计算全息再现中LCD黑栅效应的研究  

Black-matrix effect of liquid crystal display in reconstructing computer-generated hologram

作　　者：李莎[1] 刘旭[1] 张晓洁[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光电工程》2007年第8期41-45,共5页Opto-Electronic Engineering

摘　　要：在基于LCD再现的计算全息中,由于TFT-LCD固有的像素结构形成一个二维黑栅矩阵,其衍射作用会引入阵列分布的多个像,即黑栅效应,影响再现像的像质。通过理论推导,具体分析了LCD黑栅效应对全息再现像的影响;提出像素分解法,分别模拟理想再现和基于LCD再现的过程,得到相应的数字再现像。并对其进行了比较和分析,给出了分析结果,证实了LCD黑栅效应对再现像的影响。Since the pixel-structure of the Thin Film Transistor-Liquid Crystal Display （TFT-LCD） forms a 2D black-matrix in reconstructing the Computer-generated Hologram （CGH） based on LCD, its diffraction produces many useless images in array and decreases the reconstructed image quality. The LCD black-matrix effect on the reconstructed image of a CGH was analyzed through theoretical deducing. Both ideal and real reconstructing processes were simulated by computer, whose results were analyzed and presented that the real image quality did be worse than the ideal image quality due to the LCD black-matrix effect.

关 键 词：计算机全息图 液晶显示器 黑栅效应 模拟 差分比较 

分 类 号：TB877[一般工业技术—摄影技术]