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LEDs ruin your eyes  RSS feed

 
Morgan Morrigan
Posts: 1400
Location: Verde Valley, AZ.
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I know the blue keeps me awake too...
Spanish researchers, no details. Assume it is UV ?

http://www.pureenergyblog.com/2013/05/13/1133/8502311_led-lights-ruin-retinas-researchers-say/
 
Andrew Ray
Posts: 165
Location: Slovakia
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Morgan Morrigan wrote:I know the blue keeps me awake too...
Spanish researchers, no details. Assume it is UV ?


Probably UV. The way that "white" light is made with LEDs is to have a (usually) deep blue emitter striking a fluorescent surface that emits "white" light. Wikipedia shows a typical spectrum of such an LED:
https://en.wikipedia.org/wiki/Light-emitting_diode#White_light

The spectrum of the Philips "A-shape" (the funny bulbs with yellow glass parts) is here:
http://www.lighting.philips.com/pwc_li/us_en/connect/tools_literature/downloads/EnduraLED_A19-110726_2.pdf

Unfortunately, it too has a peak in the deep blue range.

Halogen bulbs also have a high UV emission and are therefore put behind UV blocking glass. Perhaps some filter will be developed for LEDs.
 
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