光学学报, 2014, 34 (5): 0511002, 网络出版: 2014-04-22
使用改进型科勒照明系统的全场光学相干层析成像系统
Improved Khler Ilumination-Based Full-Field Optical Coherence Tomography System
成像系统 科勒照明 光学相干层析成像 移相干涉术 imaging systems Khler illumination optical coherence tomography phase-shifting interferometry
摘要
研制了一套基于林尼克干涉仪结构的全场光学相干层析成像(FF-OCT)系统,以获得高质量的全场光学相干层析图像。不同于大多数FF-OCT系统所采用的光纤束照明方式,本系统采用卤素灯作为光源,搭建改进型科勒照明系统进行照明。选用Intel Pentium 4处理器芯片作为样品,对其内部结构进行了成像实验,通过四步移相算法根据四幅连续的相移干涉图像获得了样品的层析图像,实验结果证实了成像系统的可行性。使用改进型科勒照明系统的FF-OCT成像系统,与现有的FF-OCT系统相比,结构简单便于制作,且成本低廉,为实现高分辨率光学相干层析成像提供了简单易行的方法。
Abstract
A Linnik interference microscope-based full-field optical coherence tomography (FF-OCT) system is developed to obtain high-quality optical sectional images. Compared with other FF-OCT systems illuminated with optical fiber (OF) bundle, the improved Khler illumination arrangement with a halogen lamp is used in the proposed FF-OCT system. A tomographic image of an Intel Pentium 4 chip is retrieved from four sequential phase-shifted interferograms by using a four-step algorithm. The experimental results confirm the feasibility of the proposed imaging system. The proposed improved Khler illumination-based FF-OCT system is characterized by its use of simple elements and lower cost, providing a simple and convenient method for high-resolution OCT imaging.
朱晓萌, 高万荣, 朱越. 使用改进型科勒照明系统的全场光学相干层析成像系统[J]. 光学学报, 2014, 34(5): 0511002. Zhu Xiaomeng, Gao Wanrong, Zhu Yue. Improved Khler Ilumination-Based Full-Field Optical Coherence Tomography System[J]. Acta Optica Sinica, 2014, 34(5): 0511002.