查询词典 diffraction

An equation for calculating the Fresnel diffraction field of a grating under short-pulsed light illumination is derived.

首先导出了光栅在短脉冲激光照射下的菲涅耳衍射光场的方程，利用该方程分析了一个开口比为1：4的光栅的衍射光场。

Blind digital watermarking technique based on optical fresnel diffraction.

基于光学菲涅耳衍射的"盲数字水印"技术。

The experiments of UV proximity lithography show that the corrected Fresnel diffraction model could get more accurate results than that of the Fresnel model.

同时计算机模拟和实验结果都说明尺寸越小的微结构，所能够得到的光刻深度越小，需要的曝光剂量越大；光刻所得微结构的中间会比较宽。

Durnin are analyzed basing on analytic expression for annular Fresnel diffraction.

从圆环菲涅耳衍射的解析表达式分析了由J。

The intensity distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory.

应用菲涅耳衍射光强分布理论以及光轴上光强分布理论对波纹光阑在一定条件下的作用范围进行了分析。

Far field distributions of in-phase mode and out-of-phase mode were calculated using Fresnel diffraction formula of one-dimension on the basis of near field amplitude distribution.

在同相模和异相模近场分布的基础上，利用1维情况下的菲涅耳衍射公式计算了其远场分布。

Some issues in recording and reconstruction of near distance digital holography are discussed where the recording distance is shorter than the Fresnel diffraction distance.

讨论了记录距离小于菲涅耳衍射要求的近距离数字全息记录和再现问题。

On the basis of theoretical analysis of digital holography, the preliminary study carries out through computer simulation and experiments. The main work is as follows:Firstly, on the basis of off-axis Fresnel diffraction, the principles of optical holography and digital holography are introduced. Besides, the theories such as recording digital hologram, numerical reconstruction and the related digital image processing methods are analyzed.

本论文从理论分析、计算机仿真和实验三个方面对数字全息技术进行了初步的研究，主要完成了以下工作：首先，介绍了传统的光学全息术和数字全息技术的基本原理，以离轴菲涅耳全息为例对数字全息的记录条件、数值重现算法、以及相关的数字图像处理方法进行了详尽的理论分析。

The speckle velocity equal to the nano-particle velocity in the fresnel diffraction field is proved in theory.

根据这个结论，利用高速CCD拍摄散斑图，并进行图像处理获得与散斑运动速度相关的信息就可以得到纳米颗粒的运动速度。

Applying Fresnel diffraction theory, this technique is proved to enlarge the equivalent dimension of CCD and increase the cutoff frequency of optical system, so this method can improve the imaging resolution of digital holography.

用菲涅耳衍射理论证明了该技术可有效增大CCD探测器的等效尺寸和系统截止频率，从而提高数字全息成像分辨率。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。