【摘要】 建立了可溯源到国家照度工作标准的有效光强标准装置,该装置由闪光光源、中性滤光片、光度探测器、波形采集和处理单元组成,可定标相关测量仪器。分析了氙灯闪光灯和测试LED闪光灯,LED闪光灯具有上升沿陡峭、稳定性好等优点,可进一步优化作为有效光强标准灯。对影响实验的因素进行了分析,结果表明整套装置测量有效光强的不确定度水平达到2.4%(k=2)。更多还原

【Abstract】 The standard measurement facility of effective luminous intensity traceable to the national illuminance working standard was established.The facility consists of the flashing light source,neutral filter,photometric detector,waveform sampling and processing unit.The facility can be used to calibrate related measuring instrument,paving the way for solving the problem of dissemination and traceability of the effective luminous intensity of flashing light source.Tested examples of Xe and LED flashing lights are analyzed.The rising edge of the LED flashing light is steep,with good stability,which can be further optimized to be used as standard light of effective luminous intensity.The factors influencing the experiment were analyzed,and an uncertainty level of 2.4%(k=2) is obtained for the measurement facility.更多还原