Aimed at image processing technology

an auto focusing system is designed for nano-second pulse laser processing system.Through studying the historical background of the focus detection and principles of optical imaging

the auto focusing system adopts image gradient as the auto focusing evaluation function.Combined with the auto focusing system

a nano-second pulse laser machining system

including control system

software of computer

mechanical structure and optical system is designed.The relationship between experimental results and evaluation function of image gradient is analyzed.It confirms that the auto focusing system is suitable for laser processing system

and can improve the machining precision and efficiency.