beam aperture

基本解釋

Utilizing convergent beam of large aperture can realize inversion of circular hole diffraction and circular disk diffraction.
利用這種光束可以對(duì)微小的衍射物體進(jìn)行反演放大。
The propagation property in the far field of the Guassian beam through an aperture is studied in detail by simulation method according the Fresnel-Kirchhoff formula.
根據(jù)菲涅耳-基爾霍夫衍射積分公式，采用數(shù)值方法，詳細(xì)研究了高斯光束經(jīng)圓形孔徑后的遠(yuǎn)場(chǎng)傳輸特性。
We must design the ratio of the source beam size and aperture of object lens reasonably to assure energy matching ratio (EMR) and to achieve smaller size of focus point and reasonable focus depth.
必須合理地確定光源的光束口徑與光盤物鏡孔徑比值，才能保證其光能量耦合效率，并獲得較小的光斑尺寸和合理的焦深。