In addition, the dissipation or {TAIL ~ loss} of the laser beam due to the division is prevented by increasing the number of the reflection planes of the polygon mirror to enable the divided laser beams to be condensed on {HEAD ~ the lens} 
In addition , the dissipation or { TAIL ~ loss } of the laser beam due to the division is prevented by increasing the number of the reflection planes of the polygon mirror to enable the divided laser beams to be condensed on { HEAD ~ the lens }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD