Das CIE-Dreieck ist ein 1976 festgelegter Farbraum. In ihm finden sich alle theoretisch sichtbaren Farben. Mittels Koordinaten kann jede beliebige Lichtfarbe eindeutig angegeben werden.
Alle Spektralfarben liegen im Randbereich des CIE-Dreiecks.
Fachinfo:
Wenn die XYZ-Werte einer Wellenlänge bekannt sind, können diese in CIE-Koordinaten mit Hilfe folgender Formel umgerechnet werden:
X = x / x+y+z
Y = y / x+y+z
<center>
</center><div align="center"> <table border="1" cellspacing="0" cellpadding="2" width="487" bordercolor="#C0C0C0" > <tr > <td align="center"> <b>Wellenlänge</b></td> <td align="center" > <b>x</b></td> <td width="85" align="center" > <b>y</b></td> <td width="85" align="center" > <b>z</b></td> <td align="center" > <b>CIE X</b></td> <td align="center" > <b>CIE
Y</b></td> </tr> <tr > <td width="84" align="center" > <b> 360nm</b></td> <td width="80" align="center" > 0,00012990</td> <td align="center" > 0,00000392</td> <td align="center" > 0,00060610</td> <td width="59" align="center" > 0,176</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 370nm</b></td> <td width="80" align="center" > 0,00041490</td> <td align="center" > 0,00001239</td> <td align="center" > 0,00194600</td> <td width="59" align="center" > 0,175</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 380nm</b></td> <td width="80" align="center" > 0,00136800</td> <td align="center" > 0,00003900</td> <td align="center" > 0,00645000</td> <td width="59" align="center" > 0,174</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 390nm</b></td> <td width="80" align="center" > 0,00424300</td> <td align="center" > 0,00012000</td> <td align="center" > 0,02005001</td> <td width="59" align="center" > 0,174</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 400nm</b></td> <td width="80" align="center" > 0,01431000</td> <td align="center" > 0,00039600</td> <td align="center" > 0,06785001</td> <td width="59" align="center" > 0,173</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 410nm</b></td> <td width="80" align="center" > 0,04351000</td> <td align="center" > 0,00121000</td> <td align="center" > 0,20740000</td> <td width="59" align="center" > 0,173</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 420nm</b></td> <td width="80" align="center" > 0,13438000</td> <td align="center" > 0,00400000</td> <td align="center" > 0,64560000</td> <td width="59" align="center" > 0,171</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 430nm</b></td> <td width="80" align="center" > 0,28390000</td> <td align="center" > 0,01160000</td> <td align="center" > 1,85600000</td> <td width="59" align="center" > 0,132</td> <td align="center" > 0,005</td> </tr> <tr > <td width="84" align="center" > <b> 440nm</b></td> <td width="80" align="center" > 0,34828000</td> <td align="center" > 0,02300000</td> <td align="center" > 1,74706000</td> <td width="59" align="center" > 0,164</td> <td align="center" > 0,011</td> </tr> <tr > <td width="84" align="center" > <b> 450nm</b></td> <td width="80" align="center" > 0,33620000</td> <td align="center" > 0,03800000</td> <td align="center" > 1,77211000</td> <td width="59" align="center" > 0,157</td> <td align="center" > 0,018</td> </tr> <tr > <td width="84" align="center" > <b> 460nm</b></td> <td width="80" align="center" > 0,29080000</td> <td align="center" > 0,06000000</td> <td align="center" > 1,66920000</td> <td width="59" align="center" > 0,144</td> <td align="center" > 0,030</td> </tr> <tr > <td width="84" align="center" > <b> 470nm</b></td> <td width="80" align="center" > 0,19536000</td> <td align="center" > 0,09098000</td> <td align="center" > 1,28764000</td> <td width="59" align="center" > 0,124</td> <td align="center" > 0,058</td> </tr> <tr > <td width="84" align="center" > <b> 480nm</b></td> <td width="80" align="center" > 0,09564000</td> <td align="center" > 0,13902000</td> <td align="center" > 0,81295010</td> <td width="59" align="center" > 0,091</td> <td align="center" > 0,133</td> </tr> <tr > <td width="84" align="center" > <b> 490nm</b></td> <td width="80" align="center" > 0,03201000</td> <td align="center" > 0,20802000</td> <td align="center" > 0,46518000</td> <td width="59" align="center" > 0,045</td> <td align="center" > 0,295</td> </tr> <tr > <td width="84" align="center" > <b> 500nm</b></td> <td width="80" align="center" > 0,00490000</td> <td align="center" > 0,32300000</td> <td align="center" > 0,27200000</td> <td width="59" align="center" > 0,008</td> <td align="center" > 0,538</td> </tr> <tr > <td width="84" align="center" > <b> 510nm</b></td> <td width="80" align="center" > 0,00930000</td> <td align="center" > 0,50300000</td> <td align="center" > 0,15820000</td> <td width="59" align="center" > 0,014</td> <td align="center" > 0,750</td> </tr> <tr > <td width="84" align="center" > <b> 520nm</b></td> <td width="80" align="center" > 0,06327000</td> <td align="center" > 0,71000000</td> <td