{HEAD ~ The first main body} and the first lens portion are made of a same polymer material having a lower melting point and {TAIL ~ higher fluidity} than polyether imide 
{ HEAD ~ The first main body } and the first lens portion are made of a same polymer material having a lower melting point and { TAIL ~ higher fluidity } than polyether imide
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH