The luminous efficiency of LED itself has reached more than 130lm/W, so the overall luminous efficiency of LED ceiling lamp can reach 100lm/W. And this efficiency is growing every year. It is estimated that the luminous efficiency of LED itself will reach 240lm/W by 2020. High light efficiency means energy conservation. According to the measured results, an 8W LED can replace a 32W ceiling lamp. Electric power can be saved more than 4 times.
