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- Fresnel diffraction effect 菲涅尔衍射效应
- Compensation of Diffraction Effect in SAW Narrow Band Filters. 窄带SAW滤波器衍射效应补偿短句来源嗯,带了。
- The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula. 采用菲涅耳衍射公式和傅里叶变换得出了输出面上的光场的理想计算公式。
- A new point of view is that if the angle between the normal dir-cetion of incident wave surface and Z axies is smaller, fresnel diffraction for-mation is still tru, and presented. 在此基础上,对费涅耳衍射近似条件作了讨论,提出此近似条件可表达为照明波波面法线与Z轴夹角很小时,费涅耳衍射成立的新论点。
- 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。
- The intensity ripples of Fresnel diffraction are suppressed and the filling factor is improved by using the serrated aperture. 从光路的实际使用效果看,对比圆孔光阑,应用波纹光阑在其作用范围内实现了对光束衍射调制的抑制和填充因子的提高。
- This paper introduced an optical setup to perform fractional Fourier transformation by Fresnel diffraction with a converging spherical wave illumination. 提出了在会聚球面波照明下，用菲涅耳衍射实现分数傅里叶变换的光学装置。
- We attempt to investigate the diffraction effect in IC specimens by the relative uniformity of the tomogram intensity. 本文用灰度图像相对密度均方差的方法表征了集成电路（IC）厚样品中金属导线的衍射效应。
- Numerical results demonstrate the advantages of super-Gaussian and serrated apertures in suppressing Fresnel diffraction modulations and maintaining relatively large fill factor. 数值计算结果表明,超高斯光阑和锯齿光阑的优点是能有效抑制菲涅尔衍射调制并有较大的填充因子。
- To resolve this problem, a free space transmission system for optical signals is developed on base of diffraction effect of acoustooptic crystal. 由于电信号传输系统保密性和抗干扰能力差，为此，利用声光晶体的衍射效应研制了一种光信号自由空间传输系统。
- Using our method,the FFT program needs a little of computer memory to finish the calculation of Fresnel diffraction with the arbitrary interval of sampling and the demanded precision. This method can be extended conveniently to Collins? formula. 利用这种方法 ,只要用小容量 FFT程序 ,便能完成任意给定取样间隔或计算精度的菲涅耳衍射及柯林斯公式的计算
- Based on the Fresnel diffraction integral, the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed. 摘要基于菲涅耳衍射积分公式，推导出了会聚球面波通过环形光阑后场分布的解析公式，并讨论了一些特殊情况。
- Based on the theory of fractional Fourier transform (FRT) and one of its very important parameter, fractional order, the relationship between FRT and Fresnel diffraction are deduced and analyzed. 摘要基于分数傅里叶变换理论并以分数阶这一重要参量为纽带，推导和分析了分数傅里叶变换与菲涅耳衍射之间的关系；
- The statistical properties of dynamic speckles produced in the Fresnel diffraction field by the rotating cylindrical object considered to be a weak phase screen are investigated in detail. 研究了当旋转圆柱体表面满足弱散射体条件时，在菲涅尔衍射场形成的动态散斑的统计特性；
- The dispersion caused from the chromatic aberrations of lens is smaller than that from diffraction effects of it. 与衍射效应产生的色散相比，透镜本身的折射率色散很小。
- Basing on the light diffracting theory of Kirchhoff, we obtain the expression for the intensity of speckles in deep Fresnel diffraction region. 摘要利用基尔霍夫衍射理论分析了菲涅耳深区内的散斑场，得到了菲涅耳深区散斑光强的一般表达式。
- Fresnel diffraction of a plane transmission grating 平面透射光栅的菲涅耳衍射
- The influence pattern of deep water channels upon wave propagation is studied by REF/DIF model,which combined refraction and diffraction effects together. 本研究是把折射和绕射的相关影响结合起来考虑的复合折射-绕射模型REF/DIF模型应用于深水航道对波浪传播的影响规律的研究。
- Calculation of Fresnel diffraction 衍射计算
- Punishment had very little effect on him. 惩罚对他没有什么效果。
