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95 条记录 (耗时 0.014 秒)

    OPTICAL ISOLATOR
    31.
    发明授权
    OPTICAL ISOLATOR 失效
    光学隔离器

    公开(公告)号：EP0485609B1

    公开(公告)日：1996-01-31

    申请号：EP90916383.4

    申请日：1990-11-13

    申请人： NAMIKI PRECISION JEWEL CO., LTD.

    发明人： KUME, Hiroshi ,  KONNO, Yoshihiro

    IPC分类号： G02B27/28 ,  G02F1/09

    CPC分类号： G02F1/093 ,  G02B27/28 ,  G02F1/0147 ,  Y10S372/703

    摘要： An optical isolator comprising a polarizer, an analyzer, a Faraday rotor and a permanent magnet for magnetizing the Faraday rotor and inducing a Faraday effect. Degradation of isolation characteristics occurs near a critical temperature (0 °C or 70 °C) of a practical temperature range of from about 0 to 70 °C if adjustment and assembly are made in such a manner that maximum isolation is accomplished at the ambient temperature and for the wavelength used for the assembly. Therefore, the temperature position of maximum isolation is controlled by assembling the isolator at room temperature and for a wavelength which is shifted by a very small wavelength Δμ from the wavelength μ used so that maximum isolation can be obtained at an arbitrary use temperature by utilizing temperature dependence of the Faraday rotor.

    摘要翻译： 一种光学隔离器，包括偏振器，分析器，法拉第转子和永磁体，用于磁化法拉第转子并引起法拉第效应。 如果以在环境温度下完成最大隔离的方式进行调整和组装，则在约0至70℃的实际温度范围的临界温度（0℃或70℃）附近发生隔离特性的降解 以及用于组装的波长。 因此，通过在室温下组装隔离器来控制最大隔离的温度位置，并且对于从所使用的波长μ偏移非常小的波长Δμ的波长来控制最大隔离的温度位置，以便通过利用温度在任意使用温度下获得最大隔离 法拉第转子的依赖性。

    Polarization independent optical isolator
    32.
    发明公开
    Polarization independent optical isolator 失效
    Polarisationsunabhängigeroptischer隔离器。

    公开(公告)号：EP0665452A1

    公开(公告)日：1995-08-02

    申请号：EP95101148.5

    申请日：1995-01-27

    申请人： NAMIKI PRECISION JEWEL CO., LTD.

    发明人： Konno,Yoshihiro, c/o Namiki Prec.Jewel Co.Ltd. ,  Aoki,Shigeaki, c/o Namiki Prec.Jewel Co.Ltd. ,  Ikegai,Kazuaki, c/o Namiki Prec.Jewel Co.Ltd.

    IPC分类号： G02B6/26 ,  G02F1/09

    CPC分类号： G02B6/2746 ,  G02B5/3083 ,  G02B6/272 ,  G02B6/2766 ,  G02F1/093 ,  G02F2203/06

    摘要： A polarization-independent optical isolator having a structure in which polarization dispersion is virtually eliminated by selecting the thickness and optical axis orientations of birefringent crystalline plates used in the isolator is disclosed. The optical isolator of the present invention employs a combination of birefringent crystalline plates wherein the optical axis orientation of at least one birefringent crystalline plate in the optical isolator is different from the optical axis orientation of the remaining birefringent crystalline plates, and the polarization mode dispersion, which is induced when the beam propagates through the birefringent crystalline plate having a different optical axis orientation, is equal to the dispersion rate of the polarization mode dispersion attributable to the remaining birefringent crystalline plates and in a mutually inverse direction.

    摘要翻译： 公开了一种偏振无关的光隔离器，其具有通过选择隔离器中使用的双折射晶体板的厚度和光轴取向来实际消除偏振色散的结构。 本发明的光隔离器采用双折射结晶板的组合，其中光隔离器中的至少一个双折射晶体板的光轴取向与剩余双折射晶体板的光轴取向不同，并且偏振模色散， 当光束传播通过具有不同光轴取向的双折射晶体板时感应的等于由剩余的双折射结晶板引起的偏振模色散的色散速率和相反的方向。

    PROCESS FOR PRODUCING PERMANENT MAGNETS
    35.
    发明公开
    PROCESS FOR PRODUCING PERMANENT MAGNETS 失效
    VERFAHREN ZUR HERSTELLUNG VON DAUERMAGNETEN。

    公开(公告)号：EP0289599A1

    公开(公告)日：1988-11-09

    申请号：EP86904351.3

    申请日：1986-06-27

    申请人： NAMIKI PRECISION JEWEL CO., LTD.

    发明人： IMAIZUMI, Nobuo

    IPC分类号： H01F1/08 ,  H01F41/02

    CPC分类号： B22F3/24 ,  C22C1/0441 ,  H01F1/0577 ,  H01F41/026

    摘要： A process for heat-treating of rare earth permanent magnets chiefly of the Nd-Fe-B system. In the permanent magnet easily oxidized in the open air, an alloy thereof is pulverized, orientated compression-molded in a magnetic field or compression-molded in a non-magnetic field, and sintered at 900° to 1200°C, then ground and polished into a practical shape, subjected to solution heat treatment at 900° to 1200°C in an atmosphere of oxygen and/or nitrogen, or aged at 300° to 900 °C, so that an oxide and/or a nitride film of 0.001 to 10 µm in thickness is formed on the surface of the magnet in order to prevent the oxidation and to remove work strain.

    摘要翻译： 用于制造改进的永磁体的该方法包括以下步骤（1）将永磁体合金粉碎。 合金由R（T，M）z表示，其中R是稀土金属或多于一种稀土金属的混合物，T是主要由Fe和Co组成的过渡金属的混合物。M是混合物 的主要成分为B，z = 4-9的类金属元素。 （2）粉碎产物在磁场中进行取向压缩成型或在非磁场中压缩成型，然后（3）在900〜1200℃烧结，（4）将产物研磨， 抛光成合适的形状（5），然后在10至10乇（01）-1乇氧气和/或氮气的压力下，在900至1200℃下进行固溶热处理。 （6），然后在300〜900℃老化。 方法（4）和（5）可以交换。 作为这些方法的结果，在磁体的表面上形成厚度为0.001-0.1微米的氧化物和/或氮化物膜。

    PROCESS FOR PRODUCING PERMANENT MAGNET ALLOY
    37.
    发明公开
    PROCESS FOR PRODUCING PERMANENT MAGNET ALLOY 失效
    一种用于生产永磁合金。

    公开(公告)号：EP0029071A1

    公开(公告)日：1981-05-27

    申请号：EP80900442.7

    申请日：1980-02-29

    申请人： NAMIKI PRECISION JEWEL CO., LTD.

    发明人： IMAIZUMI, Nobuo ,  AOE, Masahiro

    IPC分类号： C22F1/10 ,  C22C1/04 ,  H01F1/08

    CPC分类号： H01F1/0557 ,  C22F1/10

    摘要： A process for producing a permanent magnet alloy of R 2 Co 17 series among rare earth element (R)-Cobalt(Co) intermetallic compounds. As to R 2 Co 17 intermetallic compounds having stoichiometric composition Sm 2 Co 17 , wherein R in R 2 Co 17 is samarium (Sm), has not as yet made available a coercive force in spite of the possibility of a high energy product due to its high saturation magnetization and high Curie temperature. Permanent magnetization of such compound has therefore hardly been ac- comptished. This invention enables the permanet magnetization of R 2 (Co, Fe, M) 17 (wherein M represents one, two or more elements of Ti, Cr, Ni, Cu, Zr, Nb, Hf, Ta, and W) by subjecting the sintered product thereof to artificial aging at 700-800°C for 0.5-200 hours in a magnetic field in the heat treatment step, thus increasing the coercive force.

    DIAMOND CRYSTAL POLISHING METHOD AND DIAMOND CRYSTAL
    38.
    发明公开
    DIAMOND CRYSTAL POLISHING METHOD AND DIAMOND CRYSTAL 审中-公开

    公开(公告)号：EP3766634A1

    公开(公告)日：2021-01-20

    申请号：EP19768491.3

    申请日：2019-03-14

    申请人： Adamant Namiki Precision Jewel Co., Ltd.

    发明人： KIM Seongwoo ,  FUJII Daiki ,  OYAMA Koki ,  KOYAMA Koji

    IPC分类号： B24B1/00 ,  B24B7/22 ,  B24B37/10 ,  C01B32/28 ,  C30B29/04 ,  C30B33/00 ,  H01L21/304

    摘要： To provide: a method for polishing a diamond crystal such that the method eliminates affected regions including dislocations from the main surface of the diamond crystal; and a diamond crystal with the affected regions removed from the main surface. A diamond crystal having a main surface having a plane orientation of (100) is prepared. Next, mechanical polishing is performed on the main surface of the diamond crystal. A tangent contacts a curve that extends in a rotation direction in which the polishing wheel is rotating and that contacts a contact position at which the diamond crystal contacts the polishing wheel that is rotating. A tangent direction of the tangent at the contact position is within a range of ±10° (degrees) relative to a direction of the diamond crystal. By this mechanical polishing, an affected region is caused to appear such that the affected region is parallel to a direction of a plane orientation (111) of the diamond crystal and penetrates the diamond crystal onto the main surface. Next, chemical mechanical polishing is performed on the main surface of the diamond crystal to remove the affected region parallel to the direction of the plane orientation (111), thereby removing the affected region from the main surface.

    POWER GENERATION MECHANISM AND POWER GENERATION METHOD
    39.
    发明公开
    POWER GENERATION MECHANISM AND POWER GENERATION METHOD 审中-公开

    公开(公告)号：EP3604804A1

    公开(公告)日：2020-02-05

    申请号：EP18774328.1

    申请日：2018-03-27

    申请人： Adamant Namiki Precision Jewel Co., Ltd.

    发明人： AOYAGI Tomohide

    IPC分类号： F03G1/06 ,  F03G1/00 ,  F03G5/06

    摘要： To provide a power generation mechanism that generates a constant amount of power, no matter how low the speed of force application is, ensuring a reliable switching operation; and to provide a method for generating power that generates a constant amount of power, no matter how low the speed of force application is, ensuring a reliable switching operation. The power generation mechanism includes, at least, a first movable member, a second movable member, a twisted coil spring, a power generator, and a housing. The first movable member and the second movable member are gears. A first wound part and a second wound part of the twisted coil spring are wound around a first center shaft in opposite directions. Initial elastic energy ie1 is applied to the first wound part, and initial elastic energy ie2 is applied to the second wound part. Absolute values of ie2 and ie1 are set to be equal to each other. The second movable member is turnable by a force from outside the power generation mechanism, bringing a tooth of the first movable member and a tooth of the second movable member into engagement with each other so that the first movable member is turned. With elastic energy ie12 accumulating on the first wound part, and with the tooth of the first movable member and the tooth of the second movable member disengaged from each other, the first center shaft is turned in an opposite direction by ie12 to generate power in the power generator. Also, the first center shaft is turned by ie1 and ie2 .