角膜曲率计检定能力国家计量比对  

National Measurement Comparison for Verification Ability of Ophthalmometers

作　　者：张吉焱[1] 杨磊[1] 刘文丽[1] 高明亮[1] 曹远航 ZHANG Ji-yan;YANG Lei;LIU Wen-li;GAO Ming-liang;CAO Yuan-hang(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量学报》2023年第9期1390-1394,共5页Acta Metrologica Sinica

基　　金：国家市场监督管理总局质量技术基础能力建设专项(ANL2001);国家市场监督管理总局国家A类计量比对项目(2020-A-02)。

摘　　要：为考察各实验室对角膜曲率计测量量值和出具测量结果的准确一致的程度,2020年至2021年,中国计量科学研究院作为主导实验室,组织实施了角膜曲率计曲率半径检定能力国家A类计量比对项目,共计有33家实验室参加比对,地域覆盖全国15个省、直辖市,具有较强代表性。比对结果采用归一化偏差E n值进行评价,经数据处理和统计分析,33家参比实验室E n绝对值在0~0.85之间,均小于1,各参比实验室的测量结果与参考值之差均在合理的预期范围内。结果表明:各参比实验室角膜曲率计曲率半径检定能力均符合计量标准技术要求,有效保证测量量值的准确、一致、可靠。In order to investigate the accuracy and consistency of measurement values and issued measurement results for ophthalmometers by various laboratories,China National Institute of Metrology,as the pilot laboratory,organized and implemented the national Class A measurement comparison for radius verification ability of ophthalmometer from 2020 to 2021.A total of 33 laboratories participated in this measurement comparison,covering 15 provinces/municipalities directly under the Central Government,and the participating laboratories were highly representative.The comparison results were evaluated by the normalized error E n value.With data processing and statistical analysis,the absolute value of E n of 33 participated laboratories was between 0 and 0.85,all less than 1.The difference between the measurement results and reference values of each participated laboratory was within reasonable expectations.The results showed that the verification ability of radius of curvature in all participated laboratories met the technical requirements of measurement standards,and effectively ensured the accuracy,consistency and reliability of quantity values of ophthalmometers.

关 键 词：计量学 角膜曲率计 曲率半径 计量比对 测量不确定度 归一化偏差 

分 类 号：TB96[机械工程—光学工程]