计算机制彩虹全息图的新算法  

A New Method for Computer-generated Rain-bow Hologram

作　　者：王辉[1] 李勇[1] 金洪震[1] 蔡晓鸥[2] 毛和法[1] 

机构地区：[1]浙江师范大学信息光学研究所,金华321004 [2]温州师范学院物理系,温州325003

出　　处：《光子学报》2005年第10期1537-1541,共5页Acta Photonica Sinica

基　　金：浙江省自然科学基金(102056);浙江省科技计划项目(2003C31011)资助

摘　　要：提出利用查表方法进行数字彩虹全息的计算方法.根据彩虹全息的基元全息图为线全息图的特点,找出物点与其线全息图的一一对应关系,建立空间点阵物点的线全息物光分布数据表.在对实际物体进行计算时,根据物点的位置,在数据表中找到与之对应的物光分布,并将这些分布进行叠加,从而形成实际物体被狭缝限制的物光分布,最后引入参考光计算其彩虹全息图.本方法充分利用了线全息图的性质,使得计算量大大减小,同时提高了计算速度.A new method to make computer generated rainbow hologram using look-table is proposed. According to the relation of object point position with its line-element hologram, an object light distribution data table is established. This data table contains the line-element hologram＇s object light digital distribution of all possible object points. For any actual objects, its all sample points＇ light distribution can be obtained by looking the data table. Adding all the sample points＇ light distribution, the actual object＇s light distribution can be got. Computer-generated rain-bow hologram can be made by calculating interference fringe of the object light distribution and of reference light. This method well utilizes the characters of line-element hologram to increase computing speed.

关 键 词：计算机制全息图 彩虹全息图 查表法 

分 类 号：O438.1[机械工程—光学工程]