Design and analysis of the Fresnel zone plate applied in the refractive-diffractive hybrid imaging system with the short focus length;
短焦距折衍射变焦成像系统中菲涅耳波带片的设计与分析
By using three-time lithography,a combination structure of Fresnel zone plate and plane gratings with 8 phase level steps can be prepared on a quartz substrate by micro-optical element fabrication technology according to Fresnel diffraction theory.
根据菲涅耳衍射理论,采用微光学制作技术通过3次套刻,将8位相台阶的菲涅耳波带片和平面光栅组合制作在同一块基片上,构成同时具有色散分光和聚焦光谱线功能的位相型光栅。
By using Fresnel zone plate′s focusing function, and combini.
并提出一种制作隐形条型码的方法 ,利用菲涅耳波带片调制 ,制作成具有自聚焦功能的隐形条型码。
It is an off axis, binary phase, Fresnel zone plate.
低效取样光栅是激光取样技术的一种重要元件 ,它可以看成离轴的二相位的菲涅耳波带板。
In order to verify the effect of Fresnel zone plate convoluting with the object wave function,we used the nonmovement convolution device to realize the processes of convolution and deconvolution between FZP and the object wave function.
为了验证在光学扫描全息术中菲涅耳波带板与物体波函数之间卷积的作用，本文利用投影式卷积装置实现了菲涅耳波带板与物体波函数之间的卷积与解卷积过程，文中给出了实验装置及实验结
Using the theory of binary optics to improve the Fresnel zone plate, one can raise its diffraction efficiency greatly.
利用二元光学理论改进菲涅耳波带板，能大幅度提高衍射效率。
Based on the half wave belt, we discussed the Fresnel zone plates’ diffraction, its multiple focus and light intensity of focuses.
基于半波带的分析方法简单明了地分析了平行光经菲涅耳波带片衍射后的多焦点特性以及各焦点的光强变化规