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