LED lamp life can not be predicted?

The early LED flashlight, table lamp, such as gifts, the time is not long, life is not prominent. But now LED has been widely used in outdoor and indoor lighting, especially the high-power LED street lamp, its power, high heat, long working hours, life issues are very prominent.

Realistic problem: LED lamp does not live long.

Although LED lighting has has the characteristics of energy saving, environmental protection, long life, easy to control and maintenance free, but ironically, we often hear that the LED drive power of life itself does not become direct drag LED lighting "longevity", which greatly increases the maintenance cost / efficiency; or driving power is not high leading LED lighting energy conversion ratio is not as high, or because the output current ripple is not well controlled and affected the quality of the light, LED lighting green energy-saving advantages of greatly reduced, even affected the market popularity.

LED lamp life can not be predicted?

How to predict the life of LED?

All things have occurred, the development and the process of extinction, although compared to the general light-emitting devices, LED life is relatively long, but also has a certain life. In theory, life can be 100 thousand hours, but in fact can not be known, then the problem is where? If you do not consider the failure of power and drive, the LED life expression for its decay, that is a long time, the brightness is getting dark, until finally extinguished. It is usually defined as the decay time of 30% as its life. So LED's life can not be predicted?