Optical Analysis of Moire Fringes of Concentric-Circle Gratings

被引：3

作者：

Zhai Zhongsheng ^{[1
]}

Cheng Zhuang ^{[1
]}

Zhang Yanhong ^{[1
]}

Zhou Xiangdong ^{[1
]}

Lu Qinghua ^{[2
]}

Wang Xuanze ^{[1
]}

机构：

[1] Hubei Univ Technol, Sch Mech Engn, Hubei Key Lab Modern Mfg Quant Engn, Wuhan 430068, Hubei, Peoples R China

[2] Hubei Univ Technol, Sch Sci, Wuhan 430068, Hubei, Peoples R China

来源：

LASER & OPTOELECTRONICS PROGRESS | 2018年 / 55卷 / 07期

关键词：

gratings; concentric-circle grating; moire pattern for ellipses; moire pattern for hyperbolas; hologram; low-pass filter;

D O I：

10.3788/LOP55.070501

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Moire fringe expressions in many cases arc analyzed and verified via simulation based on the shadow shading and spectrum analysis principles. The influence laws of the center distance of two gratings and the number of the intersection points for bright fringes on the patterns of the families of hyperbolic and elliptic moire fringes arc obtained. The research results show that the family of hyperbolic moire fringes has more advantages on discrimination and measurement than that of elliptic moire fringes. Based on the transmittance function of concentric-circle gratings and the computer-generated hologram, the moire fringes of this concentric-circle grating can be generated by the use of spatial light modulator. With magnification and the suitable low-pass filter, the hyperbolic moire fringes widely used in engineering arc obtained.

引用

页数：7

共 20 条

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