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热词
    • 5. 发明授权
    • Voltage detector
    • 电压检测器
    • US4922186A
    • 1990-05-01
    • US240641
    • 1988-09-06
    • Yutaka TsuchiyaShinichiro AoshimaTakuya Nakamura
    • Yutaka TsuchiyaShinichiro AoshimaTakuya Nakamura
    • G01R15/24G01R1/07G01R13/40G01R19/00
    • G01R1/071
    • A voltage detector comprises a pulse light source, a delay means, a dispersing prism made of an electro-optic material and a linear image sensor. The electro-optic material senses a voltage developing in a selected area of an object as a change of its refractive index. An optical path of a pulse light is changed by the dispersing prism according to the change of its refractive index. An output pulse light emerging from the dispersing prism is detected by a linear image sensor. A waveform of the periodic voltage pulses can be detected by gradually delaying a phase of the pulse light emitted from the light source. The voltage developing in one-dimensional positions in the object can be also detected by employing a dispersing prism extending along the positions to be detected and a two-dimensional detector.
    • 电压检测器包括脉冲光源,延迟装置,由电光材料制成的分散棱镜和线性图像传感器。 电光材料感测在物体的选定区域中显影的电压作为其折射率的变化。 根据其折射率的变化,通过分散棱镜改变脉冲光的光路。 通过线性图像传感器检测从分散棱镜出射的输出脉冲光。 可以通过逐渐延迟从光源发射的脉冲光的相位来检测周期性电压脉冲的波形。 通过采用沿着待检测的位置延伸的分散棱镜和二维检测器也可以检测在物体中一维位置显影的电压。