The projecting optical system projects light emanating from {HEAD ~ the luminous flux} synthesizing {TAIL ~ means} on the screen 
The projecting optical system projects light emanating from { HEAD ~ the luminous flux } synthesizing { TAIL ~ means } on the screen
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH