10 Nov
2011
10 Nov
'11
12:18 p.m.
You mean
they're not white LEDs, but narrow-spectrum LEDs exciting a
phosphor such as is used in a fluorescent tube?
I was wondering how they got the flat spectrum....
Yup, that's the genius behind them. They're basically fluorescent
lamps using an LED as the UV source instead of mercury vapor. Though I'm told there are additional tricks they employ
to even out the
spectrum now as well. Never bothered to look into it.
Interesting. I wonder how continuous it really is.
LEDs in general tend to emit an astonishingly narrow bandwidth, so
Which is not suprising when you consider how they work.
getting white out of them is quite an achievement.
Well, it would be if they'd managed it without cheating (using the
phosphor) :-)
-tony