总光通量基准由复合式大型自动分布光度计和发光强度副基准组成，其主体是分布光度计，主要功能是测量光源发光强度的空间分布，并由此自动计算出光源的总光通量和照明工程中所需要的多种参数，给出相应的图表。它是光度计量和照明工程的基础性设备，除用作建立总光通量计量基 The total luminous flux standard by the composite large-scale automatic distribution photometer and luminous intensity of the sub-benchmarks, its main distribution photometer, the main function is to measure the spatial distribution of light emission intensity, and thus automatically calculate the total luminous flux of the light source and lighting projects The required variety of parameters, given the corresponding chart. It is the basis of photometric and lighting engineering equipment, except for the establishment of the total luminous flux measurement base