一种收集激光切割热辐射光的光学装置  

An Optical Device for Collecting Thermal Radiation from Laser Cutting

作　　者：朱天凤 徐彬 罗海燕 Zhu Tianfeng;Xu Bin;Luo Haiyan(Shanghai Institute of Laser Technology,Shanghai 200233,China)

机构地区：[1]上海市激光技术研究所,上海200233

出　　处：《应用激光》2021年第2期395-398,共4页Applied Laser

基　　金：上海市科委项目(19511108600)。

摘　　要：提出了一种收集激光切割产生的热辐射光的光学装置,该装置可加入激光切割的光路中,不影响激光的正常传输,同时可以对激光穿透和切割过程进行监控。首先,利用ZEMAX进行光路设计,通过特殊的反射镜将热辐射光从激光光路中反射到激光光路外,最终良好地进入到传感器中。然后,利用三维结构设计软件将热辐射光收集光路结构加入到激光切割头的内部。最后,利用TRACEPRO光线追迹功能仿真设计结果,模拟得到切割头实际工作时传感器收集到的热辐射光情况。输出的实际测试曲线显示,该光学装置收集到的热辐射光能够明显判断出激光穿透时间点和切割时的异常情况,表明此设计方法是可行的。该装置可用于提高切割质量和保护昂贵的激光器,具有很好的实用性。An optical device is proposed to collect the thermal radiation generated by laser cutting in this paper.The device can be added into the optical path of laser cutting without affecting the normal transmission of the laser.At the same time,it can monitor the laser penetration and cutting process.First of all,ZEMAX is used to design the optical path.Through a special mirror,the thermal radiation is reflected from the laser light path to the outside,and finally enters a sensor well.Then,the optical device of collecting thermal radiation is added into the laser cutting head by using a 3Dsoftware.Finally,the results are show by using the TRACEPRO.The software can be used to observe the thermal radiation light collected by the sensor when the cutting head is working.From the actual test curve of the output,the optical device can clearly judge the laser penetration time point and the abnormal situation during cutting,which shows that the design method is feasible.The device can be used to improve the cutting quality and protect the expensive laser.

关 键 词：激光 热辐射 ZEMAX 光学装置 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]