A multi beam scanning apparatus 1, wherein said axially {HEAD ~ symmetric optical system} comprises {TAIL ~ an afocal lens system} 
A multi beam scanning apparatus 1 , wherein said axially { HEAD ~ symmetric optical system } comprises { TAIL ~ an afocal lens system }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL