医用激光可达发射极限的测量及其不确定度评定

目的本文旨在测量表观光源、连续发射的医用激光的可达发射极限，并评定其不确定度。方法根据GB7247．1—2001《激光产品的安全第一部分：设备分类、要求和用户指南》的要求，测量光路由两个圆孔光栅、毫瓦（瓦）级激光功率计和激光输出终端锁定装置组成，激光输出终端锁定装置用于固定激光终端和探测器的相对位置，并对测量结果进行不确定度评定。结果实现了可达发射极限的测量，同时对不确定度评定的结果进行了分析，对降低医用激光测量不确定度给出了建议。结论本文所述方法对其他类型激光有参考价值，并对GB7247．1—2001的再修订给出了建议。

Measurement and uncertainty evaluation on accessible emission limit of medical laser

Objective In this paper the accessible emission limit （AEL） of medical laser with apparent source and continuous wave are measured, and the measurement uncertainty is also evaluated. Methods According to the GB 7247. 1--2001 （Safety of Laser Products-Partl ：Equipment Classification ,Requirements and User＇s Guide） ,this measuring device was designed to he composed of two parts, a low-power （or a high-power） detector and a fixing tool. The fixing tool was used for the fixation between medical laser handpieee and power detector. Meanwhile, the uncertainty of the measurement results was evaluated. Results We measured the AEL,analyzed the results of laser product＇ s uncertainty and gave the suggestion on the reduction of＂ the uncertainty. Conclusions This paper gives reference for other types of medical laser products, and the advice is given for GB 7247.1--2001 when it will be revised.