眼底自适应成像系统中的二自由度头托设计

潘宇骏; 韩玉琢; 解洪升; 杨乐宝; 王少鑫; 李大禹; 宣丽

doi:10.3788/YJYXS20153004.0590

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眼底自适应成像系统中的二自由度头托设计

器件物理及器件制备技术 | 更新时间：2020-08-12

- 眼底自适应成像系统中的二自由度头托设计
- Design of two degree-of-freedom head prop in adaptive optics retinal imaging system
- 液晶与显示 2015年30卷第4期页码：590-595
- 作者机构：
  
  1. 中国科学院大学北京,510640
  2. 中国科学院长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春,130022
  3. 长春中医药大学附属医院,吉林长春,130021
- 作者简介：
- 基金信息：
  
  国家自然科学基金(No.61405194,No.61475152)()
- DOI：10.3788/YJYXS20153004.0590
  中图分类号： TH122;TM301.2
- 收稿日期：2014-10-16，
  
  修回日期：2014-12-17，
  
  纸质出版日期：2015-08-05
- 稿件说明：
移动端阅览
潘宇骏, 韩玉琢, 解洪升, 杨乐宝, 王少鑫, 李大禹, 宣丽. 眼底自适应成像系统中的二自由度头托设计[J]. 液晶与显示, 2015,30(4): 590-595

PAN Yu-jun, HAN Yu-zhuo, XIE Hong-sheng, YANG Le-bao, WANG Shao-xin, LI Da-yu, XUAN Li. Design of two degree-of-freedom head prop in adaptive optics retinal imaging system[J]. , 2015,30(4): 590-595
潘宇骏, 韩玉琢, 解洪升, 杨乐宝, 王少鑫, 李大禹, 宣丽. 眼底自适应成像系统中的二自由度头托设计[J]. 液晶与显示, 2015,30(4): 590-595 DOI： 10.3788/YJYXS20153004.0590.

PAN Yu-jun, HAN Yu-zhuo, XIE Hong-sheng, YANG Le-bao, WANG Shao-xin, LI Da-yu, XUAN Li. Design of two degree-of-freedom head prop in adaptive optics retinal imaging system[J]. , 2015,30(4): 590-595 DOI： 10.3788/YJYXS20153004.0590.

摘要

眼科临床上所使用的简易头托限定医生与受试者的距离不能超过一臂之长

因此无法用于较为庞大的眼底自适应成像系统。为了达到眼底自适应成像系统与受试者瞳孔快速对准、稳定定位的要求

设计了一种可长距离控制的二自由度的头托。采用具有自锁能力的梯形丝杠驱动头托垂直运动

采用传动效率高的滚珠丝杠驱动头托水平运动

以步进电机提供动力。基于PIC16F877单片机

完成了头托移动控制的软硬件设计

并在MPLAB与Proteus环境下进行了联合仿真实验。仿真结果表明

所设计的头托可在竖直方向和水平方向以20 m的精准度定位

能够实现长距离、快速准确的瞳孔对准和左右瞳孔切换过程

是眼底自适应成像系统的良好辅助工具。

Abstract

Simple head props used in clinical ophthalmology limit the distance between the doctor and the patient to arm's length

so that it cannot be utilized in adaptive optics retinal imaging system which is big and heavy.A two degree-of-freedom head prop is designed to support the subject's jaw and to make the subject's pupil align more quickly and comfortably in adaptive optics retinal imaging system. Self-locking trapezoidal screw in vertical movement and high transmission efficiency ball screw in horizontal movement were used with two stepper motors providing power.The electronics design of the control system based on PIC16F877A was completed.A MPLAB-Proteus co-simulation experiment was conducted and the result shows that the system can do the control in realtime to make the motor start

stop

turn and speed.The designed head prop can move in the vertical direction and the horizontal direction at a minimum of 100 m/s and improve the positioning accuracy to 20 m

meeting the requirements of the adaptive optics retinal imaging system.

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references

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