{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,19]],"date-time":"2026-01-19T01:02:35Z","timestamp":1768784555868,"version":"3.49.0"},"reference-count":30,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2022,12,7]],"date-time":"2022-12-07T00:00:00Z","timestamp":1670371200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["52075190"],"award-info":[{"award-number":["52075190"]}]},{"name":"National Natural Science Foundation of China","award":["62075067"],"award-info":[{"award-number":["62075067"]}]},{"name":"National Natural Science Foundation of China","award":["2019I0013"],"award-info":[{"award-number":["2019I0013"]}]},{"name":"National Natural Science Foundation of China","award":["QCKJ202006"],"award-info":[{"award-number":["QCKJ202006"]}]},{"name":"National Natural Science Foundation of China","award":["3502ZCQXT202002"],"award-info":[{"award-number":["3502ZCQXT202002"]}]},{"name":"Science and Technology Program of Fujian, China","award":["52075190"],"award-info":[{"award-number":["52075190"]}]},{"name":"Science and Technology Program of Fujian, China","award":["62075067"],"award-info":[{"award-number":["62075067"]}]},{"name":"Science and Technology Program of Fujian, China","award":["2019I0013"],"award-info":[{"award-number":["2019I0013"]}]},{"name":"Science and Technology Program of Fujian, China","award":["QCKJ202006"],"award-info":[{"award-number":["QCKJ202006"]}]},{"name":"Science and Technology Program of Fujian, China","award":["3502ZCQXT202002"],"award-info":[{"award-number":["3502ZCQXT202002"]}]},{"name":"Open Research Fund of Anhui Engineering Technology Research Center of Automotive New Technique","award":["52075190"],"award-info":[{"award-number":["52075190"]}]},{"name":"Open Research Fund of Anhui Engineering Technology Research Center of Automotive New Technique","award":["62075067"],"award-info":[{"award-number":["62075067"]}]},{"name":"Open Research Fund of Anhui Engineering Technology Research Center of Automotive New Technique","award":["2019I0013"],"award-info":[{"award-number":["2019I0013"]}]},{"name":"Open Research Fund of Anhui Engineering Technology Research Center of Automotive New Technique","award":["QCKJ202006"],"award-info":[{"award-number":["QCKJ202006"]}]},{"name":"Open Research Fund of Anhui Engineering Technology Research Center of Automotive New Technique","award":["3502ZCQXT202002"],"award-info":[{"award-number":["3502ZCQXT202002"]}]},{"name":"Collaborative Innovation Platform of Fuzhou-Xiamen-Quanzhou Independent Innovation Demonstration Area, China","award":["52075190"],"award-info":[{"award-number":["52075190"]}]},{"name":"Collaborative Innovation Platform of Fuzhou-Xiamen-Quanzhou Independent Innovation Demonstration Area, China","award":["62075067"],"award-info":[{"award-number":["62075067"]}]},{"name":"Collaborative Innovation Platform of Fuzhou-Xiamen-Quanzhou Independent Innovation Demonstration Area, China","award":["2019I0013"],"award-info":[{"award-number":["2019I0013"]}]},{"name":"Collaborative Innovation Platform of Fuzhou-Xiamen-Quanzhou Independent Innovation Demonstration Area, China","award":["QCKJ202006"],"award-info":[{"award-number":["QCKJ202006"]}]},{"name":"Collaborative Innovation Platform of Fuzhou-Xiamen-Quanzhou Independent Innovation Demonstration Area, China","award":["3502ZCQXT202002"],"award-info":[{"award-number":["3502ZCQXT202002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Conventional chromatic confocal systems are mostly single-point coaxial illumination systems with a low signal-to-noise ratio, light energy utility and measurement efficiency. To overcome the above shortcomings, we propose a parallel non-coaxial-illumination chromatic-confocal-measurement system based on an optical fiber bundle. Based on the existing single-point non-coaxial-illumination system, the optical fiber bundle is used as the optical beam splitter to achieve parallel measurements. Thus, the system can yield measurements through line scanning, which greatly improves measurement efficiency. To verify the measurement performance of the system, based on the calibration experiment, the system realizes the measurement of the height of the step, the thickness of the transparent specimen and the reconstruction of the three-dimensional topography of the surface of the step and coin. The experimental results show that the measuring range of the system is 200 \u03bcm. The measurement accurcy can reach micron level, and the system can realize a good three-dimensional topography reconstruction effect.<\/jats:p>","DOI":"10.3390\/s22249596","type":"journal-article","created":{"date-parts":[[2022,12,8]],"date-time":"2022-12-08T03:35:53Z","timestamp":1670470553000},"page":"9596","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Design and Research of Chromatic Confocal System for Parallel Non-Coaxial Illumination Based on Optical Fiber Bundle"],"prefix":"10.3390","volume":"22","author":[{"given":"Yali","family":"Zhang","sequence":"first","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8767-3889","authenticated-orcid":false,"given":"Qing","family":"Yu","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"},{"name":"Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chong","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yaozu","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fang","family":"Cheng","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yin","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"},{"name":"Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tianliang","family":"Lin","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"},{"name":"Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2895-9702","authenticated-orcid":false,"given":"Ting","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China"},{"name":"Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery, Huaqiao University, Xiamen 361021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lin","family":"Xi","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Anhui Polytechnic University, Wuhu 241000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Behrends, G., St\u00f6bener, D., and Fischer, A. (2021). Integrated, Speckle-Based Displacement Measurement for Lateral Scanning White Light Interferometry. Sensors, 21.","DOI":"10.3390\/s21072486"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"599","DOI":"10.1007\/s40042-022-00421-1","article-title":"High-precision white light interferometry based on a color CCD and peak matching algorithm","volume":"80","author":"Im","year":"2022","journal-title":"J. Korean Phys. Soc."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Pillarz, M., von Freyberg, A., St\u00f6bener, D., and Fischer, A. (2021). Gear shape measurement potential of laser triangulation and confocal-chromatic distance sensors. Sensors, 21.","DOI":"10.3390\/s21030937"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"106315","DOI":"10.1016\/j.optlaseng.2020.106315","article-title":"Confocal laser scanning and 3D reconstruction methods for the subsurface damage of polished optics","volume":"136","author":"Sun","year":"2021","journal-title":"Opt. Laser Eng."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Ren, H., Liu, Y., Wang, Y., Liu, N., Yu, X., and Su, X. (2021). Uniaxial 3D Measurement with Auto-Synchronous Phase-Shifting and Defocusing Based on a Tilted Grating. Sensors, 21.","DOI":"10.3390\/s21113730"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/j.actaastro.2018.09.031","article-title":"High-resolution surface shape measurement of parabola antenna reflector by using grating projection method with virtual targets","volume":"153","author":"Iwasa","year":"2018","journal-title":"Acta Astronaut."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"107390","DOI":"10.1016\/j.measurement.2019.107390","article-title":"Large-area thickness measurement of transparent multi-layer films based on laser confocal reflection sensor","volume":"153","author":"Choi","year":"2020","journal-title":"Measurement"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"112369","DOI":"10.1016\/j.matchar.2022.112369","article-title":"A structure metric for quantitative assessment of fracture surfaces in 3D conceived based on confocal laser scanning microscopy data","volume":"194","author":"Vasilev","year":"2022","journal-title":"Mater. Charact."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1002\/phvs.201900028","article-title":"Thickness Determination of Transparent Coatings: Considering a correction factor, chromatic confocal sensors can easily be used to determine the thickness of a transparent workpiece","volume":"16","author":"Quinten","year":"2019","journal-title":"PhotonicsViews"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"22737","DOI":"10.1364\/OE.27.022737","article-title":"Characterization of the displacement response in chromatic confocal microscopy with a hybrid radial basis function network","volume":"27","author":"Lu","year":"2019","journal-title":"Opt. Express"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"780","DOI":"10.1016\/j.procir.2020.09.133","article-title":"In-situ measurement of surface roughness using chromatic confocal sensor","volume":"94","author":"Fu","year":"2020","journal-title":"Procedia CIRP"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"025031","DOI":"10.1088\/2051-672X\/ab860b","article-title":"Influence of aberrations and roughness on the chromatic confocal signal based on experiments and wave-optical modeling","volume":"8","author":"Claus","year":"2020","journal-title":"Surf. Topogr. Metrol. Prop."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"036103","DOI":"10.1063\/1.5100851","article-title":"A new method for detecting surface defects on curved reflective optics using normalized reflectivity","volume":"91","author":"Du","year":"2020","journal-title":"Rev. Sci. Instrum."