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We have investigated the measurement of nonuniform electric field vector distributions in liquid dielectrics using the optical method based electrooptic Kerr effect. Our reconstruction technique of the electric field distribution has a merit that the strength and the direction of the electric field at each position can be known. But the method had a problem of a measurement time. So we developed a new optical system that could measure reconstruction data simultaneously from three directions. Using this system, we measured continuous electric field distributions.