laser speckle meaning in English
激光斑点
激光散斑
Examples
- Real - time measurement of the object angular vibration by laser speckles
目标角振动的散斑法实时测量 - Influence of incidence angle on the measurement of surface roughness by laser speckle
激光入射角对光声信号大小的影响 - The diffraction formula and statistical law of optical fields are used to get the cross - correlation function of intensities of laser speckles of the moved diffuse object
该方法利用光传播的菲涅尔衍射公式和光场的统计规律，给出散斑场光强在散射体位移前后的高斯光束相关函数的表达式。 - Math . and physics department , yanshan university , qinhuangdao 066004 ) [ / align ] [ align = left ] [ b ] abstract [ / b ] : through the pictures taken by means of laser speckle on the metal material weldment , we can obtain double - exposed displacement patterns at a temperature range . by point - to - point analysis heat displacement field at the welding points can be measured , and the distribution of thermal strain and thermal stress can be obtained . as a result , the flaws at welding points can be measured through experiments
本文应用激光散斑法，其测量灵敏度介于全息干涉法和云纹法之间，象所有其它散斑法一样，它是一种非接触式的测量技术，对环境及设备条件要求不高，对被测件表面不需进行特殊处理，可在生产现场对实际物体进行测试。 - Laser speckle interferometry was used as the experimental method to test the coefficient of thermal expansion ( cte ) of the metal composite leads used in the packaging structures and the thermal deformations of the entire packaging structures due to the change of temperature from room - temperature to 150oc
通过实验和数值模拟的方法对其热变形和热应力进行了研究。采用激光散斑干涉法测量了从室温到150oc的封装用金属复合引线的热膨胀系数和整个封装结构的热变形。