Photoelectric near electric field scanner

The invention provides a photoelectric near electric field scanner, and relates to a system used for measuring magnetic variable and electrical variable, in particular to a three-dimensional photoelectric near electric field scanning device equipped with an upper optical fiber crystal probe and a lower optical fiber crystal probe. The photoelectric near electric field scanner comprises the near electric field scanning device, a power supply, a controller, a drive module, three stepping motors, three position sensors, a signal processing circuit, a 485 bus communication module, a host computer, a semiconductor laser and an optical loop, and can be used for scanning the near field intensities of the front and back side electric fields of a circuit board to be measured simultaneously, so as to avoid secondary interference and radiation on a component to be measured during scanning, and overcome the defects that in the prior art, space electromagnetic interference introduction, observation, recording and data analysis of an electric field detect system are complex, vibration generates during a moving process, the control mode is not flexible enough, and the measuring accuracy is low.