{HEAD ~ A measuring method} for determining the distance between the distal end of an endoscope and an object to be examined uses an optical radar and {TAIL ~ an endoscope}, which comprises a distance measuring device 
{ HEAD ~ A measuring method } for determining the distance between the distal end of an endoscope and an object to be examined uses an optical radar and { TAIL ~ an endoscope } , which comprises a distance measuring device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH