极性的电场的折射率，并且将电场去除之后获得的折射率保持为第三折射率。 具有第三折射率的介电材料通过施加与第一极性不同的第二极性的电场和电场的去除而具有第一折射率。

    Optical waveguide structure and optical module
    53.
    发明申请
    Optical waveguide structure and optical module 有权
    光波导结构和光模块

    公开(公告)号：US20050058399A1

    公开(公告)日：2005-03-17

    申请号：US10937881

    申请日：2004-09-10

    申请人： Motoyuki Nishizawa ,  Koji Tsukamoto ,  Masayuki Kato ,  Yasuo Yamagishi

    发明人： Motoyuki Nishizawa ,  Koji Tsukamoto ,  Masayuki Kato ,  Yasuo Yamagishi

    IPC分类号： G02B6/122 ,  G02B6/42 ,  G02B6/26

    CPC分类号： G02B6/4214 ,  G02B6/4204 ,  G02B6/421 ,  G02B6/4292

    摘要： An optical waveguide structure capable of optically coupling a surface type optical device, such as a surface emitting laser diode or a photodiode, and a transmission medium, such as an optical fiber, located so that their light output surface and light input surface will form an angle of about 90° with each other simply and easily. The optical waveguide structure comprises a first clad section having a curved surface for gradually turning the direction in which light travels almost squarely and a groove formed in the curved surface along the direction in which light travels, a core section which is made from a transparent material with a refractive index higher than the refractive index of the first clad section and with which the groove is filled in, and a second clad section which covers an exposed surface of the core section and the curved surface of the first clad section and which is integrated with the first clad section.

    摘要翻译： 能够使诸如表面发射激光二极管或光电二极管的表面型光学器件和诸如光纤的传输介质光学耦合的光波导结构，使得它们的光输出表面和光输入表面将形成 约90°的角度简单而容易。 光波导结构包括第一包层部分，其具有用于逐渐转动光线几乎正交的方向的弯曲表面和沿着光线行进的方向在曲面中形成的槽，由透明材料制成的芯部分 其折射率高于第一包层部分的折射率并且其中填充有凹槽;以及第二包层部分，其覆盖芯部的暴露表面和第一包层部分的弯曲表面，并且其被集成 与第一包层部分。

    Method and apparatus for designing printed-circuit board
    56.
    发明授权
    Method and apparatus for designing printed-circuit board 有权

    公开(公告)号：US06662345B2

    公开(公告)日：2003-12-09

    申请号：US10155115

    申请日：2002-05-28

    申请人： Hiroki Uchida ,  Yasuo Yamagishi

    发明人： Hiroki Uchida ,  Yasuo Yamagishi

    IPC分类号： G06F1750

    CPC分类号： G06F17/50 ,  G06F17/5018 ,  G06F17/5036 ,  G06F17/5072 ,  G06F2217/80 ,  H05K3/0005 ,  H05K3/3494

    摘要： A thermal analysis in heating a print-circuit board in a reflowing furnace is simulated by a processor using data required for the design and thermal analysis of the printed-circuit board that carries solder-bonded components. The result of simulation indicates the possibility of existence of unmelted solder bonds heated at peak temperature below a predetermined lower limit and solder bonds heated at temperature above a predetermined upper limit. On the basis of the result, the components that are likely to be heated at inapplicable temperature are redesigned so that they can actually be heated at temperature in the predetermined range. The modification of design is displayed.

    Method of and apparatus for forming volume type phase hologram
    59.
    发明授权
    Method of and apparatus for forming volume type phase hologram 失效
    用于形成体积型相位全息图的方法和装置

    公开(公告)号：US5231440A

    公开(公告)日：1993-07-27

    申请号：US906354

    申请日：1992-06-30

    申请人： Yasuo Yamagishi ,  Takeshi Ishitsuka ,  Motoaki Tani ,  Youko Kuramitsu

    发明人： Yasuo Yamagishi ,  Takeshi Ishitsuka ,  Motoaki Tani ,  Youko Kuramitsu

    IPC分类号： G03F7/00 ,  G03H1/18

    CPC分类号： G03H1/18 ,  G03F7/001 ,  G03H1/0248 ,  G03H2001/186 ,  G03H2260/12

    摘要： A method of and apparatus for forming a volume type phase hologram comprising the steps of, after exposure of a holographic material comprising a polymeric matrix having a radiation active substance associated therewith to an interference pattern of radiation, dipping the pattern-wise exposed holographic material in a swelling solution consisting of a first solvent which can act as a good solvent for the polymer of the matrix and a second solvent which can act as a poor solvent for the polymer and has a higher boiling point than that of the first solvent, and then pulling the swollen holographic material up from the swelling solution, whereby uniformly developed holograms having a large size and high qualities can be easily produced by a simple production process.

    摘要翻译： 一种用于形成体积型相位全息图的方法和装置，包括以下步骤：在将包含与其相关联的辐射活性物质的聚合物基质的全息材料曝光于辐射的干涉图案之后，将图案方式曝光的全息材料浸入 由可以作为基质聚合物的良溶剂的第一溶剂和可以作为聚合物不良溶剂并且沸点高于第一溶剂的第二溶剂组成的溶胀溶液，然后 从溶胀溶液中拉出膨胀的全息材料，由此可以通过简单的制造工艺容易地制造具有大尺寸和高质量的均匀显影的全息图。