Luminous efficiency is a parameter of a light source, it is the ratio of luminous flux to power. Depending on the situation, this power can refer to the radiant flux output by the light source, or the energy provided by the light source (which can be electrical energy, chemical energy, etc.). The power in the luminous efficiency usually depends on the situation, but in many cases it is unknown. The luminous efficiency of the power supply is one type: measuring the efficiency of the visible light emitted by the light source provided by the electric energy, that is, the ratio of the radiant flux to the input electric power. Radioluminescence efficiency description: The efficiency of the light source to provide visible light, that is, the ratio of luminous flux to radiant flux. Due to the structure of the human eye, not all wavelengths of light have the same visibility. The spectrum of infrared light and ultraviolet light does not affect the luminous efficiency. The luminous efficiency of the light source is related to the light source's ability to convert energy into electromagnetic radiation and the human eye's ability to perceive the emitted radiation.
