Uncertainty Analysis of Luminous Flux Measurements of a Certain Type of Filament Bulb for Motor Vehicles
ZHANG Meng
GONG Jiajie
TAN Gongwei
WU Huatang
LIU Ran
CHEN Ping
Abstract：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.
Keywords：integrating sphereluminous fluxfilament bulbvehicle lampsmeasurement uncertainty
Publication Date：2024-02-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 7-11 )