Jopet
Kertész bálvány
A ~ 25 lm/W (meglehetősen kevés) fényhasznosításra kerestem magyarázatot. Itt lesz az, de ezt a részt csak nagyjából értem.
The first change is the brightness of LEDs. In general, the emphasis is placed on only luminous efficacy (lm/W) and it is often advertised as if “LED with high luminous efficacy= bright lighting system”. But here, we must not ignore the numerical trick of “LED’s luminous efficacy becoming higher if less power is used to emit light”. In addition, the light emitted by LED travels more in a straight line. Therefore, the light intensity (lx) is high only immediately beneath the LED while the light intensity around it is significantly low. For these reasons, many lighting systems installed for an aquarium tank do not offer sufficient brightness even though their luminous efficacy (lm/W) and light intensity (lx) on the labeling/specifications are high.