L.E.D.'s

[Karl Helmer Torvmark]

On Sun, 3 Aug 1997, John Greczula wrote:

> I apologize if this is a redundant or "silly" question, but:
> 
> Does anyone know if there is such a thing as a L.E.D. which can produce
> four colours of light?
> 
> I know there are bi-colour types which can produce three.
> 
> Any info would be much appreciated.
>  
> John Greczula
> 

I've seen RGB type LEDs, that have one red, one green and two blue LEDs in
one package. (They have to use two blue ones,  because they are not as
bright as ordinary LEDs). These are pretty expensive though.

Since they are RGB they can produce (theoreticly) all colors.

Karl H.