interference n. 1.冲突,抵触。 2.干涉,干预。 3.妨碍,打扰,阻碍物。 4.【物理学】干扰;干涉。 linguistic interference本族语对外语学习的干扰。 stop interference from outside 制止外来干涉。 run interference for (橄榄球赛中)保护(带球者)以防对方抢球。
pattern n. 1.模范,榜样;典范。 2.型,模型;模式;雏型;【冶金】原型。 3.花样;式样;(服装裁剪的)纸样;图案,图谱,图表;机构,结构;特性曲线;晶体点阵;(电视的)帧面图像。 4.方式;形式;格局;格调。 5.(衣料等的)样品,样本,样板。 6.〔美国〕一件衣料。 7.(炮弹等的)散布面;靶子上的弹痕。 8.(飞机的)着陆航线。 a pattern wife 模范妻子。 a paper pattern for a dress 女服纸样。 a machine of a new [an old] pattern新[旧]型机器。 a cropping pattern农作制。 after the pattern of 仿…。 vt. 1.照图样做;仿造,摹制 (after; upon)。 2.给…加花样,用图案装饰。 3.〔英方〕与…相比 (to, with)。 vi. 形成图案。 pattern oneself after 模仿,学…的榜样。 adj. -ed 仿造的;被组成图案的(patterned forms【语言学】 仿造词)。 n. -ing 图案结构,图形;(行为等的)特有型式。 adj. -less 无图案的。
On the basis of these theories , detailed experiment investigations are carried out as follows : ( 1 ) the interference pattern of two - prism is adopted to illuminate linbo3 : fe crystals . then array of planar waveguides are fabricated in the crystals due to photorefractive effect 在此基础上,详细地进行了以下几个方面的实验探讨: ( 1 )利用平行光通过双棱镜后所形成的干涉光场辐照linbo _ 3 : fe晶体,在晶体中写入阵列平面光波导。
Experimentally , the plasma produced by cable plasma gun ( c - gun ) and dense plasma focus ( dpf ) was measured by the laser differential interferometer system . the clear interference patterns were acquired at different time . the contour maps of line integral density and curves of radial local density at different height above nozzle were presented 实验上,对等离子体断路开关中的电缆等离子体枪( c - gun )和等离子体焦点装置( dpf )产生的等离子体进行了测量,获得了对应不同时刻的清晰的干涉图像,给出了线积分密度等值线图和距喷口不同高度处的径向密度分布。
This research is aim at putting forwarding laser wavelength scanning interference testing method . processing and analyzing instantly - read interference pattern corresponding with continuous varying wavelength , the method overcomes the following disadvantage . for example , the longer referenced and measuring optical circuit in big - scale high - accuracy asphere testing , and the sensitive interferential system to the disturb , such as the oscillation of worklable , dithering of air , and so on 研究的目的主要是针对大型高精度非球面面形检测中干涉仪的参考光路和测量光路较长,干涉系统对工作台振动和空气抖动等外界干扰因素的影响敏感,干涉图不稳定等问题,提出了激光波长扫描干涉测试方法,该方法通过对瞬间读取的、与连续变化波长对应的干涉图的处理和分析,克服了上述缺点,为大型高精度非球面的检测提供了一种适用的方法。
The paper studies mainly a new kind of measure method of aspheric surface - laser wavelength - scanning interference testing . this research is aimed at putting forwarding laser wavelength scanning interference testing method . processing and analyzing instantly - read interference pattern corresponding with continuous varying wavelength , the method overcomes the following disadvantage : the longer referenced and measuring optical circuit in big - scale high - accuracy asphere testing and the sensitive interferential system to the disturb , such as the oscillation of worktable , dithering of air , and so on 研究的主要目的是针对在大型高精度非球面面形检测中干涉仪的参考光路和测量光路较长,干涉系统对工作台振动和空气抖动等外界干扰因素的影响敏感,干涉图不稳定等问题,提出了激光波长扫描干涉测试方法,该方法通过对瞬间读取的、与连续变化波长对应的干涉图的处理和分析,克服了上述缺点,为大型高精度非球面的检测提供了一种适用的方法。
Compared with mechanics - electricity feedback control method , laser diode feedback control method and optical bistable equipment control method , the circuit is relatively simple , furthermore , simply adjust the optical system to increase the number of pixel corresponding to the interference pattern width , which will promote the control precision of the system 和已有的机电反馈控制方法、半导体激光器反馈控制方法、光学双稳装置控制方法相比,电路较为简单,而且,简单地调节光学系统使干涉条纹宽度对应的象素数增大,即可提高系统的控制精度。
Numerical simulations were done to show the distortion of the wavefront and the interference pattern under several kinds of typical plasma density distributions . the ray path in plasma was calculated by the numerical solution of the vector equation of light ray , when the plasma density was closing to the critical electron density of the laser frequency . through the simulations , the factors that influence the measurement were found out under different density distributions and shapes of plasma 在此基础上,采用数值模拟的方法,计算了在几种典型的等离子体密度分布下,激光波面的变化和产生的干涉图样;并用光线矢量微分方程的数值解法计算了当等离子体密度接近光频临界电子密度时,光线在等离子体中的传播路径,从中掌握了在不同的等离子体密度和形状下,进行干涉测量所应估计到的因素。
The holographic wavefront recording process records the interference pattern of the object and the reference waves , and thus forms the hologram , which simultaneously records the information about the amplitude and phase of the object waves ; the holographic wavefront reconstruction , by means of the diffracted waves , can reconstruct the original object wave from the hologram illuminated by lights 全息波阵面记录将物光和参考光以干涉条纹记录成全息图,此全息图同时记录了物光波的振幅和相位;全息波阵面重现,就是用光波照射全息图,通过光的衍射,从全息图中再现出原始物体的光波。
The binarization , dilation and thinning of interference pattern are stressed . computing the excursion of interference pattern based on fourier transform is based on the fact that interference pattern has different phase at different position , the signal extraction of interference pattern and phase unwrapping algorithm are mainly discussed . computing the excursion of the interference pattern based on the interference pattern intensity distribution is to position the fringe according to the intensity distribution characteristic 基于图像处理计算干涉条纹漂移量,目的是抽取干涉条纹的骨架,通过条纹骨架的定位实现对条纹的定位,重点讨论了条纹图像的二值化、膨胀和细化;基于傅里叶变换计算干涉条纹的漂移量,是基于条纹不同位置处的相位不同这一事实,重点讨论了干涉条纹信号的提取和干涉条纹相位去包裹算法;基于条纹亮度分布计算条纹漂移量,是根据条纹自身亮度分布的特点对条纹进行定位。
Two spherical waves and multiple spherical waves interference , and yang ' s interference experiments are simulated by using different methods . two spherical waves interference is focused on the on - plane or out - plane of the spot light source plane and the observing plane . then , we analyze how the temporal coherence of optical waves influence the contrast of the interference pattern 用光波波前叠加的方法实现了对两列球面波干涉、多光束干涉等实验的仿真;用传播矩阵描述衍射光波波前传播的方法对杨氏双缝和双孔干涉实验进行了仿真,并具体详细地分析了单缝衍射对双缝干涉的影响;另外还分析了光场的时间相干性对干涉条纹反衬度的影响。