Therefore, even if {HEAD ~ the collimator lens} 7 is mounted in a different manner, or to {TAIL ~ a separate member} for a reason in design or the like, the above described effect can be similarly achieved 
Therefore , even if { HEAD ~ the collimator lens } 7 is mounted in a different manner , or to { TAIL ~ a separate member } for a reason in design or the like , the above described effect can be similarly achieved
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH