Poster + Paper
15 August 2023 Shape measurement of phase objects using fringe projection technique
V. Trivedi, M. Joglekar, S. Utadiya, N. Chhiller, S. Sharma, G. Sheoran, A. Anand
Author Affiliations +
Conference Poster
Abstract
Due to the advancements in the field of optical metrology, it has found its applications in various areas such as biomedical, automotive, semiconductors, aerospace, etc. The popularity of optical techniques for metrology has increased by multiple folds owing to its non-invasive nature with ease of setup, fast data acquisition, and remote sensing ability. Optical techniques include hologram interferometry, speckle photography, speckle interferometry, Moire interferometry, photoelasticity, fringe projection technique, etc. The holographic interferometry technique works by quantifying the optical phase of the object by measuring the change in the interference fringes due to the shape of an object. This technique has a large number of advantages, but a steep object leads to a large number of fringes in the field of view, which are not resolvable as they fail to satisfy the Nyquist criterion. In this work, the fringe projection technique, which is a non-interferometric, non-invasive technique for generating 3D surface information is employed to measure the shape of a phase object like a wedge. Fringe projection is presented as a robust and compact technique for shape measurement of phase objects as it utilizes lesser components and has less complexity compared to the holographic technique.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
V. Trivedi, M. Joglekar, S. Utadiya, N. Chhiller, S. Sharma, G. Sheoran, and A. Anand "Shape measurement of phase objects using fringe projection technique", Proc. SPIE 12618, Optical Measurement Systems for Industrial Inspection XIII, 126182S (15 August 2023); https://doi.org/10.1117/12.2673865
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KEYWORDS
Fringe analysis

Phase measurement

Modulation

Phase distribution

3D metrology

Geometrical optics

Optical components

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