斜光束对校正滤色器校正精度的影响

当用测色仪器按照国际照明委员会规定的条件测量物体颜色时 ,若样品与探测器之间的距离不够大 ,则斜光束会透过校正滤色器而被探测器接收 ,这时对应探测器某点校正滤色器的当量透射比可以用修正计算式求得。以“Y”校正滤色器为例 ,从计算结果和实验说明了斜光束对校正滤色器透射比的影响。

Influence of oblique beam on accuracy of correction color filter

As the color is measured by the instrument of testing color according to the condition prescribed by CIE, oblique beam will be detected by a detector through correction color filter if the distance between a sample and the detector is not long enough In this case, the equivalent spectral transmittance of correction color filter corresponding to a certain point of detector can be calculated by revised formula Taking Y correction color filter as an example, the influence of oblique beam on correction accuracy of correction color filter is shown by the result of calculation and experiment