The greater the power of LED lamps, the brighter the brightness, is this really the case?

2023-10-27

The greater the power of LED lamps, the brighter the brightness, is this really the case?

author: dede

In daily life, the vast majority of people think that the greater the power of LED lamps, the brighter the brightness; In most cases, this is true on the surface, but how do you delve into it? The answer is no, judging whether the brightness of a lamp is bright enough, it is not the size of the power, but the luminous flux.

Power refers to the work done by an object in a unit of time, unit watts: W, the higher the power of the lamp, the more energy consumed, the more electricity is used. However, this is not a key factor affecting the brightness of the lamp, and can only be used as one of the reference factors.

Luminous flux refers to the amount of light that the human eye can perceive per unit area, unit lumens: LM, the larger the lumens, the higher the brightness, which is the most critical factor that directly determines the brightness of the lamp.

The brightness of the lamp can be calculated, but it is also necessary to know another necessary parameter: the efficiency of light, the unit is lumens/watts: LM/W, different light sources emit the same luminous flux, the less energy consumed, the higher the luminous efficiency. Luminous flux = luminous efficiency * power.