{HEAD ~ The invention} presents {TAIL ~ an optical element} with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element 
presents
{ HEAD ~ The invention } presents { TAIL ~ an optical element } with which an optical head can be configured , in which there is little deterioration of the correctional effect when the objective lens shifts , as well as an optical head and an optical recording / reproducing apparatus using such an optical element
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 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