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    • 3. 发明授权
    • Optical device
    • 光学装置
    • US07315672B2
    • 2008-01-01
    • US10993172
    • 2004-11-22
    • Tomohiko KanieMakoto Katayama
    • Tomohiko KanieMakoto Katayama
    • G02B6/02G02B6/12
    • G02B6/3588G02B6/12007G02B6/266G02B6/3514G02B6/3532G02B6/3548G02B6/3566G02B6/3584G02B6/3594G02B6/3596
    • An optical variable attenuator 1 has a planar waveguide 2 and an actuator structure 3. The planar waveguide 2 is provided with an input optical waveguide core 4A for input of an optical signal, an output optical waveguide core 4B for outputting an optical signal from the optical waveguide core 4A, and an a movable mirror optical waveguide core 4C for guiding light that does not enter the optical waveguide core 4B, out of the optical signal from the optical waveguide core 4A. The actuator structure 3 has a movable mirror 7 for reflecting the optical signal emerging from the input optical waveguide core 4A, toward the output optical waveguide core 4B. A light receiving device 10 for receiving light passing the optical waveguide core 4C is provided at one end face of the planar waveguide 2.
    • 光学可变衰减器1具有平面波导2和致动器结构3.平面波导2设置有用于输入光信号的输入光波导芯411,用于输出光信号的输出光波导芯4B 光波导芯411和用于引导不进入光波导芯体4B的光的可移动镜光波导芯体4C,从光波导芯体4A的光信号中移除。致动器结构3具有 用于将从输入光波导芯411出射的光信号反射到输出光波导芯体B的可移动反射镜7.用于接收通过光波导芯体4C的光的光接收装置10设置在 平面波导2。
    • 4. 发明申请
    • Hermetic compressor
    • 气密压缩机
    • US20060257274A1
    • 2006-11-16
    • US10553847
    • 2005-05-11
    • Ikutomo UmeokaMakoto KatayamaJunichiro Yabiki
    • Ikutomo UmeokaMakoto KatayamaJunichiro Yabiki
    • F04B35/04
    • F04B39/023F04B39/0005
    • A hermetic compressor including a housing containing oil and a compression mechanism for compressing a refrigerant gas. In this configuration, a cylindrical piston has under cuts which do not communicate with at least a top surface at a cylinder side of the piston and are formed on an outer circumferential surface of the piston excluding a sliding surface existing in the axial direction of a piston pin and the perpendicular direction of the piston pin viewed from the axial direction of the piston, in which the under cuts communicate with space inside the housing in the vicinity of the bottom dead center. Since the sliding surface is provided in the direction parallel to and perpendicular to the axis, inclination of the piston in the vertical direction is suppressed and at the same time oil supply to the sliding portion through the under cuts is promoted. Therefore, the sealing property and lubricant property are improved, and thus high efficiency of the compressor can be realized.
    • 一种封闭式压缩机,包括容纳油的壳体和用于压缩制冷剂气体的压缩机构。 在这种构造中,圆柱形活塞具有在活塞的气缸侧的至少与顶表面不连通的底切口,并且形成在活塞的外周表面上,除了存在于活塞的轴向方向上的滑动面 销和从活塞的轴向方向观察的活塞销的垂直方向,其中下切口与下止点附近的壳体内的空间连通。 由于滑动面设置在与轴平行且垂直的方向上,因此能够抑制活塞在垂直方向上的倾斜,同时促进通过下切口对滑动部的供油。 因此,提高了密封性和润滑性,能够实现压缩机的高效率化。
    • 5. 发明授权
    • Variable optical attenuator
    • 可变光衰减器
    • US06907181B2
    • 2005-06-14
    • US09993410
    • 2001-11-26
    • Makoto KatayamaMasayuki Nishimura
    • Makoto KatayamaMasayuki Nishimura
    • G02B26/02G02B6/12G02B6/26G02B6/35G02F1/01G02B6/10
    • G02B6/353G02B6/266G02B6/357G02B6/3594G02B6/3596
    • A small optical device which has low power consumption and which is excellent for integration, and which has a variable optical attenuation function which features proper polarization dependence over the entire wide variable optical attenuation range is provided. In the optical device, an optical circuit including a core and a cladding that covers the core is formed on a substrate. An optical element is movably disposed inside a groove provided in the substrate so as to traverse the core, and includes a plurality of optical attenuation elements having different light attenuation amounts. By moving the optical element by an actuation function portion provided on the optical circuit, the attenuation amount of signal light that propagates through the optical circuit is changed.
    • 提供具有低功耗并且非常适合集成的小型光学装置,并且具有在整个宽可变光衰减范围内具有适当偏振依赖性的可变光衰减功能。 在光学装置中,在基板上形成包括芯和覆盖芯的包层的光电路。 光学元件可移动地设置在设置在基板中的凹槽内,以便穿过芯,并且包括具有不同光衰减量的多个光衰减元件。 通过由设在光电路上的致动功能部分移动光学元件,改变通过光电路传播的信号光的衰减量。
    • 9. 发明授权
    • Variable dispersion compensator and optical transmission system
    • 可变色散补偿器和光传输系统
    • US06659614B2
    • 2003-12-09
    • US10114322
    • 2002-04-03
    • Makoto KatayamaTomohiko KanieMasayuki NishimuraShunichi Tsuchiya
    • Makoto KatayamaTomohiko KanieMasayuki NishimuraShunichi Tsuchiya
    • G02B508
    • H04B10/25133H04B2210/258
    • An optical signal, which is to become the subject of dispersion compensation, is split by optical combining/splitting unit 2, and each frequency component of the optical signal that is split is reflected by each reflective surface of reflective mirror 40 of reflective means 4 to apply a predetermined phase shift to the respective frequency components. Each reflected frequency component is then combined using optical combining/splitting unit 2, to give dispersion compensated optical signal. Furthermore, in regards to reflective means 4, which is used to apply phase shift to each frequency component of an optical signal, reflective mirror 40 is made a variable movable mirror by reflection position at each reflective surface, which reflects the frequency components, deforming the entire reflective surface. This allows dispersion that is created in an optical signal to be compensated with favorable controllability and high accuracy. As a result, it becomes possible to provide a variable dispersion compensator that presents high precision and controllability of dispersion compensation, and has a miniaturized optical circuit, and an optical transmission system comprising such variable dispersion compensator.
    • 要成为色散补偿对象的光信号被光学合成/分离单元2分离,被分离的光信号的每个频率分量被反射装置4的反射镜40的每个反射表面反射到 对各个频率分量施加预定的相移。 然后使用光学合成/分离单元2将每个反射频率分量组合,以产生色散补偿光信号。 此外,关于用于向光信号的每个频率分量施加相移的反射装置4,通过反射位置在每个反射表面处将反射镜40制成可变可移动反射镜,其反映频率分量,使 整个反光面。 这允许以良好的可控性和高精度补偿在光信号中产生的色散。 结果,可以提供具有高精度和色散补偿的可控性的可变色散补偿器,并且具有小型化的光电路和包括这种可变色散补偿器的光传输系统。