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提出一种能够同时测量面内全场位移的电子散斑测量光路结构，解决了面内全场位移在瞬态和不可重复情况下无法测量的问题。将激光束分成四路照明光，分别安排在水平和垂直平面内，利用激光器的偏振特性安排光路，使水平平面内两束光的偏振方向相同，垂直平面内两束光的偏振方向相同，但这两个平面中的偏振方向又互相垂直。对转动圆盘内位移测量，取得了满意的结果，用一幅散斑图同时得到了表示水平和垂直分量的散斑条纹
An electronic speckle measuring optical path structure capable of simultaneously measuring the total in-plane displacement is proposed, which solves the problem that in-plane total field displacement can not be measured under transient and non-repeatable conditions. The laser beam is divided into four illumination lights and arranged in horizontal and vertical planes respectively. The light path is arranged by utilizing the polarization characteristics of the laser so that the polarization directions of the two beams in the horizontal plane are the same, but the polarization directions of the two beams in the vertical plane are the same, The polarizations in these two planes are again perpendicular to each other. Satisfactory results have been obtained for the displacement measurement in a rotating disc, and speckle streaks representing horizontal and vertical components are obtained simultaneously with a speckle map