8 October 2015 Moiré fringe method for roll angular displacement measurement
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Proceedings Volume 9677, AOPC 2015: Optical Test, Measurement, and Equipment; 96771R (2015) https://doi.org/10.1117/12.2199823
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Abstract
In the three-dimensional angle measurement, yaw and pitch angle can be detected easily by several convention optical devices. While the roll angle is difficult to measure since its rotation axis is parallel to the incident plane. This work is based on the application of the Talbot effect with a Ronchi grating. The period of Moiré fringes which generated by two gratings will be changed with small rotation. The roll angle can be calculated by the width change of fringes.
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Xue Yu, Chao Liu, Xian Xie, Yaopu Lang, Qinggang Liu, "Moiré fringe method for roll angular displacement measurement", Proc. SPIE 9677, AOPC 2015: Optical Test, Measurement, and Equipment, 96771R (8 October 2015); doi: 10.1117/12.2199823; https://doi.org/10.1117/12.2199823
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