Theory analysis of aspherical testing using the digital moiré patterns base on the sub_region stitching method

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Theory analysis of aspherical testing using the digital moiré patterns base on the sub_region stitching method

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- Theory analysis of aspherical testing using the digital moiré patterns base on the sub_region stitching method
- Optics and Precision Engineering Vol. 16, Issue 3, Pages: 420-425(2008)
- 作者机构：
  
  1. 长春光机所
  2. 吉林建筑工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：18 July 2007，
  
  Revised：22 October 2007，
  
  Published Online：22 March 2008，
  
  Published：22 March 2008
- 稿件说明：
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manyuchun. 子区域拼接数字莫尔条纹非球面检测的理论分析[J]. 光学精密工程, 2008,16(3):420-425

Theory analysis of aspherical testing using the digital moiré patterns base on the sub_region stitching method[J]. Optics and precision engineering, 2008, 16(3): 420-425.
manyuchun. 子区域拼接数字莫尔条纹非球面检测的理论分析[J]. 光学精密工程, 2008,16(3):420-425 DOI：

Theory analysis of aspherical testing using the digital moiré patterns base on the sub_region stitching method[J]. Optics and precision engineering, 2008, 16(3): 420-425. DOI：

摘要

利用moire 条纹测量三维物体表面，由于这种方法具有非接触性、自动化程度高、速度快等特点。并且不需要补偿器、辅助镜、全息图等辅助组件就可以实现非球面检测，使其得到广泛的应用。但在测量大口径、高陡度非球面以至离轴非球面时，受到光栅面积、CCD相机分辨能力等因素的限制；存在着一些困难，就此问题，本文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，阐述了方法的数学实现过程，结果显示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

Abstract

With the characteristics of un-touching

high-automatic and high-speed

we measured 3D shape by digital moiré patterns. And it can measure 3D shape without compensator

auxiliary mirror

hologram and other assistant modules. So it is widely used in measurement of 3D shape. But with the negative effect of grating area and CCD resolution of the camera

it has some problems in large aperture

steep aspheric surface

even off-axis asphere testing. Focus on these problems; this paper established a sub-region stitching measurement of asphere by using the combination of digital moire patterns and digital phase shifting technology. This paper also illustrated the basic theory

and the mathematical implementation procedure. In all

sub-region stitching digital moiré patterns can be considered as another method

which beyond compensation tests to measurement of asphere.

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