Lighting is no longer just turning on a lamp. Solid State Lighting allows reaching high energy savings and visualperception, but the path to success was not easy: in the early years when LED were available on the market, severalconcerns slowed down their widespread implementation. The large spread of Lighting Systems based on LED arrivedonly when products quality increased thanks also to the development of new metrology paradigms able to certify LEDperformances peculiarities. Currently LED promises to widespread in every lighting application increasing not onlyenergy savings, but night-time safety, health and wellbeing thanks to lighting systems based on connectivity and smartcontrols, but new design paradigms and metric headed to new objectives are necessary, therefore there will be no need tomeasure only energetic and light performances. We are moving toward an approach more sensitive to Human Needs:energy savings and light efficiency are of no more the only interest to focus on, we need to measure performance of alighting system in terms of not only SI quantities. We need now a consolidated metrology and design approach to SmartSystem for complexity and suitable to compare lighting quality in term of human perception and wellbeing.
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