光盘信息符统计特性的激光散斑测试  

Information Mark Measurement of Optical Disk Using Laser Speckle Contrast Method

作　　者：李新忠[1] 台玉萍[2] 王亚军[3] 聂兆刚 

机构地区：[1]河南科技大学物理与工程学院,河南洛阳471003 [2]河南科技大学化工与制药学院,河南洛阳471003 [3]中科院西安光学精密机械研究所,西安710119 [4]日本东京国立电气通信大学应用物理化学部和激光科学研究院

出　　处：《电光与控制》2011年第5期76-79,共4页Electronics Optics & Control

基　　金：河南省国际科技合作计划项目(104300510065);河南科技大学自然科学领域科研创新能力培育基金项目(2009CZ0009);河南科技大学实验技术开发基金项目(SY0910020)

摘　　要：采用激光散斑的方法研究了CD光盘的刻录质量。由于标志光盘信息符的凹凸结构导致了光盘表面微结构的光学粗糙性,光盘不同区域被激光照射后在测量空间形成散斑图像,通过分析光盘不同区域产生的散斑图的统计相关性及对比度值的变化,对光盘的刻录质量进行了定性研究。结果显示,刻录质量好的光盘,其不同区域的散斑相关性好,散斑对比度值高且起伏性较小;而刻录质量有问题的光盘,信息符的统计相关性差,且散斑对比度值出现较大的起伏。研究表明,激光散斑方法是一种有效表征光盘刻录质量的新方法。The burning quality of optical disk was studied by laser speckle method.Since the concave-convex structure of information marks led to the surface roughness of optical disk,speckle patterns were produced from different regions when the optical disk was illuminated by laser beam.The optical disk burning quality was investigated by analyzing the statistical correlation and the speckle contrast value.The results showed that for good quality optical disk,there was a good correlation of different regions and the speckle contrast values were higher with less fluctuation.Conversely,for bad quality optical disk,the correlation was weak and the fluctuation of contrast values became larger.Experimental tests indicated that the laser speckle method is an effective method to character the optical disk quality.

关 键 词：激光散斑 光盘 信息符 统计特性 

分 类 号：V241[航空宇航科学与技术—飞行器设计] TP333.4[自动化与计算机技术—计算机系统结构]