{"title":"A Study of Three-Dimensional Measurement By Transmission Deflectometry and Hilbert Transform","authors":"Silin Na, Younghun Yu","doi":"10.3807/KJOP.2016.27.2.061","DOIUrl":null,"url":null,"abstract":"We used transmission deflectometry to measure the three-dimensional shapes of optical components, and we used the Hilbert transform to retrieve the phases from measured deformed fringe images. Deflectometry is useful for measuring large-scale samples, and specular samples. We have retrieved the phases from deformed fringe images and Hilbert-transformed images, and have used the least-squares method to find the height information. We have verified that phase retrieval using Hilbert transform is useful by computer simulation and experiment.Keywords: Deflrctometry, Phase measuring deflectometry, Hilbert transformOCIS codes: (120.0120) Instrumentation, measurement, and metrology; (120.2650) Fringe analysis; (120.3940) Metrology","PeriodicalId":42467,"journal":{"name":"Korean Journal of Optics and Photonics","volume":"27 1","pages":"61-66"},"PeriodicalIF":0.1000,"publicationDate":"2016-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Korean Journal of Optics and Photonics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3807/KJOP.2016.27.2.061","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
We used transmission deflectometry to measure the three-dimensional shapes of optical components, and we used the Hilbert transform to retrieve the phases from measured deformed fringe images. Deflectometry is useful for measuring large-scale samples, and specular samples. We have retrieved the phases from deformed fringe images and Hilbert-transformed images, and have used the least-squares method to find the height information. We have verified that phase retrieval using Hilbert transform is useful by computer simulation and experiment.Keywords: Deflrctometry, Phase measuring deflectometry, Hilbert transformOCIS codes: (120.0120) Instrumentation, measurement, and metrology; (120.2650) Fringe analysis; (120.3940) Metrology
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