Some LEDS have UV light. That can strain eyes.
They mix colors in the unit to balance color.

Color is based on the physical thickness between layers in
semi. Red was easy - large structure. Blue was tough.
had to be small and special dopant.
The blue might have some UV in it.

The tough ones - I have detected lasers used as LEDS.
That is a problem. They put them in diffusion lenses but
small beams are dangerous.

Martin

On 5/12/2016 8:09 AM, Bill Gill wrote:
On 5/11/2016 3:38 PM, Electric Comet wrote:
On Wed, 11 May 2016 18:03:57 +0000
Spalted Walt wrote:

http://machinedesign.com/blog/3-myth...ounding-leds-0
http://eyebulletin.com/study-says-th...mage-the-eyes/


lets get a group of physicists and engineers together and have them
stare into some leds for a few hours just to prove to us how
harmless they are


Or better yet, let's get some research to find out where the
statement that LEDs can damage your eyes came from. What
documented danger is there?

Bill