Laser & Optoelectronics Progress, Volume. 56, Issue 6, 062001(2019)
Method of Measuring Grating Constant Based on Moiré Measurement Technology
Based on Moiré measurement technology, a method of measuring grating constant with simple setup and higher measurement precision is presented. The standard gratings with grating constants of 0.05 mm and 0.02 mm as well as corresponding grating to be measured are selected for experiments. In the experiment, three levels of Moiré fringes with high light intensity and high contrast are obtained, namely -1 level, 0 level and +1 level. The grating constant and its error of the grating to be measured are calculated. Results show that the error tends to increase with the increase of the angle between the standard grating and the grating be to measured.
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Weihao Cheng, Yunyun Chen, Chuansen Duan, Tao Liang, Yusong Li. Method of Measuring Grating Constant Based on Moiré Measurement Technology[J]. Laser & Optoelectronics Progress, 2019, 56(6): 062001
Category: Optics in Computing
Received: Jul. 20, 2018
Accepted: Oct. 16, 2018
Published Online: Jul. 30, 2019
The Author Email: Chen Yunyun (yunqq321@sina.cn)