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目前在许多光度测量仪器中,广泛应用光电接收器代替人眼做为光通量的接收转换元件。如用于测定光度的照度计和亮度计中的光电倍增管等。我们知道,光度学是建立在人眼视觉基础上的,而光电元件与人眼特性之间有着很大的区别,这主要表现在两个方面:一是灵敏度有很大差别;二是光谱特性不同。前者可通过计量标准进行标定来加以修正,而后者就是所谓视见函数的校正问题。
Currently in many photometric instruments, widely used optical receivers instead of the human eye as the receiving flux conversion element. Such as the luminometer used to determine the luminosity and the photomultiplier tubes in the luminometer. We know that photometry is based on the human eye vision, and optoelectronic components and the characteristics of the human eye there is a big difference, which is mainly manifested in two aspects: First, there is a great difference in sensitivity; the second is the spectral properties different. The former can be calibrated by metrology standards to be corrected, while the latter is the so-called visual function calibration problem.