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soloco said:
Has anyone made an array of Nichia LEDS of all different colors?
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I was think it would be interesting to have each LED a different color that could combine to make a nicer white light.
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All one would need is RGB - Red, Green and Blue.
The main problem is the LEDs being discrete - so are discrete sources/points of light, and the "blending" of the light.
Beyond a cetain distance - past the eye's resolving ability the light may then seem white - but within the eyes' resolving range one will be able to see the discrete colors.
This would be true with the light illuminating an object - used close one probably would see the discrete color (banding), but with the light far away enough, then perhaps one would see the light as "white".
I did an experiment using a cheapo multi-colored LED pen which had red, green and blue LEDs - with photos - in this thread:
LED Colors and Vision (pics)
A better proposition might be the use of RGB LEDs - which would have the light sources much closer together -
However the uses of RGB LEDs so far have been in novelty lights - changing/strobing through the colors, and not the potentially useful flashlight that could be switched between white, red, green, blue, and any combination of colors.......