People become more and more aware of how lighting can affect human well-being and are paying attention to the quality of lighting. For enhancing light quality, researchers found out people have different perception of light sources depending on their age and highlighted the importance of taking age factor into consideration when designing white LED lighting. A study published in The Optical Society (OSA) journal Optics Express investigated the perception variability related to short-wavelength effects and confirmed that the perception of white LEDs is affected by the view...

The research team stresses that sustainable lighting technology should incorporate a new principle that includes (i) energy saving, (ii) long product lifetime and (iii) recyclability of product materials. It highlights the important point that “energy-saving technology is not necessarily environmentally-friendly if it generates lots of harmful electronic waste within a short product lifetime”.