【摘要】 对李萨如图激光扫描模拟机理进行理论分析.其结论是:两个以不同频率相互垂直简谐振动的反射镜,将定向入射的激光光束转化为同时在两个相互垂直方向上散射的激光束,且相应两个方向的散射角分别依两镜片简谐振动的规律变化,这种散射激光束照射在演示屏上光斑的运动轨迹便是李萨如图的模拟.更多还原

【Abstract】 The mechanism of laser scanning analogy of Lessajous figure is pointed out.A beam of laser reflected by two mirrors and projects on a screen. The mirrors vibrate simple harmonically about axes in thier planes and the axes are perpendicular to each other. When the periods of the mirrors are in simple ratio, the Lessajous figure appears on the screen.更多还原