从中可得到菲涅耳衍射区的许多特性。
It is shown that many properties of diffraction in the Fresnel region can be obtained.
同时指出所谓无衍射光束实际上是一种菲涅耳衍射现象。
It is pointed out that the non-diffracted beam is a kind of Fresnel diffraction phenomenon.
本文基于菲涅耳衍射计算公式，给出了实现衍射逆运算的方法。
In this paper, we presented the method that implement inverse calculation of Fresnel diffraction.
通过细丝后在其后菲涅耳衍射区留下阴影，测量阴影宽度可得细丝直径；
The diameter of a thin wire was obtained by measuring the shadow in the Fresnel diffraction zone.
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。
The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula.
基于多重菲涅耳衍射变换和相位密码板，设计了一种新的图像加密计算方法。
The new image encryption algorithm was proposed based on multiple Fresnel diffraction transforms and phase encryption masks.
根据准确的菲涅耳衍射振幅和光强解析表达式推导出光学系统像点附近的光强空间分布。
Intensity space distribution near image point of optical system is derived based on the accurate amplitude (therefore the intensity) analytic expression for Fresnel diffraction.
在圆孔的菲涅耳衍射的基础上，讨论环形光栅的菲涅耳衍射，并给出了计算机仿真结果。
Based on the Fresnel diffraction of the round hole, the Fresnel diffraction oft he circular grating is discussed. The computer simulations of the diffraction in tensity distributions is given.
在标量衍射理论的基础上，给出了圆屏(球)和圆环菲涅耳衍射的振幅及光强解析表达式。
The amplitude and intensity analytic expressions for disk (sphere) and annular aperture Fresnel diffraction are given on the base of scalar diffraction theory.
利用惠更斯菲涅耳衍射积分理论推导了涡旋光束经过轴棱锥聚焦后所获得的聚焦光强分布。
The focusing intensity distribution of vortex beams with axicon by using Huygens-Fresnel diffractive integral is investigated.
从光的菲涅耳衍射、波前相位重构入手，对连续信号进行了离散化处理，给出了数值计算公式。
The formula of numerical computing is presented with discretion for Fresnel diffraction and phase numerical reconstruction of wave front.
使用基尔霍夫衍射积分公式和菲涅耳衍射积分公式对高斯光束通过方孔光阑的衍射进行了研究。
The diffraction of Gaussian beams at an square aperture is studied based on the Kirchhoff and Fresnel diffraction integrals.
用广义惠更斯菲涅耳衍射积分对扭曲高斯谢尔模型光束通过有限尺寸透镜的聚焦特性作了详细研究。
In this paper, using the generalized HuygensFresnel diffraction integral, the focusing properties of twisted GaussianSchell model beams through an aperture lens have been studied in detail.
根据菲涅耳衍射近似理论，就菲佐干涉仪中的准直镜和标准镜面形误差对透过检测的影响进行了研究。
With the Fresnel diffraction approximation method, the influences of the collimated lens and standard lens surface errors on the transparence testing are analyzed in Fizeau interferometer.
用由广义惠更斯菲涅耳衍射积分推导出的传输方程详细研究了复宗量拉盖尔·高斯光束及其传输特性。
The elegant Laguerre-Gaussian (L-G) beams and their propagation properties are studied in detail using the propagation equation derived from the generalized Huygens-Fresnel diffraction integral.
应用菲涅耳衍射光强分布理论以及光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 distributing and the contributing range for using the serrated aperture are analyzed based on Fresnel diffraction theory.
从广义惠更斯-菲涅耳衍射积分出发，导出了洛伦兹光束通过一阶轴对称光学系统传输变换的解析公式。
Based on the generalized Huygens-Fresnel diffraction integral, the analytic propagation expressions for Lorentz beams passing through first-order axisymmetric optical system are derived.
根据菲涅耳衍射理论，采用微光学元件制作技术，通过三次套刻制作出八位相台阶的二元离轴菲涅耳透镜。
A binary Fresnel lens with 8 phase steps can be manufactured with micro-optical element fabricating technology and three times of alignment according to Fresnel diffraction theory.
用角谱理论来处理衍射光场，不仅速度快，而且在处理近场菲涅耳衍射光场时的准确度是其它方法无法比拟的。
When diffraction problems are solved by the angular spectrum theory, high speed and high accuracy can be obtained, especially for near-field Fresnel diffraction.
首先，利用菲涅耳衍射理论，分析了无衍射成像系统中点光源在透镜焦点及焦点前后所产生的无衍射光斑形式。
First, based on the theory of Fresnel diffraction, the diffraction patterns are analyzed when the point source at the front focus or it's nearby of the lens.
激光出现以后，人们获得了高强度、高单色性的相干光源，在许多实际问题中，将遇到繁杂的菲涅耳衍射的计算。
Since laser appeared, pure monochromatic coherent light sources of high intensity have been achieved. In many practical problems, there are miscellaneous Fresnel's diffraction calculations.
针对国内外现有半导体激光器准直器件的缺点，提出了一种用于半导体激光器准直的相位型二元菲涅耳衍射透镜的优化方法。
In this paper, we bring forth a new optimal design method of Fresnel diffractive lens using in light beam collimation of laser diode.
使用四种不同光源，对菲涅耳透镜的衍射效率进行测试。
Four kinds of laser source are used to measure the diffractive efficiency of Fresnel lens.
菲涅耳透镜的衍射效率是评价菲涅耳透镜质量的一个重要指标。
Diffractive efficiency of Fresnel lens is important factor to evaluate the quality of Fresnel lens.
本文简要论述了在单缝衍射教学中怎样把惠更斯—菲涅耳原理与菲涅耳丰波带法联系起来。
This paper has briefly stated how Huygens-Fresnel Principle and Fresnel half - zone method are combined in the teaching of single-slit diffraction.
固定损耗是由系统自身所用材料、表面处理决定的，包括菲涅耳损耗、球差损耗、衍射损耗、色散损耗、吸收损耗等。
The invariable loss comes from the materials and surface processing of the system itself, such as the loss of Fresnel, ball aberration, diffraction, chromatic aberration and absorb.
根据波动光学的理论，对菲涅耳近场衍射公式误差相位的影响进行了分析。
Brsed on the wave theory of optics, the affect caused by the phase error in Fresnel near-field diffraction equation is analysed.
并以4台阶、8台阶、16台阶菲涅耳透镜为例，系统分析对准误差对衍射效率的影响并进行计算机模拟研究。
Taking 4 step and 8 step and 16 step Fresnel lens for example, the effect of alignment error on diffractive efficiency is analyzed systematically and simulated by computer.
在衍射理论基础上详细推导了三种再现算法(菲涅耳积分变换法、卷积法、傅立叶变换法)的数学表示。
Mathematical representations for three kinds of reconstruction algorithms (Fresnel integral, convolution and Fourier transform) of digital hologram are deduced based on the diffraction theory.
实验中发现，经常使用的大孔径会聚光束的圆孔和圆屏衍射图样不同于一般的菲涅耳圆孔和圆屏衍射图样。
It is discorered that circular hole diffraction and circular disk diffraction pattern in large aperture convergent beam are different from those of general Fresnel diffraction.
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