Application of digital holographic interferometry based on EALCD for measurement of displacement

Jun Guo; Wanyi Zhang; Hui Dong; Yan Zhou; Wensheng Wang

doi:10.1117/12.885365

28 December 2010 Application of digital holographic interferometry based on EALCD for measurement of displacement

Jun Guo, Wanyi Zhang, Hui Dong, Yan Zhou, Wensheng Wang

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75442I (2010) https://doi.org/10.1117/12.885365
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

Real-time test is one of the important parts in digital holographic interferometry researches. In this paper, taking advantage of electrically addressed liquid crystal display(EALCD) features of real-timely writing in and reading out images, the digital holographic interferometry system for real-time measurement of displacement is designed. In order to raise the contrast of the holographic hologram, the image enhancement based on the Laplacian operator has been used to process holograms. Based many advantages of CCD and EALCD, the holographic interferogram with high contrast can be obtained quickly, which can realize the precise measurement of small deformation and displacement of objects. Moreover, the measurement efficiency and precision is raised greatly.

Citation Download Citation

Jun Guo, Wanyi Zhang, Hui Dong, Yan Zhou, and Wensheng Wang "Application of digital holographic interferometry based on EALCD for measurement of displacement", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75442I (28 December 2010); https://doi.org/10.1117/12.885365

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