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