Uncertainty Analysis of Luminous Flux Measurements of a Certain Type of Filament Bulb for Motor Vehicles
The purpose of this paper is to analyze the uncertainty of the luminous flux measurement results during type approval tests of a filament bulb,a light source for automotive lamps.Based on the integrating sphere luminous flux test system,the factors affecting the uncertainty of the results are analyzed in terms of equipment,environment,and so on.Measurement uncertainty was evaluated using a measurement model,and Type A and Type B uncertainties were calculated and combined to obtain the expanded uncertainty at a certain confidence interval.The evaluation process can be used as a reference for those involved in type approval of automotive lamps.
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