scanning spot beam 中文意思是什麼
scanning spot beam
解釋
掃描束-
In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam
同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸，測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強，實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小，且分佈近似貝塞爾分佈，符合無衍射光束的特性;經過聚焦后，呈現三維分佈中空的光束bottlebeam ，實驗結果與理論分析基本吻合。 -
An electron beam, forming a scanning spot on the signal plate, zigzags its way, line by line, across the plate.
在信號板上形成掃描點的電子束，逐條地曲折掃過信號板。 -
( 3 ) the direct slicing data are processed in order to accurately extract and reconstruct the data information of the 2d contours. based on it, the radius compensation of laser beam spot, the filling contours and the optimization of the scanning paths are all implemented
（ 3 ）通過對直接分層輪廓進行處理，實現了層片輪廓數據的提取、層片輪廓的重建、激光光斑的補償，以及層片輪廓的填充和掃描路徑的優化。
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