LED light decay and the ambient temperature
Sep 17, 2021
What is LED light decay?
LED light decay refers to the fact that the light intensity of the LED will be lower than the original light intensity after working a period of time, and the lower part is the light decay of the LED. Generally, LED packaging manufacturers will do the test by lit the LED for continuous 1000 hours with 20MA direct current to compare the light intensity before and after it is lit under laboratory conditions (At room temperature of 25°C).
About light decay, the internal standards are:
The luminous decay is 0 at 1000 hours is, 1% at 3000 hours, 3% at 10,000 hours, and the luminous decay at 50,000 hours is no more than 30%.
The ambient temperature of an LED lamp bead reaches the idea life is 30 degrees. In this way, the temperature of the bracket when the white light LED lamp is working will not exceed 45 degrees. Of course, the higher the temperature, the faster the light decay of the lamp beads.
