{HEAD ~ an image capturing element} configured to receive {TAIL ~ object light} and generate image signals representing an object image 
configured to receive
{ HEAD ~ an image capturing element } configured to receive { TAIL ~ object light } and generate image signals representing an object image
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH