for near-field recording systems, aperture and solid immersion lens(sil) are two popular techniques to overcome light diffraction limit and reduce spot size.
with the techniques and elements of diffractive optics, it is now feasible to break the diffraction limit and achieve optical superresolution.
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。
the results show that the optical performance approximates to the diffraction limit and the design has better achromatic performance. the mtf is higher than 0.56 in lwir and higher than 0.72 in mwir.
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.
subsequently, the influence of optical imaging-associated diffraction limit on the performance of single particle tracking is quantitatively analysed.
并定量分析了三维成象中的衍射限制对单微粒跟蹤的影响。
the objective focuses a laser beam close to the diffraction limit on the image plane.
该物镜可在像面上达到衍射界限地会聚激光。
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.
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。
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.