There are two primary ways of producing high intensity white-light using 
LEDs. One is to use individual LEDs that emit three primary colors[48]—red, 
green, and blue—and then mix all the colors to produce white light. The 
other is to use a phosphor material to convert monochromatic light from a 
blue or UV LED to broad-spectrum white light, much in the same way a 
fluorescent light bulb works.

As mates tik pirma varianta.

O bet taciau jeigu Dainiusas turejo omeny antra varianta tai tas anot 
straipsnio netgi UV vercia i balta sviesa:)))(to convert monochromatic light 
from a blue or UV LED to broad-spectrum white light)

Virgelis

P.S. Tikrai dabar nesigilinsiu kur ir kiek naudojamas antrasis 
variantas.:))) Peace

"virgelis" <1@1.lt> wrote in message 
news:ho9maa$pcf$1@trimpas.omnitel.net...
> nu ir kur ten iki 400nm yra?
>
> P.S.Nykstamai arba salyginai mazu dydziu neziurekime. Nes as salininkas 
> kad nera absoliuciu dalyku, taigi sutiksiu kad UV ten spinduliuoja, bet 
> jau LABAI mazai.
>
> "saimhe" <oh.no@oh.my> wrote in message 
> news:ho9ktf$nvq$1@trimpas.omnitel.net...
>>> Mano ziniomis (nu ne tokios jos jau visiskai mazos:)))), ner ten 
>>> liuminoforo.
>>
>>  Daugumoje baltų -- yra. 
>> http://en.wikipedia.org/wiki/LED#Phosphor-based_LEDs
>>
>> -- 
>>  saimhe
>
>