A review of the research on optical imaging systems of large-field medical electronic endoscopes
Medical electronic endoscopes with a large field of view can help doctors obtain a wider field of view,diagnose and treat without moving instruments,reduce surgical risks,improve accuracy,and play an irreplaceable role in minimally invasive surgery.In order to achieve the imaging effect of large field of view,it is common to use aspheri-cal lens for design,but because the off-axis aberration caused by large field of view is not easy to correct and affects the resolution,it is of practical significance to carry out the research of large field of view endoscope imaging system.In this paper,the optical imaging method of large-field medical electronic endoscope is analyzed,and its future devel-opment is analyzed and prospected.