Evaluation of the uncertainty of the measurement error of transmittance meter

With the rapid development of our country's economy, the number of motor vehicles has continued to grow rapidly, and the safety of driving has become an important issue[1]. The lack of vision and vision of the driver will directly affect the safety of driving. The transmittance meter is used to measure the visible light transmission ratio of the glass in the driver's view area. It is great important whether the indication is accurate or not. In this paper, the standard neutral filter is chosen as the standard, and the uncertainty of the measurement error of transmittance meter is evaluated and discussed.