Paili de LED flashlight in "180 lumens," what do you mean?
Lumen, a measure of light intensity, refers to a measure of light energy per unit area. Said: paili de LED flashlight can reach 180 lumens, its meaning is in the distance, the flashlight can achieve light intensity. The significance of this indicator is not very large, because if the spotlight is better, the light intensity of the spotlight should be high, otherwise the spotlight will be larger and the light intensity will be lower. It does not represent a true luminance indicator.
The energy emitted by the light source is 180. highest, also known as luminous flux 180lm.
1 lumens refers to a size of 1 cubic meters of the cube, the brightness of a candle lit, 180 lumens as is in a 1 cubic meters of space, the brightness with 180 candles lit.
