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Discussion in 'MacBook Pro' started by sofianito, Aug 8, 2013.
Lighting systems using light-emitting diodes (LEDs): health issues to be considered
I'm not sure whether that text has been properly translated to english (can't verify as i don't speak french).
For example it sounds wrong to me that the "blue light necessary to obtain white LEDs causes toxic stress to the retina" - even more so, as Philips is explicitly marketing a device with blue LED's for light therapy use.
Granted - i may not be aware of all meanings of "toxic". But if blue light itself would have a toxic effect (as stated in that article) the human race would be extinct by now with all the blue summer skies looked at worldwide...
I read the article in French and it seems to me it is correctly translated. It is an international paper. It has been referenced and commented in ledsmagazine news
As a summary, the 2 main issues with "white LEDs" are the high proportion of blue contained in the emitted light and the luminance of each individual source is 1000 times higher than the visual discomfort level.
The sky is not a source of light while the sun is. Of course, if the sun light that reaches the earth surface had such high blue proportion and luminance, we would likely become blind or we would have to wear special glasses...
1) LED backlit screens aren't something unique to the rMBP, or Apple products at all. Basically every notebook, tablet, TV, etc. that you buy now has LED backlighting.
2) If the concern is with light intensity reaching your eyes, remember that the whole point of an LCD display is that the LCD layer is filtering the raw LED light to produce the final desired colors. Looking at an LCD being backlit by LEDs is very different from looking directly at that LED lighting.
I know I know, you think I am trolling , but I mentioned only the rMBP in the title because I posted in the Macbook Pro forum. Also, the report mentions that all products (not only Apple products...) that use LEDs technology are affected.
I seriously doubt they removed LCD layer when they measured light's luminance and blue proportion of laptops, TVs, tablets,...etc
Did they specifically test LED-backlit LCD displays? The main page you linked to seems to be referring mostly to using LEDs as simple light sources.
I did a quick search in the english pdf file and the only mentions of computers and televisions were in general background information about LEDs.
Well, the report was released in 2010. Maybe Apple and/or other manufacturers solved the LEDs issues, that's why I am asking the question...
I found this big thread discussing Eye strain from LED backlighting in MacBook Pro. There is an interesting report from user Kxtr73...
I originally read it as toxic to the retina display
They say "exposure kills ya."
What are all the different things that occur when you use the MacBook Pro notebooks? There is wifi and other electromagnetic waves, there is electrical currents, now you're mentioning this issue with LEDs (which is interesting and curious to me), what else? Heat?
How dangerous is over exposure to all these things really harmful on the human body? There definitely are people who are definitely affected greatly by our environment as they are more sensitive, some people get heart palpitations, skin rashes and other number of effects. A good test on yourself is to go out to the mountains and when you go out there among just trees, flowing water and fresh air, it makes a huge difference, at least for me my ears definitely stops ringing and I don't feel irritable.
Definitely something legit here, so just stay aware and turn off your devices and wifi routers when you are not using em.