The resolution of far-field microscopy is limited by the diffraction limit, while near-field microscopy lacks the sectional function to image 3D pictures.
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。
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.
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230 nm和1000 nm。
The image quality evaluation for diffraction-limited optical synthetic aperture imaging system is analyzed with two-point resolution and optical transmission function (OTF).
本文就照相物镜的像质评价的几种方法，做了比较；设计了测量照相物镜光学传递函数的光路系统并进行实际测量。
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