means for directing the incoherent light beam into a plurality of adjacent incoherent light beams which form a continuous line of {TAIL ~ illumination} across {HEAD ~ a portion} of an output surface, 
means for directing the incoherent light beam into a plurality of adjacent incoherent light beams which form a continuous line of { TAIL ~ illumination } across { HEAD ~ a portion } of an output surface ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH