The most popular detection methods both at home and aboard are introduced,and a method on the position control system for beam focus is presented during laser beam cutting process based on CCD,which can accurate detect and control the laser focus position during laser beam cutting process by using the laser triangulation and CCD imaging system coordination digital image proce.
激光焦点位置的检测与控制是激光切割系统中的关键技术之一。
Clinical research on treatment of macula edema with focal argon laser;
焦点激光治疗黄斑水肿的临床研究
The Study of Designing Diffractive Axicon with a High Lateral Resolution and a Large Depth of Focus;
实现小焦斑长焦深激光焦点的衍射Axicon的设计研究
Clinical research on treatment of macula edema with focal argon laser
焦点激光治疗黄斑水肿的临床研究
Study on method of detecting laser focus
激光切割中的焦点位置检测方法研究
Using Knife-edge Method at the Focus of a Lens to Measure the Beam Divergence of a Giant Pulse Laser Output
焦点刀口法测量巨脉冲激光的光束发散角
The Transformation Process of Phase Singularities of Laser Beams Near the Focal Plane;
激光束焦平面附近位相奇点的变化规律
Numerical investigation on evolution of flow field in ignition area formed by laser focusing
激光聚焦点火区域流场演化的数值研究
(optics) having two foci.
（光学）有两个焦点。
laser scanning confocal microscope
激光扫描共焦显微镜
Development of Solid Surface Velocity Laser Double Focus Cross-correlation Measurement System Based on FPGA;
基于FPGA的固体表面速度激光双焦点互相关测量系统研制
The Character of Corneal Regeneration Nerves after Different Excimer Laser Operation by Confocal Microscopy;
共聚焦显微镜分析不同准分子激光切削法角膜神经纤维再生特点
Study of Laser Beam Width, Beam Quality and Focal Shift;
激光光束束宽、光束质量和焦移的研究
actinic focus
【物理】光化学线焦点
concentrate rays of light into a focus
把光线集中在焦点上
The Influence of Task Difficulty on Focus Switching and the Activation of Focused Code
任务难度对焦点转换和焦点内信息激活的影响
The energy source for laser beam machining is a highly concentrated beam of light.
激光切削的能量来源于一束高聚焦光。
The Transformation of Gaussian Beams Pass through the Defocusing Telescope System;
高斯光束通过离焦激光扩束器的变换
Data can be crammed much tighter on a CD than on a magnetic floppy or hard drive because a laser beam can be focused to a much smaller point than magnetic heads.
数据在光盘上的排列比在软盘或硬盘上更加紧密，原因是激光束可以比磁头聚焦到更小的点上。
A Study on the Focusing Properties of Laser Beams Passing Through an Astigmatic Lens;
激光光束通过像散光学系统的聚焦特性研究