人眼像差探测哈特曼波前传感器的质心优化

钮赛赛; 沈建新; 梁春; 张运海

doi:10.3788/OPE.20111912.3016

您当前的位置：

首页 >

文章列表页 >

人眼像差探测哈特曼波前传感器的质心优化

信息科学 | 更新时间：2020-08-12

- 人眼像差探测哈特曼波前传感器的质心优化
- Centroid optimization of Hartmann-Shack wave-front sensor for human eye aberration detection
- 光学精密工程 2011年19卷第12期页码：3016-3024
- 作者机构：
  
  1. 南京航空航天大学机电学院,江苏南京 210016
  2. 苏州六六视觉科技股份有限公司, 江苏苏州 215005
- 作者简介：
- 基金信息：
  
  国家863高技术研究发展计划资助项目(No.2006AA020804)();2010年江苏省普通高校研究生科研创新计划资助项目(No.CX10B_107Z)()
- DOI：10.3788/OPE.20111912.3016
  中图分类号： TP212.14;TP391
- 收稿日期：2011-05-03，
  
  修回日期：2011-05-26，
  
  网络出版日期：2011-12-25，
  
  纸质出版日期：2011-12-25
- 稿件说明：
移动端阅览
钮赛赛, 沈建新, 梁春, 张运海. 人眼像差探测哈特曼波前传感器的质心优化[J]. 光学精密工程, 2011,19(12): 3016-3024

NIU Sai-sai, SHEN Jian-xin, LIANG Chun, ZHANG Yun-hai. Centroid optimization of Hartmann-Shack wave-front sensor for human eye aberration detection[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 3016-3024
钮赛赛, 沈建新, 梁春, 张运海. 人眼像差探测哈特曼波前传感器的质心优化[J]. 光学精密工程, 2011,19(12): 3016-3024 DOI： 10.3788/OPE.20111912.3016.

NIU Sai-sai, SHEN Jian-xin, LIANG Chun, ZHANG Yun-hai. Centroid optimization of Hartmann-Shack wave-front sensor for human eye aberration detection[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 3016-3024 DOI： 10.3788/OPE.20111912.3016.

摘要

为提高自适应光学系统中Hartmann-Shack波前传感器的动态测量范围和测量精度

对由CCD采集的波前光斑图进行了质心探测研究。介绍了波前传感器的工作原理

根据127单元传感器的结构特征和实际人眼光斑图的畸变特点

提出了一种动态定位光斑区域、动态分割区域内部阈值以及锁定最优探测窗口的自适应光斑质心探测方法。讨论了该方法中阈值等级选取对人眼光斑图质心探测的影响

并通过仿真和实验分析了算法的质心探测精度和算法对噪声影响的鲁棒性。实验结果表明

光斑区域内选取阈值等级为总等级数的(503)%时最合适;与其他方法相比

自适应质心探测方法的探测误差减小了60%以上;将该探测方法运用至自适应光学视网膜成像系统的波前传感器中

可将人眼像差RMS值从0.728闭环校正到0.081(=785 nm)

达到衍射极限

并获得视网膜图像。本方法针对光斑特征选择不同实验参数

弥补了传统算法的局限性

基本满足了人眼像差测量的可行性和实用性。

Abstract

In order to improve the dynamic measurement range and measurement accuracy of the Hartmann-Shack Wavefront Sensor (HSWS) in an adaptive optics system

the centroid detection for a wavefront spot pattern collected by a CCD is researched. The principle of HSWS is introduced and an adaptive centroid detection method by dynamic positioning spot region

dynamic segmenting threshold level and locking optimal detection window is presented according to the structure features of HSWS with 127 units and the distortion characteristics of actual human eye spot pattern.The effects of threshold level selection on human eye spot centriod detection are discussed and the centroid detection accuracy and noise robustness of the method are analyzed through simulation and experiments. Experimental results indicate that selecting the threshold level to be (503)% of the total grade amount is more appropriate and the centroid detection error can be decreased by 60% or more as compared with that of other detection methods. By using adaptive centroid detection method in the HSWS of an adaptive optical retina imaging system

human eye aberration can be reduced from 0.728 to 0.081 in RMS(=785 nm) through a closed loop correction.Moreover

the system can reach the diffraction limit basically and can obtain a retina image. These results show that the adaptive centroid detection method can select different experimental parameters aimed at the characteristics of spots

which makes up the limitations of the general methods.It meets the feasibility and practicability of human eye aberration measurement.

