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    • 45. 发明授权
    • Voltage detection apparatus
    • 电压检测装置
    • US5583444A
    • 1996-12-10
    • US618406
    • 1996-03-19
    • Takuya NakamuraIsuke HiranoShinichiro AoshimaHironori TakahashiTsuneyuki Urakami
    • Takuya NakamuraIsuke HiranoShinichiro AoshimaHironori TakahashiTsuneyuki Urakami
    • G01R19/00G01R1/07G01R15/16G01R15/22G01R31/28G01R31/312G01R31/302
    • G01R1/071G01R31/312G01R15/22G01R15/241
    • This invention has as its object to provide a voltage measurement apparatus which has a compact probe unit, and which can perform a measurement in a non-contact manner. The voltage measurement apparatus includes detection means for detecting an electric field generated in a space by a voltage applied to the surface of a device to be measured, light-emitting means for modulating output light by superposing a detected signal obtained from the detection means on a bias current which is supplied to inductively radiate the output light, a constant current source for supplying the bias current to the light-emitting means, extraction means for extracting a signal component of the output light from the light-emitting means, and light-transmission means for guiding the output light from the light-emitting means to the extraction means, and measures the applied voltage to the surface of the device to be measured by bringing the detection means close to the device to be measured in a non-contact manner.
    • 本发明的目的是提供一种电压测量装置,其具有紧凑的探针单元,并且可以以非接触方式进行测量。 电压测量装置包括检测装置,用于通过施加到被测量装置的表面的电压来检测在空间中产生的电场;发光装置,用于通过将从检测装置获得的检测信号叠加在一个 提供用于感应放射输出光的偏置电流,用于向发光装置提供偏置电流的恒流源,用于从发光装置提取输出光的信号分量的提取装置,以及光传输 用于将来自发光装置的输出光引导到提取装置的装置,并且通过以非接触的方式使检测装置靠近被测量装置来测量施加到要测量装置的表面的电压。
    • 46. 发明授权
    • Voltage detection apparatus
    • 电压检测装置
    • US5703491A
    • 1997-12-30
    • US703768
    • 1996-08-27
    • Takuya NakamuraIsuke HiranoShinichiro AoshimaHironori TakahashiTsuneyuki Urakami
    • Takuya NakamuraIsuke HiranoShinichiro AoshimaHironori TakahashiTsuneyuki Urakami
    • G01R19/00G01R1/07G01R15/16G01R15/22G01R31/28G01R31/312G01R31/032
    • G01R1/071G01R31/312G01R15/22G01R15/241
    • This invention has as its object to provide a voltage measurement apparatus which has a compact probe unit, and which can perform a measurement in a non-contact manner. The voltage measurement apparatus includes detection means for detecting an electric field generated in a space by a voltage applied to the surface of a device to be measured, light-emitting means for modulating output light by superposing a detected signal obtained from the detection means on a bias current which is supplied to inductively radiate the output light, a constant current source for supplying the bias current to the light-emitting means, extraction means for extracting a signal component of the output light from the light-emitting means, and light-transmission means for guiding the output light from the light-emitting means to the extraction means, and measures the applied voltage to the surface of the device to be measured by bringing the detection means close to the device to be measured in a non-contact manner.
