超分辨光学头的设计与研究
文献类型：学位论文
| 作者 | 周辉 |
| 学位类别 | 硕士 |
| 答辩日期 | 2007 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 阮昊 |
| 关键词 | 光学超分辨 光学头 超分辨光瞳滤波器 ZEMAX |
| 其他题名 | Design and research about Super-Resolution optical picking-up head |
| 中文摘要 | 随着信息技术的飞速发展和高清时代的到来，人们对存储容量的要求越来越高。对于光存储来说就是对分辨率的要求越来越高。提高分辨率的方法有多种，光学超分辨技术就是其中一种，而且得到了广泛的研究。本论文的工作主要集中于光学超分辨技术在光学头中的应用研究。着重开展了以下三个方面的工作：一，各种光学读取系统的设计；二，超分辨技术的调研和位相板的模拟，并设计了带有位相板的超分辨光学头；三，进行位相板的加工，及将其放于光学头中不同位置的测试和评价。 本论文的主要成果如下： 1. 进行光学读取头设计和模拟，在熟练运用ZEMAX基础上，设计了若干光学头系统：DVD系统、新型HDDVD系统、BD系统及物镜。其中HDDVD系统运用了一个五角棱镜，能起到缩短光路和减小尺寸的作用，而且改变波长后能兼容DVD。而BD系统的特点在于其物镜的双弯月形透镜结构，其数值孔径能达0.85，工作距离为1.21mm，波像差控制在0.033λ以内。 2. 进行了超分辨位相板的ZEMAX模拟，采用前人的参数设计了位相板，获得的超分辨效果与理论值一致，旁瓣比为13％。后来将位相板引入到光学头中，也得到了较好的模拟结果。还运用该模型分析了在位相板倾斜不同角度和位相板不同偏心程度下的超分辨效果，为后面的超分辨试验提供了参考价值。 3.初步研究了超分辨光学读取系统。在周常河老师帮助下加工了位相板，确定了位相板的放入位置，准备了三套测试方案并获得相应评价数据。虽然所得试验结果不太理想，但明确了问题所在，并提出了下一阶段试验设想。 本课题是NVD项目的一种实验方案，它能通过不该变光学头的波长和数值孔径而获得更高存储密度，以较低的成本应对高清时代的挑战，对我国光存储产业有现实意义。 |
| 英文摘要 | As the fast development of information technology and the advent of high definition era, we need higher and higher storage capacity. For the area of optical storage, we need higher and higher resolution ability. There are several methods to enhance the resolution, and the optical super resolution technology is one of them, it has been researched broadly. The work of my dissertation is mainly focused on the application of optical SR technology in optical picking-up head. I have done the work of 3 aspects specially as follow:1, the design of several different optical picking-up system;2, the broad investigation of SR technology and simulation of phase pupil plate, the designing of the SR pick up head with a phase pupil plate;3, the machining of phase pupil plate, and the testing and judgment at different position of the pick up head. The main achievements of the dissertation are as follow: 1. The design and simulation of optical picking up head. Based on the proficient handling of ZEMAX, I designed several optical pick up system: DVD system, new kind of HDDVD system, BD system and its objective lens. The HDDVD system used a panta prism, which have a function of shortening the light route and shrinking the pick up head size. The system is also compatible for the DVD if the wavelength is changed. The character of the BD system lies in the double meniscus lens structure of its objective lens. It has a NA of 0.85, a working distance of 1.21mm, and its wave aberration is controlled under 0.033λ. 2. The simulation of SR phase pupil plate with ZEMAX. I designed the phase plate based on other one’s parameters, and the SR effect is quite agree with the theoretical value, the side lobe ratio is 13%. Later I put the phase plate into the pick up head, and get good simulation results too. Based on this model, I analyzed the SR effect when the phase plate is at different angle and have different eccentricity. The analysis result has a reference value for the SR experiment later. 3. Researched the SR optical pick up system elementarily. After I machined and tailored the phase plate with the help of professer Zhou, and considered the putting position, I prepared three testing scheme and got according result. Though the experiment result is not that kind of ideal, I have found out where the problem lies, and conceived the next stage experiment plan. This task is just one experiment scheme of the NVD item. It can achieve a higher storage density easily without the reducing of wavelength or the increasing of NA. It can face the challenge of high definition era at a much low cost, which has a realistic meaning for the optical storage industry of our country. |
| 语种 | 中文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/16558]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 周辉. 超分辨光学头的设计与研究[D]. 中国科学院上海光学精密机械研究所. 2007. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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