Full simulation model for laser triangulation measurement in an inhomogeneous refractive index field

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dc.identifier.uri http://dx.doi.org/10.15488/4914
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4957
dc.contributor.author Beermann, Rüdiger
dc.contributor.author Quentin, Lorenz
dc.contributor.author Stein, Gunnar
dc.contributor.author Reithmeier, Eduard
dc.contributor.author Kaestner, Markus
dc.date.accessioned 2019-05-31T07:44:51Z
dc.date.available 2019-05-31T07:44:51Z
dc.date.issued 2018
dc.identifier.citation Beermann, R.; Quentin, L.; Stein, G.; Reithmeier, E.; Kaestner, M.: Full simulation model for laser triangulation measurement in an inhomogeneous refractive index field. In: Optical Engineering 57 (2018), Nr. 11, 114107. DOI: https://doi.org/10.1117/1.OE.57.11.114107
dc.description.abstract The optical inspection of wrought hot workpieces between subsequent forming steps of a multistage process chain can yield diverse advantages. Deficient components can be detected in an early forming stage. Moreover, the eliminated cooling economizes heating energy. The present workpiece temperature can be exploited in the following chain steps. Challenges arise due to the heat input into the air surrounding the work-piece, as triangulation techniques rely on homogeneous optical conditions. The effect of an inhomogeneous refractive index field (RIF) in air on a 3-D geometry measurement by optical triangulation is modeled exemplary by a virtual measurement of a hot cylinder. To our knowledge, this is the first simulation approach that fully considers both light deflection from the illumination unit to object and from object to camera. Simulated measurement results in a homogeneous and an inhomogeneous RIF are compared. The presented approach predicts measurement deviations in inhomogeneous optical media and can help to design actuated or computer-assisted compensation routines in order to reduce deflection effects when measuring hot objects. eng
dc.language.iso eng
dc.publisher Bellingham, WA : SPIE - International Society for Optical Engineering
dc.relation.ispartofseries Optical Engineering 57 (2018), Nr. 11
dc.rights CC BY 3.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/3.0/
dc.subject triangulation eng
dc.subject inhomogeneous media eng
dc.subject light deflection eng
dc.subject refractive index eng
dc.subject hot workpiece eng
dc.subject simulation eng
dc.subject light section method eng
dc.subject hybrid component eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Full simulation model for laser triangulation measurement in an inhomogeneous refractive index field
dc.type Article
dc.type Text
dc.relation.essn 1560-2303
dc.relation.issn 0091-3286
dc.relation.doi https://doi.org/10.1117/1.OE.57.11.114107
dc.bibliographicCitation.issue 11
dc.bibliographicCitation.volume 57
dc.bibliographicCitation.firstPage 114107
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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