Xu Qinghui: 3 minutes to understand the "efficiency" of lighting

How should the “efficiency” of the luminaire be interpreted? For example, if the T5 grid lamp is used, according to the efficiency of 70% of the lamp and the efficiency of the T5 source is calculated as 104 LPW, even if the electrical loss is not calculated, the whole lamp efficiency of the T5 grille lamp is 72.8 LPW, as opposed to 72.8 LPW. 130... This means... If it is a secondary reflector lamp, the luminaire efficiency is 50%, the light source efficiency is 104 LPW, and the overall lamp efficiency is 52LPW, compared to 130 without calculating the electrical loss. This means...a high light effect!"

This section mentions 7 times of efficiency, which is repeated 3 times, that is, there are 4 terms about efficiency: light source efficiency, lamp efficiency, lamp efficiency, and light efficiency.

- Is Xiaobian used right? Let's look at each one by one:

First, the light source is energized and illuminated. The ability of a light source to convert electricity into light, which is "luminous efficiency," referred to as "light efficiency." If it is a single-finger light source itself, it can also be called "light source light effect", Xiaobian refers to him as "light source efficiency", hehe... it is also considered that he has passed.



Secondly, the light source is not "streaking". It must be equipped with lamps, through reflectors, lenses, hoods... there will be losses, and the light coming out of the lamps is certainly not as much as it used to be. The light from the light source is thorny! Kill the lights! How much is left? This survival rate is "lamp efficiency." Well, Xiaobian uses the word accurately, a good word, like one! ~



Ok, we have learned two terms about efficiency and put them together. What is it? The ability of the entire luminaire to convert electricity into light. This is the "lighting performance", the popular can be called "the whole lighting effect", the small editor called him "the whole lamp efficiency" is a bit problem~

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