衍射极限(瑞利判据)。
现在问题变成：这个是不是衍射极限的作用？
The obvious question becomes: is this diffraction limited or not?
近年来，人们发现一种可以突破衍射极限的新思路。
In recent years, a new idea is found to be beating the diffraction limit.
反过来，又引出一个新的问题，衍射极限的视角到底有多大？
This in turn leads up to asking the question of exactly how large is the diffraction limited field of view.
结果表明：利用优化的离轴硬边非稳腔可以得到近衍射极限的输出。
It is shown that near diffraction-limited beam qualities could be achieved with optimized off-axis hard-edge unstable resonators.
表明了具有衍射极限的模式建立时间受放大率、腔长以及饱和效应的影响。
The results of the experiment indicated that the set up time of the diffraction limited mode in the resonator is influenced by magnification, cavity length and the gain saturation effect of the laser.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
成像研究表明该装置可对近场衰逝分量进行有效探测并实现了超衍射极限成像。
This research shows that the RSNOM could detect the evanescent near field wave effectively, and the image with a super diffraction limit resolution was obtained.
利用衍射光学的技术与器件，能够突破受限于衍射极限的分辨率，实现光学超分辨。
With the techniques and elements of diffractive optics, it is now feasible to break the diffraction limit and achieve optical superresolution.
但细菌的大小和衍射极限差不多，所以在显微镜中，一个细菌是个分不清的小团儿。
But a bacterium is about the size of the diffraction limit, and could be seen only as a blob.
空间激光通信中发射波面质量接近衍射极限，测量波面是调整和检验发射系统的依据。
Laser transmitting wavefront is near diffraction-limited in space laser communication. Wavefront measurement is the basis of system adjustment and testing.
像质评价分析结果表明，所设计的镜头像质优良，轴上与轴外质量相当，像质达到衍射极限。
The design results show that on-axis and off-axis aberrations of the designed laser scanning lens are almost equal, and the image quality achieves the diffraction limit.
借助于二元光学器件的独特性质，系统在仅使用两片锗透镜的情况下得到了接近衍射极限的光学质量。
The designed system benefits from the specialities of binary optical elements and approaches diffraction limitation by use of only two germanium lenses.
但是，一条被称为衍射极限的光学基本定律指出，显微镜的分辨率不会小于观察所用光源波长的一半。
But a fundamental law of optics known as the diffraction limit states that the resolution can never be better than half the wavelength of light being looked at.
这种显微镜利用局限在微小孔径上的隐失场提供物体表面形貌的细节，其分辨率可突破传统光学的衍射极限。
It utilizes the evanescent field confined at the tiny aperture for providing images of object surfaces with a resolution beyond the classical optical diffraction limit.
远场光学显微镜受衍射极限分辨率的限制，而近场光学显微镜南于缺乏层析能力，则无法实现超分辨的三维成像。
The resolution of far-field microscopy is limited by the diffraction limit, while near-field microscopy lacks the sectional function to image 3D pictures.
但由于衍射极限的存在，使传统的宽场光学显微镜横向和纵向的分辨率分别仅约为230nm和1000 nm。
However, resolution of a traditional wide-field optical microscopy is limited to about 230 nm laterally and 1000 nm axially, due to the diffraction-limit of light.
给出了完整的椭球形窗口光学系统的设计，设计结果表明，系统的调制传递函数在整个扫描视场范围内接近衍射极限。
A complete design example of elliptical window optical system is demonstrated and the results show that the MTF of optical system approaches the diffraction limit across the entire scanning field.
成像研究表明，该装置可对近场衰逝波分量进行有效探测并能实现超衍射极限成像，为近场光学探测研究提供了一种新的思路。
The research shows that the non-probe near-field optical microscope can detect the evanescent near-field wave effectively and the image with a super-d…
一个基本的极限是由望远镜衍射园面的大小决定的。
A fundamental limit is imposed by the size of the diffraction disk of the telescope.
这是一个极不错的数字，还没有到衍射的极限。
This is an excellent figure, not that far from diffraction limited.
从波动理论出发，证明极限情况下光的衍射结果就是光的直线传播。
Conclusion that result of diffraction of light is rectilinear propagation in limited condition is demonstrated from wave theory.
所得结构图像的分辨本领将优于电子显微图，而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original electron micrographs and may approach the diffraction limit.
所得结构图像的分辨本领将优于电子显微图，而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original el…
所得结构图像的分辨本领将优于电子显微图，而有可能接近于衍射分辨极限。
The resolution of the structure image so obtained may be higher than that of the original el…
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