The optical lens 30 includes a beam splitter arranged between the imaging device 20 and the first imaging lens 40 that {HEAD ~ the image beam C} from the imaging device 20 may emit through {TAIL ~ the optical lens} 30 
emit through
The optical lens 30 includes a beam splitter arranged between the imaging device 20 and the first imaging lens 40 that { HEAD ~ the image beam C } from the imaging device 20 may emit through { TAIL ~ the optical lens } 30
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 OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH