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