{HEAD ~ an objective lens} for focusing {TAIL ~ beams} onto an optical disc wherein the beams proceed respectively toward the optical disc via the beam splitter after being reflected by the optical member and the reflecting member; and 
for focusing
{ HEAD ~ an objective lens } for focusing { TAIL ~ beams } onto an optical disc wherein the beams proceed respectively toward the optical disc via the beam splitter after being reflected by the optical member and the reflecting member ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH