提出基于衍射光学器件的光学图像级联加密系统。
Cascaded systems for optical image encryption based on diffractive optical elements are presented.
提出基于衍射光学器件的光学图像级联加密系统。
Cascaded systems based on diffractive optical elements for optical image encryption are presented.
发现并研究了衍射光学器件优化设计中空间延拓分量的存在及其交叠现象。
The existence and overlapping phenomena of spatial expanding components have been discovered and investigated in designing diffractive optical elements.
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.
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.
本文基于标量衍射理论，建立了简明的对准误差与二元光学器件衍射效率的分析模型，得到了适用于一般位相分布器件的衍射效率的简便实用的计算公式。
Based on the theory of scalar diffraction, an error model is established to investigate the effect of alignment error on the efficiency of binary optics elements.
本文基于标量衍射理论，建立了简明的对准误差与二元光学器件衍射效率的分析模型，得到了适用于一般位相分布器件的衍射效率的简便实用的计算公式。
Based on the theory of scalar diffraction, an error model is established to investigate the effect of alignment error on the efficiency of binary optics elements.
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