光学系统中每个透镜都是透光孔，还有一些专门设置的光孔。光学系统中的光阑包括孔径光阑、视场光阑、渐晕光阑和消杂光光阑等。其中孔径光阑每个光学系统都有。
聚光镜的孔径光阑(Aperture Diaphragm)： 如所周知，人们只留意了显微镜的分辩率主要是取决于物镜的数值孔径，但从当年阿贝博士所提出的关于显微镜分辩率的计算icvjuth...
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In order to validating the approximate algorithm of Collins' formula, the diffraction images for a light wave that passes a thin lens from a quadrate aperture are simulated theoretically and compared with the experimental results.
为了验证柯林斯公式的一种近似计算方法，对光波通过方形孔径光阑及一薄透镜时的衍射图像进行理论计算，并与实验结果进行比较。
参考来源 - 衍射计算方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
第一至第四透镜从物体顺序排列，孔径光阑置于第一透镜的物侧上。
The first through fourth lenses are arranged sequentially from the object, and an aperture diaphragm is disposed on the object side of the first lens.
这不是星星自身的光环，而是由于望远镜的圆形孔径光阑以及光的物理特性造成的。
This is not the star's disk you are seeing but the effect of having a circular aperture in your telescope and due to the nature of light.
得到的孔径光阑限制下高斯光束的传输规律为高斯光束在自由空间光通信和光学超分辨中的应用提供了理论基础。
These propagation rules of Gaussian beam limited by the aperture could promote the applications of Gaussian beam in the optical communication and the optical super resolution.
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