The lamp that I just bought is very bright when used. After a long time of use, the brightness of the lamp slowly becomes low until it is finally extinguished.
We all know that this is the life of the lamp is slowly shortening, and when it is not lit up one day, it will die. Many people can't help but wonder why the lamps have such a process. What is the cause?
In fact, in the end, this is the problem of the light decay of the luminaire. Simply put, the luminaire is the same as the human body. As the service life increases, the functional mechanism of the luminaire is constantly decreasing. Whether it is incandescent, fluorescent, or LED lights, the problem of light decay cannot be avoided.
The light decay of a luminaire means that after a period of illumination, the light intensity of the luminaire will be lower than the original light intensity, and the lower part is the light decay of the luminaire. Different types of lamps cause different causes of light decay.
Ordinary incandescent lighting
For ordinary incandescent lamps, the larger the bubble shell, the smaller the light decay, that is, proportional to the evaporation of tungsten to block the light output. The gas bulb will be relatively light due to the partial gas blocking the evaporation of the tungsten filament.
If the same filament is used for incandescent lamps, it is made in different sizes of bulbs. Relatively speaking, the light decay at the same time point is indeed smaller than that of the small bulb.
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