查询词典 moire

We expect it will benefit the industry field to break through the optical measuring limits at present by offering some new ideas. Optical measuring research based on moire interferometry has developed for several decades. The main idea of this research is to utilize the moire effect caused by two superimposed gratings of identical or similar spatial frequency. One is the reference grating and it is a virtual grating created by a computer program in this research; The other grating is the image of grating projected on the measured surface by the DLP projector, and this grating will distort because of the different sloped profile of the surface. To superimpose the program-created grating and the captured distorted grating will derive the so-called moire effect. This research combined the basic theory of optical interferometry and moire effect to project the different phases of the projected grating fringes by the phase-shifting method and compute the principal value of arguments between -π,π. In the end, the phase unwrapping program based on discrete Fourier transform of solving PDEs is used to unwrap the phase of the measured surface, and finally the surface profile is derived by the optical measuring system.

以叠纹干涉术为基础的光学检测研究之发展早已行之有年，而在本研究中所采用的投影叠纹法(Projection moiré)之主要精神在於藉由两道空间频率相近或相同的光栅相互叠加而成的效应，其中一道为参考光栅，而本研究中的参考光栅是以程式产生可调整不同空间频率的虚拟光栅；另一道则为投影至待测物表面的光栅影像，而在起伏高度不一的待测表面上的光栅影像会受到待测物表面起伏状况不同而在观测方向产生光栅投影条纹影像的歪曲变形，将电脑产生的参考光栅与由影像撷取装置所获取投影於待测物表面的光栅影像作叠合，便会产生所谓的叠纹效应；利用基本的光学干涉理论与叠纹效应结合，本研究中以相移法来改变投影於待测表面的光栅相位，再以相移法的理论反运算出在带有待测面各点高度资讯之介於-π，π相位主幅角，再以离散傅立叶转换解偏微分方程的相位重建程式还原待测面的相位值，以得知待测面之表面轮廓。

It uses a principle of Geometric Moire, which is that, between the angle of Moire stripe,the space between Moire stripe and the angle of grating bar line exist specific relationships.

图1 云纹空间分布图0 引言现代科学实现微小角度的测量已经不是难题了，但这都是以复杂精密的机械结构为代价的。

Based on the mesh/line unmatched moire" and incorrect screen angle moire", this paper analyses moire in screen printing.

本课题主要是围绕着目／线配比不当龟纹和加网角度不当龟纹这两个方面对丝印龟纹进行理论分析和研究。

The analytical geometry is used to study the formulas of Moire fringes for the measurement of screen line, to analyze the geometric forms and their properties of Moire fringes , and further discusses the bases of theory for the measurement of screen line.

本文用解析几何学方法研究测量网线的莫尔条纹方程，分析莫尔条纹的几何形状与特性，并且进一步讨论网线测量的理论依据，旨在深刻地揭示测量网线的莫尔条纹原理。

Through computing the space between Moire stripe and the angle of grating bar line, we can get the angle of Moire stripe.

这样不仅省却了机械结构，而且也减少了人为操作产生的误差，为实现智能化角度测量提供了可能。

In the beginning, we describe the definition of coplanarity and warpage in electronic industry, and improve the original method to search coplananrity in a shorter period of time. Then, we introduce the original theory of Shadow Moire, and establish optical measuring system by using Shadow Moire method, phase shifting method, phase unwrapping method…etc.

首先叙述电子元件所定义的共面性与翘曲量原理，并改变原搜寻方式，以较少的时间搜寻共面性；接著介绍阴影叠纹法原始立论基础，并加入相位移法、相位展开法。。。

The Moire effect s of CCD-image sensors are studied,and the equationfor optical transmission characteristics of Moire fringes is presented in this paper.

研究了CCD像感器的莫尔效应，给出了CCD产生莫尔条纹的光强分布特性方程，当满足一定条件时可获得用于计量的莫尔条纹。

Diffractive characteristic of periodic structure objects were analyzed and generalized by the principle of the recordation and reappearance for spatial information of object by photons. Ordinary Moire effect can be regarded as the limit of the coherent Moire effect.

为拓展周期结构成像的应用领域，论文在分析了信号与系统关系的基础上，提出将扩大系统综合孔径实现超分辨成像方法延伸到亚波长段，用Talbot效应和莫尔条纹技术实现亚波长周期结构超分辨成像。

Another application of moire technology in optical security is dynamic moire technology.

莫尔技术在防伪领域中另一方面的应用是动态莫尔。

This is our in-depth study of the moire characteristics and dynamic moire anti-false feasibility.

这是我们浮浅查究龟纹共性和龟纹防伪可行性的动力所在。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。