The invention presents an optical element with which {HEAD ~ 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 {TAIL ~ an optical recording/reproducing apparatus} using such an optical element 
The invention presents an optical element with which { HEAD ~ 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 { TAIL ~ an optical recording / reproducing apparatus } using such an optical element
OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH