基于层析传感的自适应光学眼底成像系统
发布时间：2018-10-14 08:38
【摘要】：为了解决传统自适应光学系统校正视场小的问题,提出了一种层析自适应光学眼底成像系统。以Zemax为工具,Liou-Brennan(LB)眼模型为仿真对象,研究了层析自适应光学眼底成像系统的性能。分析了20°视场内的眼底像差特性,用Zernike边缘多项式描述眼底像差,获得了不同视场内眼底像差的类型和大小。对比了传统自适应光学和层析自适应光学眼底成像系统的性能。结果表明,相较于传统自适应光学,层析自适应光学系统可将校正视场从1.2°扩大至3°。确定了传统自适应光学和层析自适应光学眼底成像系统中变形镜的最佳共轭位置,均位于出瞳面前3mm,此位置与人眼角膜共轭。
[Abstract]:In order to solve the problem of small field of view correction in traditional adaptive optics system, a tomography adaptive optical fundus imaging system is proposed. Using Zemax as tool and Liou-Brennan (LB) eye model as simulation object, the performance of tomography adaptive optical fundus imaging system is studied. The characteristics of fundus aberration in 20 掳field of view are analyzed. The Zernike edge polynomial is used to describe the fundus aberration, and the types and sizes of the aberration in different field of view are obtained. The performances of conventional adaptive optics and tomography adaptive optical fundus imaging systems are compared. The results show that compared with traditional adaptive optics, the corrected field of view can be expanded from 1.2 掳to 3 掳by the tomography adaptive optical system. The optimal conjugate position of deformable lens in conventional adaptive optics and tomography adaptive optical fundus imaging systems is determined, which is located at 3mm in front of the pupil, which is conjugated with the cornea of human eyes.
【作者单位】： 北京理工大学光电学院自适应光学实验室;北京理工大学光电学院光电技术与信息系统实验室;
【基金】：国家自然科学基金(61471039)
【分类号】：O439
，
本文编号：2269937
[Abstract]:In order to solve the problem of small field of view correction in traditional adaptive optics system, a tomography adaptive optical fundus imaging system is proposed. Using Zemax as tool and Liou-Brennan (LB) eye model as simulation object, the performance of tomography adaptive optical fundus imaging system is studied. The characteristics of fundus aberration in 20 掳field of view are analyzed. The Zernike edge polynomial is used to describe the fundus aberration, and the types and sizes of the aberration in different field of view are obtained. The performances of conventional adaptive optics and tomography adaptive optical fundus imaging systems are compared. The results show that compared with traditional adaptive optics, the corrected field of view can be expanded from 1.2 掳to 3 掳by the tomography adaptive optical system. The optimal conjugate position of deformable lens in conventional adaptive optics and tomography adaptive optical fundus imaging systems is determined, which is located at 3mm in front of the pupil, which is conjugated with the cornea of human eyes.
【作者单位】： 北京理工大学光电学院自适应光学实验室;北京理工大学光电学院光电技术与信息系统实验室;
【基金】：国家自然科学基金(61471039)
【分类号】：O439
，
本文编号：2269937
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