Estimation of calibration uncertainties in the detector-based photometric calibrations

Uncertainty evaluations in the photometric calibrations and established uncertainty budgets at National Metrology Institute of Turkey (TUBITAK-UME) E,) are presented. Uncertainty analyses are cover calibrations of the luminous intensity, the luminous flux and the luminance properties of the optical fight source. The combined uncertainty in each photometric calibration was evaluated using developed uncertainty models. The degrees of freedom in each input and output quantities were also determined. The coefficient of uncertainty contribution h(y, x(i)) was finally determined to present the dominant and less important contributions.