    • 本发明的目的是提供一种电压测量装置,其具有紧凑的探针单元,并且可以以非接触方式进行测量。 电压测量装置包括检测装置,用于通过施加到被测量装置的表面的电压来检测在空间中产生的电场;发光装置,用于通过将从检测装置获得的检测信号叠加在一个 提供用于感应放射输出光的偏置电流,用于向发光装置提供偏置电流的恒流源,用于从发光装置提取输出光的信号分量的提取装置,以及光传输 用于将来自发光装置的输出光引导到提取装置的装置,并且通过以非接触的方式使检测装置靠近被测量装置来测量施加到要测量装置的表面的电压。
    • 48. 发明申请
    • LASER BEAM WORKING MACHINE
    • 激光束工作机
    • US20110274128A1
    • 2011-11-10
    • US13143604
    • 2009-12-04
    • Kenshi FukumitsuShingo OishiShinichiro Aoshima
    • Kenshi FukumitsuShingo OishiShinichiro Aoshima
    • H01S3/02
    • B23K26/0736B23K26/0617B23K26/0738B23K26/08B23K26/53
    • A cylindrical lens (4) diverges a laser beam (L1) in the Y-axis direction (i.e., within the YZ plane) but neither diverges nor converges it in the X-axis direction (i.e., within the ZX plane). An objective lens (5) converges the laser beam (L1) emitted from the cylindrical lens (4) into a point P1 in the Y-axis direction and into a point P2 in the X-axis direction. As a consequence, the cross section of the laser beam (L1) becomes elongated forms extending in the X- and Y-axis directions at the points P1, P2, respectively. Therefore, when the points P1, P2 are located on the outside and inside of the work (S), respectively, an elongated working area extending in the Y-axis direction can be formed in a portion where the point P2 is positioned within the work (S).
    • 柱面透镜(4)在Y轴方向(即,在YZ平面内)分散激光束(L1),但是在X轴方向(即,ZX平面内)中也不会发散或会聚。 物镜(5)将从柱面透镜(4)射出的激光束(L1)向Y轴方向的点P1会聚,并将X轴方向的点P2会聚。 因此,激光束(L1)的横截面分别成为在点P1,P2处沿X轴方向和Y轴方向延伸的细长形状。 因此,当点P1,P2分别位于工件(S)的外侧和内部时,可以在点P2位于工件(S)内的部分中形成沿Y轴方向延伸的细长工作区域 (S)。
    • 50. 发明授权
    • Wavelength variable laser device
    • 波长可变激光器件
    • US5357532A
    • 1994-10-18
    • US15436
    • 1993-02-09
    • Shinichiro AoshimaHaruyasu Ito
    • Shinichiro AoshimaHaruyasu Ito
    • H01S5/06H01S3/082H01S3/105H01S3/10
    • H01S3/105H01S3/082
    • To provide a wavelength tunable laser device having a wavelength variable range of a broad band, and capable of simply changing the output wavelength. Excitation means 1 excites a laser medium 2a in a main resonator 2. The main resonator 2 is provided with two resonator mirrors 2b and an optical input/output port 2c in addition to the laser medium 2a. By the excitation means 1 and the main resonator 2, laser oscillation can be produced. A sub-resonator 3 is provided with wavelength selection means 3a and optical feedback means 3b. And, the sub-resonater selects a desired wavelength of the laser beam outputted from said main resonator and returns the laser beam of the desired wavelength back to said laser medium. In a device comprising the excitation means 1, the main resonator 2 and the sub-resonator 3, an optical output port 4 is provided. Since this wavelength tunable laser device has no necessity of providing wavelength selection means within the main resonator, laser oscillation is easily produced. Accordingly, even in the case where the gain of the laser medium is small, or the excitation energy is small, oscillation can be produced. In addition, since the main resonator can be placed in an oscillating state at all times, the wavelength tunable laser device can be prevented from being stopped.
    • 提供具有宽带的波长可变范围的波长可调激光器件,并能够简单地改变输出波长。 励磁装置1激励主谐振器2中的激光介质2a。除了激光介质2a之外,主谐振器2还设置有两个谐振镜2b和光输入/输出端口2c。 通过激励装置1和主谐振器2,可以产生激光振荡。 副谐振器3设置有波长选择装置3a和光反馈装置3b。 并且,副谐振器选择从所述主谐振器输出的激光束的期望波长,并将期望波长的激光束返回到所述激光介质。 在包括激励装置1,主谐振器2和副谐振器3的装置中,设置有光输出端口4。 由于该波长可调激光器件不需要在主谐振器内提供波长选择装置,因此容易产生激光振荡。 因此,即使在激光介质的增益小或激发能小的情况下,也能产生振荡。 此外,由于主谐振器可以一直处于振荡状态,因此可以防止波长可调激光器件停止。