The new LED strip is very bright, why does it dim after a while
Everyone must have such a life experience. The LED light strip just bought is always very bright, but after a period of time, the light strip will get darker and darker. What is the reason?
Lighting products, there will be a lamp failure, what is the lamp failure?
It refers to the process in which the light intensity of lamps and lanterns can be gradually reduced after such a period of working time, and cannot be recovered. Some of the reduced enterprises are called light decay of LEDs.
LED Neon Strip
Luminous decay generally refers to its luminous flux. When charging the surface of the photosensitive drum, with the accumulation of charges on the surface of the photosensitive drum, the potential also continues to rise, and then reaches the "saturation" potential, which is a high potential. The surface potential will decrease with the passage of time in society. Generally, the potential during management work is lower than the potential in China. The process that this potential can be reduced over time and naturally is called the "dark decay" process. When the photosensitive drum is scanned and exposed, the potential of the dark area (the unexposed part of the photoconductor surface) is still in the dark decay process; the carrier density on the surface of the light guide layer increases rapidly, the electrical conductivity increases rapidly, the charge disappears rapidly, and the photoconductor rapidly disappears. The surface potential drops rapidly. It is called "light decay", and it slows down after Z.
Generally, LED light strip packaging manufacturers do the test under laboratory conditions (at room temperature of 25 ℃), and continuously light the LED with 20MA direct current for 1000 hours to compare the light intensity before and after lighting.
Luminous attenuation calculation method:
Luminous decay in N hours = 1- (Luminous flux in N hours / Luminous flux in 0 hours)
The longer the LED light strip is used, the darker it will be, because the LED light strip will have the phenomenon of light decay.
The degree of light decay of light strip products produced by various manufacturers in the current society is different. High-power LED light strips usually have light decay in enterprises, which is directly related to the temperature that can be generated during the use and management of light strips. , mainly determined by chips, phosphors, packaging, etc.
