60|A FONDO “Repeatedly, they incur in conceptual errors in the use of the word effectiveness, in the literature of manufacturers, importers and providers; and what is more common, the identification or equivalence between the effectiveness of a luminary or module with the effectiveness of the diode.” Because there is a wealth of technical explanations that justify these discrepancies combined, we would like to put the magnifying glass on their origin: - If we consider a luminary with a high yield LED (for example, the one for daily use, no need to look for special LEDs) power of 600mA and minimal losses in the configuration of the final product then, according to the following outline we find minimal losses that are of obligatory application, which justifies the discrepancy between Diode Effectiveness and Luminary or Module Effectiveness: This analysis is irrefutable from any point of view: technical, of design, commercial and even academic. I know that the information is within reach of any specialized technician, but even so, it is extraordinarily common to find in technical and techno-commercial literature errors like this: Placing the effectiveness of the diode in the information of luminary. Indicating the value of the luminous flow by multiplying the potency by the effectiveness of the diode. Forgetting to include the losses of secondary optics. Forgetting to include the losses of the driver. Indicate data obtained at color temperatures of 5000K or 6000K: more flow, but more photobiological risk. Indicate data of test conducted with more effective LED than the ones that will be used. Asterisks, tiny footnotes... Like these, there are countless inaccuracies that lead to creating confusion in the customers. Thus, the consumer must demand a series of tests that will determine, unequivocally, the truth of the devices, keeping in mind that lighting is closely linked to safety. The additional information needed to verify the information stated in the data sheets should be, at least: Photometric tests performed in an independent laboratory, certified by ENAC, preferably, that will