The splitting means splits {HEAD ~ light} emanating from {TAIL ~ the illuminating means} into three color light rays of red, green, and blue 
The splitting means splits { HEAD ~ light } emanating from { TAIL ~ the illuminating means } into three color light rays of red , green , and blue
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH