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