Light which is generated by the illuminators is focussed by focussing {HEAD ~ reflectors} 42, 42, into {TAIL ~ a pair} of converging light beams 85, 85 
into
Light which is generated by the illuminators is focussed by focussing { HEAD ~ reflectors } 42 , 42 , into { TAIL ~ a pair } of converging light beams 85 , 85
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH