Sampling moiré method: A more exact solution
An important task in the sampling moiré method is phase measurement of a grating image by using the phase of the moiré fringe from a single-shot image. In the method, by thinning out the image, one gets N phase-shifted moiré fringes, where N is called the thinning-out index. In the conventional trea...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Results in Optics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666950123000159 |
| _version_ | 1797904279733796864 |
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| author | Mohammad Abolhassani |
| author_facet | Mohammad Abolhassani |
| author_sort | Mohammad Abolhassani |
| collection | DOAJ |
| description | An important task in the sampling moiré method is phase measurement of a grating image by using the phase of the moiré fringe from a single-shot image. In the method, by thinning out the image, one gets N phase-shifted moiré fringes, where N is called the thinning-out index. In the conventional treatment, they are considered as phase-shifted patterns with shifts equal to multiples of 2π/N. This is not an exact supposition. It is shown in this work that the exact magnitude of the phase shift is 2π/T, where T is the period of the grating image. According to this fact, the formalism of the technique is modified. The simulation results verify the correctness of the theoretical results. |
| first_indexed | 2024-04-10T09:46:23Z |
| format | Article |
| id | doaj.art-5a0f82c630bc4d71b5e2e14e65b04352 |
| institution | Directory Open Access Journal |
| issn | 2666-9501 |
| language | English |
| last_indexed | 2024-04-10T09:46:23Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Optics |
| spelling | doaj.art-5a0f82c630bc4d71b5e2e14e65b043522023-02-17T04:55:59ZengElsevierResults in Optics2666-95012023-02-0110100363Sampling moiré method: A more exact solutionMohammad Abolhassani0Department of Physics, Faculty of Science, Arak University, Arak, 38156-8-8349, IranAn important task in the sampling moiré method is phase measurement of a grating image by using the phase of the moiré fringe from a single-shot image. In the method, by thinning out the image, one gets N phase-shifted moiré fringes, where N is called the thinning-out index. In the conventional treatment, they are considered as phase-shifted patterns with shifts equal to multiples of 2π/N. This is not an exact supposition. It is shown in this work that the exact magnitude of the phase shift is 2π/T, where T is the period of the grating image. According to this fact, the formalism of the technique is modified. The simulation results verify the correctness of the theoretical results.http://www.sciencedirect.com/science/article/pii/S2666950123000159Sampling moiré methodPhase shift calculation |
| spellingShingle | Mohammad Abolhassani Sampling moiré method: A more exact solution Results in Optics Sampling moiré method Phase shift calculation |
| title | Sampling moiré method: A more exact solution |
| title_full | Sampling moiré method: A more exact solution |
| title_fullStr | Sampling moiré method: A more exact solution |
| title_full_unstemmed | Sampling moiré method: A more exact solution |
| title_short | Sampling moiré method: A more exact solution |
| title_sort | sampling moire method a more exact solution |
| topic | Sampling moiré method Phase shift calculation |
| url | http://www.sciencedirect.com/science/article/pii/S2666950123000159 |
| work_keys_str_mv | AT mohammadabolhassani samplingmoiremethodamoreexactsolution |