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医用激光可达发射极限的测量及其不确定度评定

Measurement and uncertainty evaluation on accessible emission limit of medical laser

作者: 王建宇  戎善奎  李佳戈  任海萍 
单位:中国食品药品检定研究院(北京100050)
关键词: 医用激光;测试;不确定度 
分类号:
出版年·卷·期(页码):2013·32·6(583-586)
摘要:

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

GB 7247.1—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GB 7247.1—2001的再修订给出了建议。

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-Part1:Equipment

Classification,Requirements and User’s Guide),this measuring device was designed to be

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 handpiece and power detector. Meanwhile,

the uncertainty of the measurement results was evaluated. ResultsWe 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.

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