diffraction fringe

Variation in single slit Fraunhofer ′ s diffraction fringe in transparent medium

透明介质中单缝Fraunhofer′s衍射条纹的变化

In order to eliminate the false singularities in the Fringe Components of Equivalent Edge Currents expressions, this paper extends the treatment of false singularities of diffraction coefficients in the Physical Theory of Diffraction into the Fringe Components of Equivalent Edge Currents expressions.

为消除等效电磁流边缘分量表达式中虚假奇异点，将物理绕射理论中处理绕射系数的虚假奇异点的方法推广到等效电磁流边缘分量表达式中。

In optical measurement, we could calibrate precision instrument and increase the measuring precision by using the laser interference ( diffraction) fringe orders; the fringe orders could be automatically determined by the zero order fringes' minimum chromatic polarization;

光测量主要通过激光发生干涉（衍射），利用干涉（衍射）条纹的级次进行定标、精确测量，利用零级条纹色偏最小原理，对条纹级次进行自动判断；

When the slit of light source there is definite width W, the width of diffraction fringe should increase, and the minimum resolving angle Δθ k should be increasing, then the resolving power of actual grating system should be decreasing.

当光源狭缝还有一定宽度W时，衍射条纹将增宽，相应最小分辨角Δθk将增大，实际光栅系统的分辨本领将减小。

Phenomenon of Moire fringe is explain by ordinal number equation and diffraction theory respectively.

对莫尔条纹现象,分别用序数方程原理与衍射干涉原理解释粗光栅、细光栅的莫尔条纹现象.

Analytic Expression of Diffraction Fringe of Varied-line-space Plane Gratings

平面变线距光栅衍射场的解析表达式

The distance between adjacent dark fringes of diffraction fringe of wire is determined at low and high temperature by CCD detector, the value of high temperature is measured by pyrophotometer, and the coefficient of linear expansion of wire is calculated.

利用CCD探测器分别测出常温和高温下金属丝衍射花样相邻暗纹的间距，用光学高温计测出加热时的温度值，从而求出线膨胀系数。

The measurement of diffraction fringe width, the tropism of incident light E and the transverse displacement of CCD are the main factors that influence this precision from the study of theoretical arithmetic and experiment.

理论计算和实验表明影响细丝直径测量精度的因素包括：衍射条纹宽度的测量、入射光波E取向和CCD的横向移动等。