Although the left area L2, right area L3, and {TAIL ~ thickness L4} are set up in the direction of {HEAD ~ the detection line} in setting a partial image in such a manner as shown in FIG 8, there is no limitation on the sizes thereof 
Although the left area L2 , right area L3 , and { TAIL ~ thickness L4 } are set up in the direction of { HEAD ~ the detection line } in setting a partial image in such a manner as shown in FIG 8 , there is no limitation on the sizes thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD 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