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    • 2. 发明专利
    • Thick slab lens, its manufacturing method, and optical wave coupling device using the thick slab lens
    • 厚板镜片,其制造方法和光学耦合器件使用厚度均匀的镜片
    • JP2005221514A
    • 2005-08-18
    • JP2002060849
    • 2002-03-06
    • Hoya CorpHoya株式会社Kazuo Shiraishi和男 白石
    • SHIRAISHI KAZUO
    • G02B3/00G02B6/36G02B6/42H01S5/022
    • G02B6/425
    • PROBLEM TO BE SOLVED: To provide a thick slab lens suitable for mass production, by being integrated in between a semiconductor laser array and an optical fiber array or the waveguide array of an optical integrated circuit, and to provide its manufacturing method.
      SOLUTION: The thick slab lens 2 has the shape of a thick film, has a large specific refractive index difference which does not exceed several tens of percent, and has substantially a quarter of the cycle for meandering of a light beam by the length in the light propagating direction or odd multiples thereof. Thereby the light intensity distribution of a semiconductor laser or the like, having a small spot size in only one direction, can be directly converted into a substantially circular light intensity distribution which does not exceed the spot size of a standard optical fiber and a light source and a waveguide can be integrated. The structure is small in size and lightweight, and is simple to manufacture and can be mass-produced.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:通过集成在半导体激光器阵列和光纤阵列或光学集成电路的波导阵列之间来提供适合于批量生产的厚板坯透镜,并提供其制造方法。 解决方案:厚板状透镜2具有厚膜的形状,具有不超过几十%的大的比折射率差,并且具有基本上四分之一的光束弯曲周期 光传播方向的长度或其奇数倍。 由此,可以将仅具有一个方向的小斑点尺寸的半导体激光器等的光强度分布直接转换为基本上不会超过标准光纤和光源的光斑尺寸的圆形光强度分布 并且可以集成波导。 结构尺寸小,重量轻,制造简单,可批量生产。 版权所有(C)2005,JPO&NCIPI
    • 3. 发明申请
    • Process For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid
    • 生产不饱和醛和/或不饱和羧酸的方法
    • US20130310604A1
    • 2013-11-21
    • US13982808
    • 2012-01-16
    • Tatsuhiko KurakamiSusumu MatsumotoAtsushi SudoKazuo ShiraishiMasashi Hashiba
    • Tatsuhiko KurakamiSusumu MatsumotoAtsushi SudoKazuo ShiraishiMasashi Hashiba
    • C07C51/25C07C45/38C07C51/235C07C45/35
    • C07C51/235C07C45/35C07C45/38C07C51/252C07C47/22C07C57/04
    • There is provided a process for producing aerolein, acrylic acid, methacrolein, methacrylic acid in a safe and steady manner and in high yields, which avoids a phenomenon of occurrence of an abnormal reaction attributable to the fact that the temperature at a raw material gas outlet side becomes considerably higher than the temperature at a raw material gas inlet side, with regard to the temperature of a catalyst packed in a reaction tube at vapor-phase catalytic oxidation of propylene, isobutylene, or the like.In the process of using a reaction tube on which a plurality of catalyst layers formed in a raw material gas flow direction, a catalyst and a catalyst packing schedule are designed so that a relation between the raw material conversion rate at which the yield of the objective product becomes maximum and the raw material conversion rate at which a high and low correlation between maximum temperature of the catalyst layer present closest to a reaction gas inlet side Zin and maximum temperature of the catalyst layer present closest to a reaction gas outlet side Zout is reversed satisfies a specific condition of 0.5≦Cmax−Ccrs≦5, in which Cmax: a raw material conversion rate at which yield of the objective products becomes maximum; and Ccrs: a raw material conversion rate at which, when maximum temperature of the catalyst layer Zin is regarded as Tin, maximum temperature of the catalyst layer Zout is regarded as Tout, and the raw material conversion rate is changed, a high and low correlation between Tin and Tout is reversed.
    • 提供了以安全稳定的方式和高产率生产气溶胶,丙烯酸,甲基丙烯醛,甲基丙烯酸的方法,避免了由于原料气体出口处的温度导致的异常反应的发生现象 相对于在丙烯,异丁烯等的气相催化氧化反应管中填充的催化剂的温度,原料气体入口侧的温度显着高于原料气体入口侧的温度。 在使用在原料气体流动方向上形成有多个催化剂层的反应管的过程中,设计催化剂和催化剂填充进度,使得目的物的产率的原料转化率之间的关系 产物变得最大,并且最接近反应气体入口侧的催化剂层的最高温度和最接近反应气体出口侧的催化剂层的最高温度之间的高低相关性的原料转化率反转 满足0.5 @ Cmax-Ccrs @ 5的特定条件,其中Cmax:目标产物的产率变为最大的原料转化率; Ccrs:将催化剂层Zin的最高温度设为Tin时的原料转化率,将催化剂层Zout的最高温度设为Tout,将原料转化率变更为高,低相关 Tin和Tout之间是相反的。
    • 8. 发明授权
    • Optical fiber having a lens formed at an end thereof
    • 具有在其端部形成的透镜的光纤
    • US5446816A
    • 1995-08-29
    • US283959
    • 1994-08-01
    • Kazuo ShiraishiKazuhito MatsumuraIsamu OishiKatsuo Ebine
    • Kazuo ShiraishiKazuhito MatsumuraIsamu OishiKatsuo Ebine
    • G02B6/02G02B6/255G02B6/32G02B6/42
    • G02B6/322G02B6/2552G02B6/4203
    • An optical fiber having a lens formed at an end thereof comprises a fiber body including a core and a cladding, and an incident light guide portion having a uniform refractive index and integrally formed at an end portion of the fiber body, wherein the incident light guide portion has a convex surface, and the core has a distal end located within the incident light guide portion at a position close to a focal point of the incident light guide portion. When the incident light guide portion is arranged in alignment with a light source such that an extremity of the convex surface of the incident light guide portion faces a light-emitting surface of the light source, assuming that an X-Y coordinate system is established wherein the X axis coincides with the optical axis of the fiber body and the Y axis coincides with a radius direction of the fiber body, the relationship expressed by the following equation is fulfilled: ##EQU1## where coordinates of the extremity of the convex surface of the incident light guide portion are (0, 0), coordinates of the light-emitting surface of the light source are (-k, 0), coordinates of the distal end of the core are (L, 0), coordinates of an incident point at which light from the light-emitting surface of the light source falls upon the convex surface of the incident light guide portion are (z, r), and the refractive index of the incident light guide portion is n. Accordingly, no phase difference of laser beams occurs when the optical fiber is connected to a semiconductor laser, making it possible to provide a high coupling efficiency optical fiber.
    • 具有在其端部形成的透镜的光纤包括具有芯和包层的纤维体和具有均匀折射率并且一体地形成在纤维体的端部的入射光导部,其中入射光导 所述芯具有位于所述入射光导部内的远端,所述远端位于所述入射光导部的焦点附近的位置。 当入射光导部分与光源对准地布置,使得入射光导部分的凸表面的末端面向光源的发光表面时,假设建立XY坐标系,其中X 轴与光纤体的光轴重合,Y轴与纤维体的半径方向一致,满足下式所表示的关系:入射光的凸面的末端的坐标 引导部分为(0,0),光源的发光面的坐标为(-k,0),芯的前端的坐标为(L,0),入射点的坐标为 来自入射光导部的凸面的光源的发光面的光为(z,r),入射导光部的折射率为n。 因此,当光纤连接到半导体激光器时,不会发生激光束的相位差,使得可以提供高耦合效率的光纤。