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Share what we know, what we learn and what we recommend.
Share what we know, what we learn and what we recommend.
Traditionally, classrooms have been lit by fluorescent lamps that emit a single color of light. With the development of white LED technology in recent years, fluorescent lamps are gradually replaced by LEDs, however one issue that has been overlooked by most of people is the spectra of LEDs. Most of LEDs are triggered by blue die (450-460nm), in order to increase its efficacy and brightness, blue light emits a high volume of radiant energy which appears a blue peak on the spectrum, even for high CRI LEDs.Students exposed to blue light for long time can be more or less discomfortable to their eyes.
In addition, it has excellent color rendering capability, not only CRI(Ra 98) but also new metric TM30-18(Rf 98, Rg 101).
Finally, I believe that in the near future, the white LED with spectrum of sunlight will be widely used and also it will be Tunable White.