大屏幕激光显示系统扫描技术研究
发布时间：2018-08-07 21:53
【摘要】： 与普通光源发射的光相比,激光方向性强,单色性好,亮度高。用激光作为显示光源显示的画面具有色彩丰富,分辨率高,亮度高等特点。大屏幕激光扫描显示技术是利用激光的优异特性,将计算机技术、激光技术和图像处理技术融合在一起,应用于娱乐、广告、电视等领域的一门新技术。大屏幕激光扫描显示技术不但具有潜在的,巨大的经济价值,也具有良好的社会效益。本文围绕大屏幕激光扫描显示系统的扫描技术展开研究,主要内容及创新点概括如下: 1.阐述了激光显示技术研究的目的和意义,介绍了当前国内外激光显示技术和扫描器件的发展状况,指出激光显示技术是最有潜力的未来超大屏多媒体显示的发展方向之一。 2.介绍了激光的辐射原理,简要说明了激光器的分类,论述了激光二极管泵浦固体激光器的研究进展。 3.详细比较了当前五种扫描技术,比较确定了在本系统中采用双振镜技术进行扫描。 4.详细论述了双振镜扫描系统的结构设计,分析了图像失真原因,包括枕形失真,焦点误差和非线性失真,提出了相应的软件或硬件校正方法。随着振镜性能的提高,双振镜扫描将会进一步满足激光大屏幕显示的要求。 5.设计了基于单片机的双振镜控制系统,完成了对双振镜扫描模块的控制,实现了将简单图形和文字在较远距离大屏幕上准确显示的目的。 6.提出了一种闭合路径扫描法,最后针对单片机控制不能发挥振镜最佳扫描速度的问题提出了用DSP进行控制,并做出了初步的设计。
[Abstract]:Compared with the light emitted by ordinary light source, the laser has strong directivity, good monochrome and high brightness. The display with laser as the light source has the characteristics of rich color, high resolution, high brightness and so on. Large screen laser scanning display technology is a new technology which combines computer technology, laser technology and image processing technology, and is used in entertainment, advertising, television and other fields. Large-screen laser scanning display technology not only has potential, huge economic value, but also has good social benefits. This paper focuses on the scanning technology of large screen laser scanning display system. The main contents and innovations are summarized as follows: 1. The purpose and significance of laser display technology are described, and the development of laser display technology and scanning device at home and abroad is introduced. It is pointed out that laser display technology is one of the most promising development directions of super large screen multimedia display in the future. The principle of laser radiation is introduced, the classification of laser is briefly explained, and the research progress of laser diode pumped solid state laser is discussed. In this paper, five scanning techniques are compared in detail, and it is determined that the double vibroscope technique is used to scan the system. 4. 4. The structure design of double vibroscope scanning system is discussed in detail. The causes of image distortion, including pillow distortion, focus error and nonlinear distortion, are analyzed, and the corresponding software or hardware correction methods are proposed. With the improvement of mirror performance, double mirror scanning will further meet the requirements of large laser screen display. The control system of double vibroscope based on single chip microcomputer is designed, and the control of scanning module of double vibroscope is completed. The purpose of displaying simple graphics and characters on a large screen over a long distance is realized. 6. In this paper, a closed path scanning method is proposed. Finally, aiming at the problem that the single chip computer can not control the optimal scanning speed of the vibrating mirror, a DSP control method is proposed, and a preliminary design is made.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TN27;TN249
本文编号：2171459
[Abstract]:Compared with the light emitted by ordinary light source, the laser has strong directivity, good monochrome and high brightness. The display with laser as the light source has the characteristics of rich color, high resolution, high brightness and so on. Large screen laser scanning display technology is a new technology which combines computer technology, laser technology and image processing technology, and is used in entertainment, advertising, television and other fields. Large-screen laser scanning display technology not only has potential, huge economic value, but also has good social benefits. This paper focuses on the scanning technology of large screen laser scanning display system. The main contents and innovations are summarized as follows: 1. The purpose and significance of laser display technology are described, and the development of laser display technology and scanning device at home and abroad is introduced. It is pointed out that laser display technology is one of the most promising development directions of super large screen multimedia display in the future. The principle of laser radiation is introduced, the classification of laser is briefly explained, and the research progress of laser diode pumped solid state laser is discussed. In this paper, five scanning techniques are compared in detail, and it is determined that the double vibroscope technique is used to scan the system. 4. 4. The structure design of double vibroscope scanning system is discussed in detail. The causes of image distortion, including pillow distortion, focus error and nonlinear distortion, are analyzed, and the corresponding software or hardware correction methods are proposed. With the improvement of mirror performance, double mirror scanning will further meet the requirements of large laser screen display. The control system of double vibroscope based on single chip microcomputer is designed, and the control of scanning module of double vibroscope is completed. The purpose of displaying simple graphics and characters on a large screen over a long distance is realized. 6. In this paper, a closed path scanning method is proposed. Finally, aiming at the problem that the single chip computer can not control the optimal scanning speed of the vibrating mirror, a DSP control method is proposed, and a preliminary design is made.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2007
【分类号】：TN27;TN249
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