Re:Some cities are taking another look at LED lighting after...
by keenerd on Sunday September 25, 2016 @02:59PM
(#12576773)
405nm is violet. 360nm is UV. Yes, we are sensitive to it. But white LEDs emit none* of either.
*Future generation of LEDs might shift from indigo (445nm) to violet to improve color rendition, but cost will go way up and efficiency will go way down so I doubt it will be common. And some stores are already adding UV LEDs to their lighting in order to make florescents really pop.
*Future generation of LEDs might shift from indigo (445nm) to violet to improve color rendition, but cost will go way up and efficiency will go way down so I doubt it will be common. And some stores are already adding UV LEDs to their lighting in order to make florescents really pop.
Edit: and a reference, the datasheet for the latest and greatest XHP50 LED: http://www.cree.com/~/media/Files/Cree/LED-Components-and-Mo...
Spectral charts are on page 11. Peak emission is at 445nm. Beyond 415nm there is nothing.
Cheaper LEDs will use a longer wavelength of blue, typically around 475nm.