二维频域光学相干层析系统研究  

Development of two-dimensional optical coherence tomography

作　　者：游腾飞[1] 钟舜聪[1,2] 钟剑锋[1] 张秋坤[1] 罗曼婷 

机构地区：[1]福州大学机械工程及自动化学院,福建福州350108 [2]福建省医疗器械和生物技术重点实验室,福建福州350000

出　　处：《机电工程》2015年第5期602-606,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家自然科学基金资助项目(51005077);教育部高学校博士学科点科研基金(博导类;20133514110008);国家卫生和计划生育委员会科研基金(WKJ-FJ-27);福建省质量技术监督局科技项目(FJQI2013095;FJQI2012024);福建省杰出青年基金滚动项目(2014J07007);福建省高等学校学科带头人培养计划(闽教人〔2013〕71号);国家质检总局科技计划项目(2011QK216)

摘　　要：针对时域光学相干层析成像系统的成像速度较慢的问题,采用VC++与Matlab混合编程技术开发了二维频域光学相干层析成像系统,实现了对被测样品进行内部快速成像;搭建二维频域光学相干层析成像系统代替一维频域光学相干层析成像系统;利用计算机驱动面阵CCD相机对干涉信号进行采集得到干涉信号;采用计算机驱动NI卡对压电陶瓷(PZT)移相器进行相移控制以达到频域光学相干层析成像系统对移相的需求,利用计算机驱动线性电动移动平台实现检测样品进行横向扫描以达到对样品进行三维成像。研究结果表明,该系统集成度高,开发的软件功能齐全、界面友好、便于维护和升级;该二维系统相比一维光学相干层析成像系统而言减少了一维的扫描采集次数,大大提高了成像速度。Aiming at low imaging speed of Time-domain optical coherence tomography （TD-OCT）, VC ＋ ＋ and Matlab mixed programming technology was employed to develop two-dimensional Fourier-domain optical coherence tomography （2D FD-OCT） system which could image the internal structure of samples rapidly. A 2D FD-OCT system was developed to replace one-dimensional FD-OCT system. An array CCD camera drove by computer was used to acquire the interference data. NI data-acquisition card controlled by computer was utilized to drive the PZT to achieve the phase shift needed in the FD-OCT system. For the sake of three-dimensional imaging, a linear electric stage was drove to scan the samples. The results indicate that the developed Two-dimensional FD-OCT system is highly integrated. The developed control soft- ware is multiple functions with a friendly interface and it is convenient for software maintenance and upgrade. Compared with one-dimensional FD-OCT system, Two-dimensional FD-OCT system reduced the scanning time and therefore increased the imaging speed.

关 键 词：VC++ MATLAB 二维 频域光学相干层析 

分 类 号：TH74[机械工程—光学工程]