Gardner James L
National Measurement Institute, Lindfield, Australia 2070.
J Res Natl Inst Stand Technol. 2007 Jun 1;112(3):129-38. doi: 10.6028/jres.112.010. Print 2007 May-Jun.
Uncertainties in source color measurements with a tristimulus colorimeter are estimated for calibration factors determined, based on a known source spectral distribution or on accurate measurements of the spectral responsivities of the colorimeter channels. Application is to the National Institute of Standards and Technology (NIST) colorimeter and an International Commission on Illumination (CIE) Illuminant A calibration. Detector-based calibration factors generally have lower uncertainties than source-based calibration factors. Uncertainties are also estimated for calculations of spectral mismatch factors. Where both spectral responsivities of the colorimeter channels and the spectral power distributions of the calibration and test sources are known, uncertainties are lowest if the colorimeter calibration factors are recalculated for the test source; this process also avoids correlations between the CIE Source A calibration factors and the spectral mismatch factors.
基于已知的光源光谱分布或色度计通道光谱响应度的精确测量来确定校准因子，以此估算使用三色刺激色度计进行光源颜色测量时的不确定度。该方法应用于美国国家标准与技术研究院（NIST）色度计和国际照明委员会（CIE）A光源校准。基于探测器的校准因子通常比基于光源的校准因子具有更低的不确定度。还对光谱失配因子的计算进行了不确定度估算。当色度计通道的光谱响应度以及校准光源和测试光源的光谱功率分布均已知时，如果针对测试光源重新计算色度计校准因子，则不确定度最低；此过程还避免了CIE A光源校准因子与光谱失配因子之间的相关性。
