In another article on this site (MA090) deal with the influence of illumination with excess blue in our circadian rhythm, affecting our health and causing discomfort as the loss of sleep. Again this subject comes up in interesting article published on the website of Mouser Electronics that comment to follow, but the reader can read in its entirety at the link we give.
No need to say that led lighting is the future. Much more compact, cheap and efficient, these components can produce more light for less watts and last much longer.
In addition, the lights from LEDs can be modulated or controlled in brightness over a wide dynamic range. Make public lights brightness increase at dusk and dawn is diminish the possibilities to take advantage of this feature.
Even optical Internet connection can be obtained by modulating the light emitted at a frequency too high.
However, with the possibility of light terms of any color from the combination of the light produced by 3 LEDs (RGB) of different colors, also arise some problems that we have discussed in other articles of the site as in ART1435 and even analyzing the operation of LEDs in ART809.
However, have in article that the fact that there is a strong blue component in this lighting can bring some negative impacts for humans and in this article from Mouser written by Paul Golata the problem is discussed with some additional items that we do not take in our article in the past.
According to the AMA (American Medical Association) there is a concern with the effects of this type of lighting in humans. A document was published by the Association in order to reduce the dangers of intense streetlight. The reader can access it at:
According to this document, the effects are not limited to humans, as we have already discussed how sleep loss by inhibiting the production of melatonin as well as for animals and even plants.
Some animal species such as birds, fish and insects require in certain moments of dark environments at certain times. In the United States parks and biological reserves already adopt lighting systems studied not to cause impact on species that harbor.
Another point discussed in the documentation of the AMA and also quoted in the article the Mouser is the excess blue in the light causes glare reducing visual acuity and vision adaptation to changes in light intensity. It is for this reason that the tunnels are illuminated with light yellow.
The impact when we came out of the tunnel for the ambient light and vice versa is less, because your eyes adapt more quickly to the yellow light of another color.
In an article published on this site and that we cite the use of richer in yellow lighting is highly recommended in homes and in areas that don’t require a more intense lighting, both for the sake of comfort as even health.
In the article the Mouser have an indication of the concern about this fact with a WaveMax technology products of Cree (our site) characteristics that take into account this problem that our world faces and have to adapt to new technology.
To top it off, we observe that in the past the technologies were created without much concern for the environment and human health.
When Edison created your filament lamp he might never think about the impact that it would have on the environment and on human health.
Many say that at that time there were no such problems. In fact, there were many and, as the history of technology shows us, that there was no concern with them.
When the clock dials and switches phosphorescent wall mirrors based on radio, no one bothered with the fact that radiation is deadly in the long run. The problem existed, but no one noticed or was aware of it.
And what not to say lead water pipelines which were used in old Rome. To say that the fall of the Roman Empire was that, because the lead cause lead poisoning which makes people soft.
When the barbarians invaded Rome, soldiers were indolent incapable of defending the city due to lead poisoning.
Anyway, at least today there is concern about the health and the environment.