Original SVG version of this image: <a class="external free" href="https://commons.wikimedia.org/wiki/File:Red-YellowGreen-Blue_LED_spectra.png">https://commons.wikimedia.org/wiki/File:Red-YellowGreen-Blue_LED_spectra.png</a>
<a href="//commons.wikimedia.org/w/index.php?title=User:Cpu20&amp;action=edit&amp;redlink=1" class="new" title="User:Cpu20 (page does not exist)">Tijl Schepens</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>