基于SLM的计算全息三维显示视角扩展编码  

Viewing-angle Enlargement of a CGH Displayed on a LC-SLM

作　　者：尹霞[1] 符秋丽[1] 杨济民[1] 国承山[1] 

机构地区：[1]山东师范大学物理系,济南250014

出　　处：《光子学报》2008年第6期1144-1147,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(60678027);山东省自然科学基金(Y2006A20)资助

摘　　要：提出一种利用高分辨液晶空间光调制器的高衍射级来增大再现视角的计算全息编码方法.该方法首先对被记录物波的视角超出所用高分辨液晶空间光调制器允许范围的物波信息进行预处理,使预处理后的物波视角满足抽样定理;然后再进行计算全息编码.这种计算全息图可利用高分辨液晶空间光调制器的特定高衍射级恢复再现被记录物波.文中给出了该方法的编码原理及物波函数的预处理公式,并通过设计实例和实验结果证明了该方法的可行性.An encoding method for enlarging the viewing angle of a computer-generated hologram（CGH） is proposed. In this method, a pre-treatment is adopted for the object wave whose viewing angle exceeds sampling limit of the SLM. The pre-treated object＇s wave can satisfy the sampling theorem and can be encoded as a CGH. When the CGH is displayed on a programmable LC-SLM, the image can be reconstructed in a special high diffraction order of the LC-SLM. The encoding process is described and some useful encoding formulasare derived. An experimental demonstration for proving the feasibility of this method is given.

关 键 词：计算全息 液晶空间光调制器 视角 抽样定理 

分 类 号：O438.1[机械工程—光学工程]