Luminescence

Luminescent

Lumines

- this is the phenomenon of glow in a material of a substance in the visible part of the spectrum, after absorption of ultraviolet radiation or particles of the beta, gamma and x-ray ranges. In luminescent radiation there are no emission lines - individual spectral lines; they are described by a continuous spectral curve - a continuous phosphor spectrum. According to this characteristic, fluorescent sources are similar to LED lamps. The fundamental difference is that a fluorescent lamp has a high efficiency (95% at a current of 50 mA), which provides a low switching voltage (2 kV), while LEDs achieve an efficiency of about 25%, requiring an operating current of 30 to 200 mA, at the same time, energy consumption is tens of times higher (2-5 times higher compared to a standard 60 W / 7 W lamp), but due to the difference in energy consumption, they have a much lower efficiency, since power consumption in other areas can reach 2.5 W.