In addition, the dissipation or 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 {HEAD ~ the divided laser beams} to be condensed on {TAIL ~ the lens} 
to be condensed on
In addition , the dissipation or 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 { HEAD ~ the divided laser beams } to be condensed on { TAIL ~ the lens }
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 HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL