改善全息圆锥准直线及提高准直精度的一种方法  

AN IMPROVEMENT ON ALIGNMENT PRECISION BY SPATIAL FILTERING IN A CONE WAVE GENERATED BY CGH

作　　者：刘铁英[1] 郑刚[1] 顾去吾[1] 

机构地区：[1]上海机械学院仪器仪表学院

出　　处：《上海机械学院学报》1993年第1期58-62,共5页

摘　　要：用一张计算全息图可产生锥面波,锥面波衍射图样的中心在空间是连续的,可作为直线基准。本文提出了提高锥面波直线准直精度的一种方法即空间滤波法。实验结果与理论分析一致。A cone wave can be generated by a CGH. The centre of the diffraction pattern of the cone wave is continuous in space and can be used as an alignment straight lint. In this paper, we demonstrate that the alignment precision can be improved by a spatial filter, which filters out the zero-order frequency of the cone wave. The experimental result is fully in agreement with the theoretical analysis.

关 键 词：锥面波 激光准直 空间滤波 全息图 

分 类 号：TB877[一般工业技术—摄影技术]