零屈光度透镜
Or when the distance is near to zero, and the Rayleigh distance is farther than the lens focus, the less focalized waist can be obtained.
或l接近于零,瑞利距离Z0远大于透镜焦距时,能够获得较小的聚焦束腰。
When measuring the surface of workpiece, the piezoelectric actuator drive focusing lens to move vertically to ensure that the focus is always on the surface of workpiece in every sample interval, and the focused signal error return to zero.
在测量工件表面形貌时.压电陶瓷驱动器驱动聚焦物镜进行垂直位移.从而确保在每一个采样间隔中焦点总是落在工件表面上,同时使得聚焦误差信号回零。
英语网 · 英语词汇
英语网 · 双语娱乐资讯
英语网 · 日常口语