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"105403","DOI":"10.1088\/1361-6501\/ac0b6c","article-title":"Smart data driven defect detection method for surface quality control in manufacturing","volume":"32","author":"Chouhad","year":"2021","journal-title":"Meas. Sci. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"073706","DOI":"10.1063\/1.3184023","article-title":"Three-dimensional surface profile measurement using a beam scanning chromatic confocal microscope","volume":"80","author":"Chun","year":"2009","journal-title":"Rev. Sci. Instrum."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"7511","DOI":"10.1364\/AO.428374","article-title":"Compact scanning confocal chromatic sensor enabling precision 3-D measurements","volume":"60","author":"Wertjanz","year":"2021","journal-title":"Appl. Opt."},{"key":"ref_17","first-page":"652","article-title":"Survey of parallel light source technology in parallel confocal measurement","volume":"6","author":"Yu","year":"2013","journal-title":"Chin. Opt."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"15656","DOI":"10.1364\/OE.15.015656","article-title":"High speed optically sectioned fluorescence lifetime imaging permits study of live cell signaling events","volume":"15","author":"Grant","year":"2007","journal-title":"Opt. Express"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1417","DOI":"10.1364\/OE.21.001417","article-title":"Multi-beam confocal microscopy based on a custom image sensor with focal-plane pinhole array effect","volume":"21","author":"Kagawa","year":"2013","journal-title":"Opt. Express"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"120","DOI":"10.1364\/AO.35.000120","article-title":"Theoretical analysis of confocal microscopy with microlenses","volume":"35","author":"Tiziani","year":"1996","journal-title":"Appl. Opt."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1780","DOI":"10.1364\/OL.25.001780","article-title":"Fiber-optic confocal microscopy using a spatial light modulator","volume":"25","author":"Lane","year":"2000","journal-title":"Opt. Lett."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Hou, W., and Zhang, Y. (2011, January 7\u201311). Fast parallel 3D profilometer with DMD technology. Proceedings of the Seventh International Symposium on Precision Engineering Measurements and Instrumentation, Yunnan, China.","DOI":"10.1117\/12.903771"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1838","DOI":"10.1364\/AO.33.001838","article-title":"Three-dimensional image sensing by chromatic confocal microscopy","volume":"33","author":"Tiziani","year":"1994","journal-title":"Appl. Opt."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"32","DOI":"10.1117\/1.602332","article-title":"Confocal principle for macro-and microscopic surface and defect analysis","volume":"39","author":"Tiziani","year":"2000","journal-title":"Opt. Eng."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"4694","DOI":"10.1364\/OL.38.004694","article-title":"Spectrally multiplexed chromatic confocal multipoint sensing","volume":"38","author":"Hillenbrand","year":"2013","journal-title":"Opt. Lett."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"4927","DOI":"10.1364\/AO.54.004927","article-title":"Chromatic confocal matrix sensor with actuated pinhole arrays","volume":"54","author":"Hillenbrand","year":"2015","journal-title":"Appl. Opt."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"053707","DOI":"10.1063\/5.0043922","article-title":"A line-scanning chromatic confocal sensor for three-dimensional profile measurement on highly reflective materials","volume":"92","author":"Hu","year":"2021","journal-title":"Rev. Sci. Instrum."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"110140","DOI":"10.1016\/j.measurement.2021.110140","article-title":"A novel chromatic confocal one-shot 3D measurement system based on DMD","volume":"186","author":"Yu","year":"2021","journal-title":"Measurement"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"3183","DOI":"10.1364\/AO.388123","article-title":"Chromatic confocal displacement sensing at oblique incidence angles","volume":"59","author":"Berkovic","year":"2020","journal-title":"Appl. Opt."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Yu, Q., Zhang, Y., Shang, W., Dong, S., Wang, C., Wang, Y., Liu, T., and Cheng, F. (2021). Thickness measurement for glass slides based on chromatic confocal microscopy with inclined illumination. Photonics, 8.","DOI":"10.3390\/photonics8050170"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/24\/9596\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:35:56Z","timestamp":1760146556000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/24\/9596"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,12,7]]},"references-count":30,"journal-issue":{"issue":"24","published-online":{"date-parts":[[2022,12]]}},"alternative-id":["s22249596"],"URL":"https:\/\/doi.org\/10.3390\/s22249596","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,12,7]]}}}