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31. 发明授权

US5477134A Voltage sensor for use in optical power transformer including a pair of Pockels cells 失效
标题翻译：用于光功率变压器的电压传感器，包括一对Pockels电池
公开(公告)号：US5477134A
公开(公告)日：1995-12-19
申请号：US152234
申请日：1993-11-16
申请人： Hidenobu Hamada
发明人： Hidenobu Hamada
IPC分类号： G01R15/24 , G01R31/00
CPC分类号： G01R15/242
摘要： A voltage sensor is composed by arranging along the optic axis, successively from the side of incident light, a first polarizer, a Pockels cell for detection, a Pockels cell for modulation, and a second polarizer wherein an electric field proportional to a voltage to be measured is applied to the Pockels cell for detection, and a periodic electric field for modulation that varies the phase difference by 2n.pi. radians, where n is a positive integer, during each period and that has a frequency higher than the electric field applied to the Pockels cell for detection is applied to the Pockels cell for modulation, and the voltage to be measured is determined based on a phase change in the intensity of the light output from the second polarizer.
摘要翻译：电压传感器通过从入射光侧依次配置光轴，第一偏振器，用于检测的Pockels单元，用于调制的Pockels单元和第二偏振器构成，其中与电压成比例的电场测量应用于普克尔斯单元进行检测，以及用于调制的周期性电场，其在每个周期期间将相位差改变2n pi个弧度，其中n是正整数，并且具有高于施加到用于检测的普克尔斯单元被应用于普克尔斯单元进行调制，并且基于从第二偏振器输出的光的强度的相位变化来确定要测量的电压。

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