Such an arrangement of optical elements can effectively correct the aberrations to improve image quality of the system, reduce {HEAD ~ the total track length} of the imaging lens system and achieve {TAIL ~ a wide field} of view 
Such an arrangement of optical elements can effectively correct the aberrations to improve image quality of the system , reduce { HEAD ~ the total track length } of the imaging lens system and achieve { TAIL ~ a wide field } of view
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH