【作者】 邵瑞；

【导师】 易佑民；

【作者基本信息】 安徽大学 ， 光学， 2005， 硕士

【摘要】 本工作研究的是具有梯度折射率(Gradient refractive index,GRIN)分布的聚合物微球在表面漫射材料上的应用。GRIN聚合物微球是一类新型光学器件,主要依靠介质特殊的非均匀折射率分布以实现各种光学功能。因其光学性能优越,且有体积小、光路短、重量轻、易于批量生产、便于集成等优点,在微小光学、集成光学、光通讯中有着诱人的应用前景,受到广泛地重视。 本文首先简要介绍了隐形技术的概念,以及目前隐形技术的一些基本情况,并指出视频隐形目前开发较少,而表面漫射是视频隐形的一种形式,分析了GRIN聚合物微球制作表面漫射材料的可能。进而选择两种合适的聚合物单体,利用悬浮扩散共聚的方法加工制备获得此类微球,并测得了所得微球的的折射率分布曲线和其他光学参数。在此基础上,根据球对称梯度折射率光学的基本理论,推导了其合适的工作条件,并进一步使用了光线追迹进行严格的计算,验证了理论推推导的正确性,明确了用其制作表面漫射材料能够达到的性能指标。 本论文的主要内容如下: 第一章和第二章 主要介绍了隐形材料的现状,表面漫射的概念,分析了均匀玻璃微球的漫射性能以及GRIN聚合物微球作表面漫射材料的可能。 第三章 对梯度折射率光学和高分子梯度折射率材料作了基本的介绍,重点介绍了球对称梯度折射率介质内部的基本理论。 第四章 介绍了应用悬浮扩散共聚法制备高分子GRIN微球的机理,并分析了对所制备的微球的折射率分布、透过率、不圆度等重要光学参数的测量。对试验结果进行了分析。 第五章 以Maxwell鱼眼透镜理论模型为对象,分析了用Maxwell鱼眼透镜制作漫射面材的漫射效果。接着根据梯度介质球内光线传输的理论,分析了提高梯度折射率微球漫射效果所需要的工作条件,并用光线追迹的方法进行了详细的计算和分析。从理论上证明了GRIN微球用作表面漫射材料具有的前景。 第六章 对全文进行总结,对本课题研究所取得的进展以及存在的问题进行了分析。更多还原

【Abstract】 This work mainly studies the application of a kind of polymer gradient refractive index(GRIN)micro-sphere-lens fabricated by suspension diffusion co-polymerization method on dispersion material.GRIN micro-sphere is a new-type optical element, its optical function is mainly achieved by the inhomogeneous reflective index distribution of the medium.It has such advantages—small volume,short optical path,lightness in weight, easiness in producing by wholesale,etc.It has great potentialities in such fields as micro-optics,integrated optics and optics communication.First ,we introduce the concept of technology of hidden from view and the recent situation of it,then point out that technology on video frequency is mentioned very little,and dispersion of GRIN is a way to realize it.Furthermore two suitable monomers were chosen to produce such kind of GRIN polymer micro-spheres by suspension diffusion co-polymerization method.Next, the refractive index distribution curve and other optic parameters of the micro-lens were measured.On the basis of that according to basic theory of spherical symmetry GRIN optics and the rigorous computation of light tracking, the best technical parameters were obtained .Main contents as followed:Chapter 1 and Chapter 2. Simply introduce the concept of technology of hidden from view and the recent situation of it, the fabrication of traditional glass and the possibility of the application of GRIN polymer micro-sphere on dispersion.Chapter 3. Formulate the GRIN optics and the polymer GRIN materials , then introduce the basic theory of spherical symmetry GRIN medium.Chapter 4. Elaborate the theoretics of making polymer "GRIN micro-lens by means of suspension-diffusion-copolymerization and the measurement of the common optics parameter of the medium lens, such as light passing index, no-sphericityand so on,then analyze those results and make adveises on how to improve.Chapter 5. First analyze the effect of dispersion on the MAXWELL fisheyes.then based on the measures refractive index distribution curve, according as the theoreticalmodel of light transmission in the GRIN medium, using quadrivakent Runge-Kutte method to carry the light tracking, we studied dispersion of GRIN polymer micro-sphere and its application and concluded the best conditions to get good result.Chapter 6. Sum up the achievements we made, the problems still existing and the work we should do in the future.更多还原