How long is the life of LED lights? Why does it feel darker?

In general, the light source used by LED lights is LED. The ideal life of LED is one hundred thousand hours, but due to the use of packaging materials, application environment, drive power and other problems, usually have a certain quality of LED light source life of about 30,000 hours, good to reach 50,000 hours, even if there is no other factors, LED itself is also light decay, Usually the luminous flux is reduced to 80% of the initial luminous flux is considered to be the life of the LED light source.

So here we can see that it is normal for LED lamps to reduce brightness due to the light source, but it usually takes a long time. The working environment such as high temperature and humidity will also affect the life of the light source, including the optical design of the lamp and other factors.

There is also an important factor affecting the life of LED lamps is the LED drive power supply, may be the LED drive power supply is bad, the light source is good, this is because the components in the drive power have a life, especially the capacitor inside, the good capacitor and the general capacitor price difference is relatively large, and the life of the capacitor directly determines the life of the drive power. LED is a low current power supply, the need to drive the power supply to provide the corresponding current, if the drive power is bad, it may cause flashing lights, or even not bright.