I'm making a kind of super solar powered garden light for a harmless stunt.I'm wondering what colour LED I should pick out of several available colours in high intensity LEDs. I'm looking for greatest visibility at a distance at night. A bit of reading in other places suggests that yellow or green is the answer. Before I go ahead and buy some LEDs, what do readers here think?
PH
** You want the garden to be visible, or the LEDs? ** The brightest LEDs by far are white.
So best in both above cases.
.... Phil
Green is highest visible intensity per watt in (if you buy the right one), so if your power supply is constrained, green will probably work best.
Lenses will effect the visibility if a concentrated beam will work in your application get a tight angle LED or use an external lens (eg: cheap magnifier) to concentrate the beam
Love it :)
Did they make the jump from blue LEDs with yellow phosphor, to UV LEDs with white phosphor?
Someone told me the UV/white was more efficient.
As an opportunist purchaser who buys what's cheap - the LEDs I buy have a yellow fringe around the beam pattern.
** Near UV pumped white LEDs exist, but do not ask me where to buy them.
** Not more efficient, but have a better colour rendering index.
Concerns are held about the UV output.
Good for special applications maybe.
.... Phil
Bug zappers.
As far as led's are concerned the three primary colours are the brightest. And of the three they will all look different eye sensitive. Should you want true colour and a good white you will have to have the three balanced. I would suggest looking up online the subject of ilda rgb lights on serch engine. They will give values for the three colours with led's up 100 watt.
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