Zobrazeno 1 - 10
of 1 652
pro vyhledávání: '"Deflectometry"'
Autor:
Song Yang, Xianyong Zhu, Zhirui Cao, Jiali Zhao, Xiong Xiao, Changchun Lv, Yang Du, Ruiqing Wang, Peng Wu, Zheyuan Wang
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-21 (2024)
Abstract Based on the polynomial theory, the error propagation characteristics of the widely used N-step discrete Fourier transform (N-DFT) phase-shift algorithm were analyzed via theoretical analysis, under the effect of Gamma distortion and phase d
Externí odkaz:
https://doaj.org/article/4b2482f61ea54d89b0dcb5a83f1d57e0
Autor:
Ralf D. Geckeler, Andreas Just, Michael Krause, Olaf Schnabel, Ian Lacey, Damon English, Valeriy V. Yashchuk
Publikováno v:
Journal of Synchrotron Radiation, Vol 31, Iss 4, Pp 670-680 (2024)
Deflectometric profilometers are used to precisely measure the form of beam shaping optics of synchrotrons and X-ray free-electron lasers. They often utilize autocollimators which measure slope by evaluating the displacement of a reticle image on a d
Externí odkaz:
https://doaj.org/article/4d6fd33e1af3439b8a9b4ec9fdd5cdcb
Autor:
Braden Smith, Randy Brost
Publikováno v:
SolarPACES Conference Proceedings, Vol 2 (2024)
Concentrating Solar Power (CSP) mirrors must have high slope accuracy in order to achieve high solar concentration. Deflectometry is an established method for measuring high-resolution, high-accuracy maps of mirror slope. In this paper we describe im
Externí odkaz:
https://doaj.org/article/ad22b08fe52049288560ec0eefa0f362
Publikováno v:
SolarPACES Conference Proceedings, Vol 2 (2024)
Concentrating solar mirrors need to accurately focus sunlight onto a receiver. Since mirror surface normal determines reflected light direction, reflection-based metrology methods that measure surface normal have the advantage of directly measuring t
Externí odkaz:
https://doaj.org/article/81ec4d8581c24e8cae8e9148c44a4b74
Publikováno v:
Applied Sciences, Vol 14, Iss 23, p 10824 (2024)
Deflectometry is a key component in the precise measurement of specular (mirrored) surfaces; however, traditional methods often lack an end-to-end approach that performs 3D reconstruction in a single shot with high accuracy and generalizes across dif
Externí odkaz:
https://doaj.org/article/2b261662a7bc4998ad534d76c63cf0fd
Akademický článek
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Akademický článek
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Autor:
Yingmo Wang, Fengzhou Fang
Publikováno v:
Sensors, Vol 24, Iss 19, p 6321 (2024)
Replacing the endocentric lenses in traditional Phase-Measuring Deflectometry (PMD) with bi-telecentric lenses can reduce the number of parameters to be optimized during the calibration process, which can effectively increase both measurement precisi
Externí odkaz:
https://doaj.org/article/a9bc2741213c4ac1af5c3952712cfee1
Publikováno v:
Sensors, Vol 24, Iss 9, p 2693 (2024)
Flatness is a critical parameter in the manufacturing industry, directly impacting the fit and overall product performance. As the efficiency of manufacturing continues to advance, there is an increasing demand for more accurate and efficient measure
Externí odkaz:
https://doaj.org/article/089e70772e6245c4bad36555b6316290
Publikováno v:
SolarPACES Conference Proceedings, Vol 1 (2023)
NREL has completed stage 1 development of an indoor optical measurement tool for fully assembled heliostats and single facets. This tool began as an indoor version of NREL’s outdoor Non-Intrusive Optical (NIO) measurement technique [1]. It uses sim
Externí odkaz:
https://doaj.org/article/6411df32c0b642c8a337c9e922b2aa49