Image of light in the vicinity of the focus of the projection lens 68 is projected upside down and left side to be right side at {HEAD ~ the forward} of {TAIL ~ projection lens} 68 
of
Image of light in the vicinity of the focus of the projection lens 68 is projected upside down and left side to be right side at { HEAD ~ the forward } of { TAIL ~ projection lens } 68
OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL OTH