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利用反射全息实现计算全息三维显示
引用本文:拜晓慧,万琳,任亚萍,黄艳芳,王辉.利用反射全息实现计算全息三维显示[J].光子学报,2012,41(5):591-595.
作者姓名:拜晓慧  万琳  任亚萍  黄艳芳  王辉
作者单位:浙江师范大学信息光学研究所,浙江金华,321004
基金项目:国家自然科学基金,浙江省自然科学基金,浙江师范大学创新团队项目资助
摘    要:计算全息和光学全息都可应用于三维显示,但各有自己的优势和缺陷.将计算全息和光学反射全息相结合,可以突破光学全息对记录物体的限制,进行虚拟物体或自然场景的全息图的制作,同时可以实现白光再现.本文首先用三维扫描仪获得实际物体的三维数据,用"点云算法"模拟得到其菲涅耳全息图透射率数据,采用计算全息打印机将其输出于全息记录介质,得到可光学再现的菲涅耳计算全息图H1.然后将H1作为光学全息的记录物体进行反射全息记录,将平面全息转化为体全息,实现了计算全息白光再现.

关 键 词:计算全息  菲涅耳全息图  三维显示  反射全息
收稿时间:2011/11/23

Reflection Holography for Three-dimensional Display Based on Computer-generated Holography
BAI Xiao-hui , WAN Lin , REN Ya-ping , HUANG Yan-fang , WANG Hui.Reflection Holography for Three-dimensional Display Based on Computer-generated Holography[J].Acta Photonica Sinica,2012,41(5):591-595.
Authors:BAI Xiao-hui  WAN Lin  REN Ya-ping  HUANG Yan-fang  WANG Hui
Institution:(Institute of Information Optics,Zhejiang Normal University,Jinhua,Zhejiang 321004,China)
Abstract:Both of the computer generated holograms and optical holograms can be applied to a three dimensional display, but each has its own advantages and shortcomings. A novel technique is proposed based on the combination of computer generated holography and reflection holography, which can overcome the limitation of optical holography. This technique can record real existing objects and virtual objects, and achieve the reconstruction image by white light illumination. A 3D scanner is used to obtain 3D data of a real existing object and calculate Fresnel holographic transmission distribution by point cloud algorithm. The Fresnel hologram is outputted by a holographic microfilming system. And, the reconstructed real image H1 of the computing hologram is used as the recording object for optical reflection hologram. The principle of this technique is explained in detail and the experimental results demonstrate that the technique is feasible.
Keywords:Computer generated hologram  Fresnel hologram  Three dimensional display  Reflection hologram
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