align="center" > 0,07824999</td> <td width="59" align="center" > 0,074</td> <td align="center" > 0,834</td> </tr> <tr > <td width="84" align="center" > <b> 530nm</b></td> <td width="80" align="center" > 0,16550000</td> <td align="center" > 0,86200000</td> <td align="center" > 0,04216000</td> <td width="59" align="center" > 0,155</td> <td align="center" > 0,806</td> </tr> <tr > <td width="84" align="center" > <b> 540nm</b></td> <td width="80" align="center" > 0,29040000</td> <td align="center" > 0,95400000</td> <td align="center" > 0,02030000</td> <td width="59" align="center" > 0,230</td> <td align="center" > 0,754</td> </tr> <tr > <td width="84" align="center" > <b> 550nm</b></td> <td width="80" align="center" > 0,43344990</td> <td align="center" > 0,99495010</td> <td align="center" > 0,00875000</td> <td width="59" align="center" > 0,302</td> <td align="center" > 0,692</td> </tr> <tr > <td width="84" align="center" > <b> 560nm</b></td> <td width="80" align="center" > 0,59450000</td> <td align="center" > 0,99500000</td> <td align="center" > 0,00390000</td> <td width="59" align="center" > 0,373</td> <td align="center" > 0,624</td> </tr> <tr > <td width="84" align="center" > <b> 570nm</b></td> <td width="80" align="center" > 0,76210000</td> <td align="center" > 0,95200000</td> <td align="center" > 0,00210000</td> <td width="59" align="center" > 0,444</td> <td align="center" > 0,555</td> </tr> <tr > <td width="84" align="center" > <b> 580nm</b></td> <td width="80" align="center" > 0,91630000</td> <td align="center" > 0,87000000</td> <td align="center" > 0,00165000</td> <td width="59" align="center" > 0,512</td> <td align="center" > 0,487</td> </tr> <tr > <td width="84" align="center" > <b> 590nm</b></td> <td width="80" align="center" > 1,02630000</td> <td align="center" > 0,75700000</td> <td align="center" > 0,00110000</td> <td width="59" align="center" > 0,575</td> <td align="center" > 0,424</td> </tr> <tr > <td width="84" align="center" > <b> 600nm</b></td> <td width="80" align="center" > 1,06220000</td> <td align="center" > 0,63100000</td> <td align="center" > 0,00080000</td> <td width="59" align="center" > 0,627</td> <td align="center" > 0,372</td> </tr> <tr > <td width="84" align="center" > <b> 610nm</b></td> <td width="80" align="center" > 1,00260000</td> <td align="center" > 0,50300000</td> <td align="center" > 0,00034000</td> <td width="59" align="center" > 0,666</td> <td align="center" > 0,334</td> </tr> <tr > <td width="84" align="center" > <b> 620nm</b></td> <td width="80" align="center" > 0,85444990</td> <td align="center" > 0,38100000</td> <td align="center" > 0,00019000</td> <td width="59" align="center" > 0,692</td> <td align="center" > 0,308</td> </tr> <tr > <td width="84" align="center" > <b> 630nm</b></td> <td width="80" align="center" > 0,64240000</td> <td align="center" > 0,26500000</td> <td align="center" > 0,00005000</td> <td width="59" align="center" > 0,708</td> <td align="center" > 0,292</td> </tr> <tr > <td width="84" align="center" > <b> 640nm</b></td> <td width="80" align="center" > 0,44790000</td> <td align="center" > 0,17500000</td> <td align="center" > 0,00002000</td> <td width="59" align="center" > 0,719</td> <td align="center" > 0,281</td> </tr> <tr > <td width="84" align="center" > <b> 650nm</b></td> <td width="80" align="center" > 0,28350000</td> <td align="center" > 0,10700000</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,726</td> <td align="center" > 0,274</td> </tr> <tr > <td width="84" align="center" > <b> 660nm</b></td> <td width="80" align="center" > 0,16490000</td> <td align="center" > 0,06100000</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,730</td> <td align="center" > 0,270</td> </tr> <tr > <td width="84" align="center" > <b> 670nm</b></td> <td width="80" align="center" > 0,08740000</td> <td align="center" > 0,03200000</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,732</td> <td align="center" > 0,268</td> </tr> <tr > <td width="84" align="center" > <b> 680nm</b></td> <td width="80" align="center" > 0,04677000</td> <td align="center" > 0,01700000</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,733</td> <td align="center" > 0,267</td> </tr> <tr > <td width="84" align="center" > <b> 690nm</b></td> <td width="80" align="center" > 0,02270000</td> <td align="center" > 0,00821000</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,734</td> <td align="center" > 0,266</td> </tr> <tr > <td width="84" align="center" > <b> 700nm</b></td> <td width="80" align="center" > 0,01135916</td> <td align="center" > 0,00410200</td> <td align="center" > 0,00000000</td> <td width="59" align="center" > 0,735</td> <td align="center" > 0,265</td> </tr> </table>Die vollständige Liste ALLER sichtbaren Wellenlängen als CIE-Koordinaten gibt es hier:
http://www.leds.de/daten/cie_xyz_wellenlaenge.htm (600kB)
ALLE Wellenlängen sind so im CIE-Dreieck abbildbar.