关键词

Keywords

references

姜文汉. 自适应光学技术[J]. 自然杂志, 2006, 28(1):7-13. JIANG W H. Adaptive optical technology[J]. Chinese Journal of Nature, 2006, 28(1):7-13. (in Chinese)[2] 夏明亮,李抄,刘肇南,等. Shack-Hartmann波前传感器图像自适应阈值的选取[J]. 光学精密工程, 2010,18(2):334-340. XIA M L, LI CH, LIU ZH N, et al. Adaptive threshold selection method for Shack-Hartmann wavefront sensors[J]. Opt. Precision Eng., 2010,18(2):334-340. (in Chinese)[3] 梁春, 廖文和, 沈建新. 自适应光学在眼科医疗中的应用[J]. 应用激光, 2007, 27(3): 237-240. LIANG CH, LIAO W H, SHEN J X. Applications of adaptive optics in ophthalmic medical treatment[J]. Applied Laser, 2007, 27(3):237-240. (in Chinese)[4] YIN X, LI X, ZHAO L, et al. Adaptive thresholding and dynamic windowing method for automatic centroid detection of digital Shack-Hartmann wavefront sensor [J]. Applied Optics, 2009,48(32):6088-6098.[5] PARK S, BAIK S, KIM C, et al. A study on a fast measuring technique of wavefront using a Shack-Hartmann sensor[J]. Optics and Laser Technology, 2002, 34(8):687-694.[6] 王鹏, 周昕, 王勇, 等. 哈特曼波前传感器光斑质心探测窗口的自动确定方法研究[J]. 激光杂志, 2005, 26(5):46-47. WANG P, ZHOU X, WANG Y, et al. Study on an automatic selection method for spot centroid detection window of Hartman wavefront sensor[J]. Laser Journal, 2005, 26(5):46-47. (in Chinese)[7] 王薇, 陈怀新. 基于优化探测窗口的光斑质心探测方法[J]. 强激光与粒子束, 2006, 18(8):1249-1252. WANG W, CHEN H X. New method for centroid detecting of focal spot based on optimizing detecting window[J]. High Power Laser and Particle Beams, 2006,18(8):1249-1252. (in Chinese)[8] 李华强,宋贺伦,饶长辉,等. 增大夏克-哈特曼波前传感器动态测量范围的方法[J]. 光学精密工程, 2008,16(7):1203-1207. LI H Q, SONG H L, RAO CH H, et al. Extrapolation method to extend dynamic range of Shack-Hartmann wavefront sensor [J]. Opt. Precision Eng., 2008,16(7):1203-1207. (in Chinese)[9] 程少园,曹召良,胡立发,等. 用夏克-哈特曼探测器测量人眼波前像差[J]. 光学精密工程,2010,18(5):1060-1067. CHENG SH Y, CAO ZH L, HU L F, et al. Measurement of wavefront aberrations of human eyes with Shack-Hartmann wavefront sensor[J]. Opt. Precision Eng., 2010, 18(5): 1060-1067. (in Chinese)[10] 任剑峰,饶长辉,李明全. 一种HartmannShack波前传感器图像的自适应阈值选取方法[J]. 光电工程, 2002, 29(1):1-5. REN J F, RAO CH H, LI M Q. An adaptive threshold selection method for Hartmann-Shack wavefront sensor[J]. Opto-Electronic Engineering, 2002, 29(1):1-5. (in Chinese)[11] PRIETO P M, VARGAS M F, GOELZ S, et al. Analysis of the performance of the Hartmann-Shack sensor in the human eye [J]. Journal of the Optical Society of America A (Optics, Image Science and Vision), 2000, 17(8):1388-1398.[12] BAIK S H, PARK S K, KIM C J, et al. A center detection algorithm for Shack-Hartmann wavefront sensor[J]. Optics and Laser Technology, 2007,39(2): 262-267.[13] 全薇, 王肇圻, 张春书, 等. 用模板匹配法选取光斑质心探测窗口[J]. 光电子激光, 2002,13(11):1148-1151. QUAN W, WANG ZH Q, ZHANG CH SH, et al. The use of template matching for Hartman sensor spot centroid detection window [J]. Journal of Optoelectronics & Laser, 2002,13(11):1148-1151. (in Chinese)[14] NIU S S, SHEN J X, LIANG CH, et al. Human eye aberration measurement and correction based on micro adaptive optics system. Proceedings of the 2009 2ND International Conference on Biomedical Engineering and Informatics, Tianjing, P.R. China: BMEI, 2009:1203-1207.

浏览量

752

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

采用分区曝光提高非均匀光照下质心测量信噪比的哈特曼波前传感器

基于投影光瞳分布的星地激光通信波前探测

自适应光学千单元级高压驱动系统的设计和性能分析

0.05~0.1 MPa宽气压环境下校准光源光学系统设计

千单元自适应压电变形镜的高压放大器设计