On 10/17/2011 07:36 AM, lists wrote:
UV is certainly harmful to the skin and eyes, the $64,000 question is
whether manufacturers take the issue seriously and provide filter
coatings on the outside of the tubes.
Just to toss another wrench into the gears of life, many if not most
white LEDs are actually UV LEDs with the same type phosphors* in the
plastic as a florescent light has. So they, too, can emit UV.
* some use quantum dots instead. A very few will use multiple LED die
in 3-5 colors, but that's normally only in devices that are color
changing or for video/film lighting.
--
Jerry Durand, Durand Interstellar, Inc. www.interstellar.com
tel: +1 408 356-3886, USA toll free: 1 866 356-3886
Skype: jerrydurand
