高度屈光不正人眼的视网膜自适应成像系统  

Large refractive error adaptive optical retinal imaging system

作　　者：刘丽丽 邓玉福[1] 

机构地区：[1]沈阳师范大学物理科学与技术学院,辽宁沈阳110034

出　　处：《红外与激光工程》2012年第12期3331-3335,共5页Infrared and Laser Engineering

基　　金：辽宁省自然科学基金(20102191);辽宁省教育厅科研项目(L2010465);沈阳科学技术计划项目(F10214100)

摘　　要：为了更好的利用液晶自适应成像系统进行具有较大屈光不正人眼像差校正及视网膜的成像,建立了一套基于低阶像差自补偿的眼底自适应成像系统。该系统采用基于人眼调节特性的光学系统进行屈光补偿,用夏克哈特曼波前传感器进行实时的波面探测,将探测所得波前畸变进行波前重构,通过LCOS波前校正器进行高阶像差的波面校正提高系统成像质量。经过校正后系统波前误差得到有效控制。光学系统的分辨率接近70 lp/mm,已经到达该光学系统的衍射极限分辨。可以得出:液晶自适应视网膜成像系统可以满足高度屈光不正情况下的人眼视网膜成像要求。In order to correct the aberration of the eye with huge low aberration and get a better quality of retina image, an adaptive optics imaging system based on low order aberration self-compensating system was demonstrated. An optical system based on eye accommodation property was utilized to correct the low order aberration of eye. The LCOS （liquid crystal on silicon）and Shark-Hartman wave- front sensor were used for wave-front correcting and wave-front detecting respectively. The residual low order aberration and high order wave- front aberration were corrected by LCOS wave- front corrector. System aberration was reduced significantly. The optical system diffraction limit was approached at 70 lp/mm. Utilizing a Low order aberration self-compensating system, enhanced images of retina were obtained by liquid crystal adaptive optics imaging system facing large eye refractive error.

关 键 词：自适应光学 夏克哈特曼波前传感器 LCOS(Liquid CRYSTAL on silicon) 衍射极限 

分 类 号：O439[机械工程—光学工程] TP212.14[理学—光学]