一般V（A）失配指数f_1^'量化了光度计的光谱响应度s（A）和光谱发光效率函数V（A）之间的失配。简要回顾其历史发展，解释当前定义的原因，以及哪些调整可能对未来有用。详细描述了当前定义的属性。在未来，很可能会使用白色LED光源作为参考来校准光度计。这可能需要对一般V（a）失配指数进行更充分的定义，方法是使用f_1 ^中的不同归一化来计算光度计的光谱响应度，或者引入不同类型的函数来评估失配。 另一方面，彩色LED的测量也变得越来越重要。白色和彩色光源的单一质量指数是否足够

The general V(A) mismatch index, f_1^' quantifies the mismatch between the spectral responsivity of a photometer, s(A), and the spectral luminous efficiency function, V(A). A short review of its historical development is given to explain the reasons for the current definition and which adjustments may be useful for the future. The properties of the current definition are described in detail.It is very likely that in the future, calibration of photometers will be done with a white LED light source as reference. It might involve the need for a more adequate definition of the general V(A) mismatch index, either by using a different normalization in f_1^'   for the spectral responsivity of the photometer or by introducing a different type of function for assessing the mismatch. On the other hand, the measurement of coloured LEDs is also becoming increasingly important. Is a single quality index for white and coloured light sources sufficient