According to introducing, the life of the traditional light source performance measurement and evaluation has been standardized, because its life is short and the light source are interchangeable, both incandescent bulbs and energy-saving lamps, light bulb is broken in a won’t influence the continue to use of lamps and lanterns, so don’t usually evaluation of traditional light source of lamps and lanterns of the life. But the long life LED lighting products, through the experimental data for a long time to evaluate its life is clearly not appropriate. Forms of LED lamps and lanterns is at present more at the same time, and the vast majority of LED lamps and lanterns light sources are not interchangeable, to a variety of LED lamps and lanterns, so its life only through the life of the related evaluation to determine.
At present, using accelerated experiments to predict LED lighting products is a very important means of life, its main mechanism is to make the device work stress level higher than the actual stress of the normal use of the experience, effectively stimulate product failure, thus shortening caused by specific failure mechanism of device failure of normal time. But for the LED lamps and lanterns, because its composition is complicated, the factors affecting the service life of the many. Service life itself such as the LED light, LED driver and the environment will affect the service life of lamps and lanterns. And because the technology is still in perfect, the service life of LED lamps and lanterns should be after the technology is relatively perfect evaluation is quite reasonable. However, before the LED technology is relatively perfect, and need to establish a scientific and applicable LED lamps and lanterns of life evaluation method and evaluation model.