beam aperture

基本解释

Utilizing convergent beam of large aperture can realize inversion of circular hole diffraction and circular disk diffraction.
利用这种光束可以对微小的衍射物体进行反演放大。
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.
根据菲涅耳-基尔霍夫衍射积分公式，采用数值方法，详细研究了高斯光束经圆形孔径后的远场传输特性。
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.
必须合理地确定光源的光束口径与光盘物镜孔径比值，才能保证其光能量耦合效率，并获得较小的光斑尺寸和合理的焦深。