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提高显微成像分辨率关键技术的研究
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摘要
自第一台显微镜诞生以来,显微成像技术已经广泛的应用于医学,生物,电子,军事,工业等各个它所涵盖的微观领域,各种新颖的显微成像技术伴随高科技的应用正在不断的涌现。随着信息技术的飞速发展,显微成像技术的研究已经成为一个十分重要的课题。本文以目前较为新型的两种显微成像技术:数字显微成像系统和光学相干层析成像系统(OCT)为研究对象,对于提高显微成像系统的横向分辨率和纵向分辨率的关键技术展开了深入的研究。
    本文以显微成像技术的发展概况为先导,以该研究领域中的热点激光共焦三维扫描显微系统(CSOM)的基本原理为例给出了显微系统的横向分辨率和纵向分辨率的概念。在对如何提高显微系统的横向和纵向分辨率的关键技术深入理论分析的基础上,本文提出了利用干涉显微镜为核心并结合数字图像处理测量技术相结合的数字显微镜来提高显微成像系统的横向分辨率和利用自制凸轮纵向扫描机构的OCT系统来提高显微成像系统中纵向分辨率的两种方法,围绕以上两种方法,研制了一套数字显微镜系统,并以Microsoft Visual C++为开发平台编写了相应的图像处理软件,对菲涅尔微透镜阵列做了深入的实验研究并给出了提高横向分辨率的试验数据,同时还研制了一套以凸轮扫描机构为核心的OCT实验系统,对玻璃试样行了实验获得了10微米左右的分辨率,并取得了实用眼检OCT系统的实验数据作为对照。
    本文就如何提高横向分辨率和纵向分辨率的关键技术做的相关研究对于显微成像领域的设备改进与广泛应用有着实际价值。
Since the birth of the first microscope, the microscopy imaging technology has been widely applied in the microcosmic field that it covered just like medicine, biology, electronic, military, industry and so on. A lot of novel microscopy imaging technology are coming forth continuously with the application of high-tech. For the fast development of information technology, the research on microscopic imaging has become the important topic all around the world. In this paper, we has completed the embedded research on key-technology to improving transverse resolution and longitudinal resolution of microscopy imaging system, which is oriented at the two kinds of new-style microscopy imaging technology that are digital microscope system and optical coherence tomography (OCT) as research objects.
    The thesis brings out the conception of transverse and longitudinal resolution of microscope system, following the development survey of microscope imaging technology as the fore-guidance and with the baasis of the theory of confocal scanning optic microscopy as example which is the hot point of microscope field. Based on the deep theoretical research on how to improving transverse resolution and longitudinal resolution of microscopy imaging system,, two methods are given in this thesis, one is about how to improve transverse resolution based on the digital image processing and measurement technology which utilize interference microscope as core of the system, and another is about how to improve longitudinal resolution of OCT experimental system by using self-designed cam-driving longitudinal scanning wheel. The paper encloses the methods giving above and gives out a set of digital microscope system. The corresponding digital image processing software coded on Microsoft Visual C++ platform has been developed, then a deep research on the Fresnel microlens arrays by using the developed system is excuted and the experiment results of improving transverse resolution are achieved in this paper. A set of OCT experimental system which the cam-driving longitude scanning wheel is as the core
    
    
    component is established, by this system, we obtain about 10 micron longitudinal resolution from experiments results on glass sample and so on, comparing with the experiment data from practical eyes-examine OCT system.
    The research on key-technology about how to improve transverse and longitudinal resolution of this paper has practical value for equipments promotion and widely application in the microscopy field.
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