The laser beam passing through the focusing systems gets an facula,which consists of main spot and sidelobe on the focus plane.
由于光的衍射作用 ,使通过聚焦系统的激光束入射到特定靶面成一光斑 (主光斑 ) ,而在主光斑以外还有次级光斑圈 (旁瓣 )。
Light intensity of facula increases when the diameter of the trees increases, and there lies a correctitude .
光斑的光照强度随着直径的增大而增加 ,中心相对照度和直径呈正指数关系 。
The results of output energy and pulse widths and the three-dimensional distribution of far field facula under different conditions were given.
报道了在ND:YAG激光器上利用受激布里渊散射(SBS)补偿腔内插入用HF轻度腐蚀的普通薄玻璃片模拟激光棒表面的损伤而引起的相位畸变,实验给出了不同参数条件下的输出能量、脉冲和远场光斑的三维分布情况。
According to this model,the parallel misalignment and angular misalignment can be calculated so long as light spot coordinate of PSD at two discretionary angles is measured.
据此模型,只要测量出任意两个角度时光斑在PSD上的坐标,即可求出两轴的径向偏差和角度偏差。
The theoretical relation of position signal with the light spot is provided, and thus the tendency of experimental position signal contracting to the center of PSD gets good explanation when combined with background light.
分析了ＰＳＤ（ＰｏｓｉｔｉｏｎＳｅｎｓｉｔｉｖｅＤｅｔｅｃｔｏｒ）作为二维位置传感器的优越特性，给出了理论上反偏状态下的ＰＳＤ的定位特性与光斑的关系，解释了在信号光源强度较弱时的位置坐标向中心靠拢的实验现象，理论和实验结果符合得很好，并由此将背景光划分为漫射型和集中型，进一步建立起了背景光影响下的位置误差估算公式以及消除背景影响的算法。
The method can confirm the Gaussian distribution of optical intensity for the fundamental transverse mode of the He-Ne laser and determine the size of its light spot.
这种方法能够证实氦氖激光基横模的光强分布是高斯分布，能够确定光斑的大小。
To adjust the infrared laser to the optimal place,we analyze and calculate the relation between the laser spot and the laser place.
重点分析和研究了激光器光斑,物体表面激光光斑和四象限探测器探测的激光光斑大小的计算。
As for certain material,we found that corresponding thickness and proper dimension of spot were necessary for accurately determining ultrasonic velocity.
发现用激光超声测定声速的时候,对于特定的材料,一定的厚度和合适的光斑大小对于减小实验误差是非常重要的。
The influence of knife-edge outline on the spot measurement is discussed and some theoretical results are shown in this paper.
本文从理论上分析了刀口的几何特性与物理特性对微小光斑测量的影响。
To measure the laser facula in the far field using detector array,three requirements-laser energy density,the size of the array and the space be- tween detectors,are analyzed in the paper.
根据仅由衍射效应决定的远场激光光斑的分布函数,并以10。
It is found that laser beam size has an important influence on the tempe.
测试了涂层的温度场并模拟计算了光斑能量分布。
In the paper we introduce the structure,operational principle and critical skills of the testing system for the laser beam through atmosphere.
文中介绍了激光通过大气随机信道的光强分布测试系统的结构、工作原理和关键技术,在设计激光光斑测量系统基础上,进行了不同气象条件下的视距实验测量,给出了不同天气情况下的测量结果并进行了分析和讨论。
Study on niobium-alloy diode-laser's faculae
超小型铌合金泵浦激光器光斑问题研究
Application of mode detection based on the minimum probability of Bayes in faculae removal in underwater V-groove weld
贝叶斯最小概率模式识别在水下V形焊缝识别中光斑去除的应用
Flare is often described in terms of its position in the picture, e. g., edge flare, bottom flare.
光斑常按照它在图象中的位置来描述，例如，边沿光斑、底部光斑。
A luminous spot on a lunar halo.
幻月，假月月晕上的光斑
A patch of thin ice; patches of sunlight.
一片薄冰，日光斑驳
Light energy ,limit and light spot was decided by patient' s condition.
光凝能量、范围及光斑大小视病情而定。
We will consequently refer to it as the beam "spot size".
我们将它称为光束的“光斑尺寸”。
The Research of Appraisal System with Laser Suppressional Facula Illumination Precision;
激光压制光斑照射精度评估系统研究
Research on Laser Spot Identification and Characterization Based on Image Processing;
基于图像的激光光斑识别和特性分析
Spot-detecting Camera in Laser Communication ATP Fine Tracking System
激光通信ATP精跟踪光斑探测相机
An Algorithm for Laser Spot Precise Locating in Omni-Directional Laser Warning System
全向激光告警系统中激光光斑精确定位方法
Measuring the size of grains in emulsion using the speckle contrast of laser
激光斑纹反差测量乳状液颗粒大小
that freckled the ground with innumerable little spangles of light.
地上被照得光点斑斑。
A dark region or blemish, as on a polished stone.
黑斑，瑕疵黑块或黑斑，如磨光的石头上的黑斑
patches of fog, ice, sunlight
片片的雾、 块块的冰、 斑斑的阳光
The sun has faded the curtains so the colours are rather patchy.
窗帘被阳光晒得褪了色, 显得斑斑驳驳。
laser image-speckle interferometer
激光影像-斑点干涉仪
The sunlight stippled the trees.
日光在树上形成了斑纹。
The watery sunshine rested on the walls in blurred and desultory gleam
淡淡的阳光象水一样洒在墙上，斑斑驳驳的。
The changes of macular light sensitivity correlates with the central visual acuity and retinal thickness of macular fovea.
黄斑光敏度变化与中心视力、斑中心凹厚度相关。