多重背景全息图的原理和制作  

THE PRINCIPLE AND FABRICATION OF MULTIPLE BACKGROUND HOLOGRAM

作　　者：麦满芳[1] 邹春莉[1] 赵志超[1] 

机构地区：[1]深圳大学理学院,广东深圳518060

出　　处：《物理与工程》2006年第1期26-28,58,共4页Physics and Engineering

摘　　要：本文利用全息摄影具有真正视差和大景深良好效果的优势,设计了一个主体物分别与多重背景独立组合的浮雕型全息图片.拍摄中运用二次曝光和分区域曝光技术切换不同视场以实现不同“主—背”组合图的再现.所制得的反射全息图具有高衍射效率和高信噪比,此拍摄方法的运用使图片可携带及表达内涵更为丰富的各种信息.Based on the advantages of complete parallax and great depth of field demonstrated by holography, an empaistic hologram is designed by fitting the object with each of the multiple backgrounds respectively. The visual fields were switched through double exposure and circumscription exposure to achieve the reappearance of different subject background combinations in the images. These holograms are demonstrated to have high diffraction efficiency and high SNR （signal to-noise ratio）. The images could be enriched with more spatial information by the technique demonstrated in this paper.

关 键 词：多重背景 全息图 衍射效率 信噪比 

分 类 号：O438.1[机械工程—光学工程]