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| A Calibration Method of Flash Dynamic Parameters |
| DING Xiang1,LIU Wen-li1,LI Jiao1,SUN Jie1,SUN Xin2 |
1. National Institute of Metrology, Beijing 100029, China;
2. Shandong Institute of Metrology, Jinan, Shandong 250014, China |
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Abstract A theoretical model of flash measurement is established. A method to calibrate flash dynamic parameters by using luminance step signal is proposed. Error sources of flash duration, dynamic luminance and intensity are analyzed. The method to realize traceability of flash dynamic parameters by static luminance and time parameters is demonstrated. An LED source is used to generate the luminance step signal to test the step response of the flash measurement system. Error components of the flash parameters are calculated and the equations to calculate the uncertainty are derived. It is demonstrated by measuring the Xenon flash parameters and calculating their uncertainties. Results indicate that the proposed method provide a solution to calibration and traceability of the flash dynamic parameters.
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2015, Vol. 36 
