this is my first post! I`ve recently bought tri led deep (665nm) red luxeons (one of the most efficient). The die turns green after quite short time and I think the color of the light changes slightly, especially in the center and right to leds I see green. I`m pretty sure about the die color and not so sure about the light color change; I feel a bit blinded after looking at die core (of course not directly).
I think it may be due to die temperature, although radiator is cool.
This issue goes even bigger if I use 20mm triled lenses (carclo). The dies go green in a short moment. Im not sure, are the dies maybe getting to hot? The color of light with lenses is not bad, the red is more concentrated, but it`s possible that I see some green.
I`m driving the leds with safe 500mA.
Could someone of you guys (and girls) tell me if this is normal? I would like to run them at nice deep red.