子区域拼接数字莫尔条纹非球面检测的理论分析  

Theoritical anlysis of asphere testing using digital Moiré patterns base on sub-region stitching method

作　　者：满玉春[1] 张学军[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所光学技术中心

出　　处：《光学精密工程》2008年第3期420-425,共6页Optics and Precision Engineering

基　　金：国家杰出青年基金资助项目(No.69925512)

摘　　要：为解决利用莫尔条纹测量大口径、高陡度非球面或离轴非球面时受光栅面积、CCD相机分辨能力等因素限制的问题,提出了利用数字莫尔条纹(结合数字相移技术)进行子区域拼接的非球面检测方法。给出了这种方法的基本原理,并对其步骤的实现、数学模型的建立、拼接算法的开发进行了分析和研究。结果表明,子区域拼接数字莫尔条纹法可以作为补偿检验以外的另一种非球面检测方式。In order to measure 3D shape by Moiré patterns to resolve some problems on the negative effect of grating area and the CCD resolution of camera in testing for a large aperture,steep aspheric surface,even an off-axis asphere,a sub-region stitching measurement method by the combination of digital Moire patterns and digital phase shifting technology was presented.The basic principle of the sub-region stitching method was proposed,the measuring steps were analyzed and the mathematical model establishment and th...

关 键 词：非球面检验 数字莫尔条纹 子区域拼接 最小二乘拟合 

分 类 号：TG806[金属学及工艺—公差测量技术]