{HEAD ~ The focus} of {TAIL ~ the projection lens} 68 is located between the second aperture 65 b and the projection lens 68 
of
{ HEAD ~ The focus } of { TAIL ~ the projection lens } 68 is located between the second aperture 65 b and the projection lens 68
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH