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Optical System Design for Chromatic Confocal Displacement Probes

2023 28th International Conference on Automation and Computing (ICAC), 2023
The Displacement probe is an important part of chromatic confocal systems, and its imaging capabilities directly affect the performance of the system. The optical structure of the probe is usually designed as a whole, but there are many variables that ...
Ailin Zhang   +4 more
openaire   +2 more sources

A new signal processing method for a differential chromatic confocal probe with a mode-locked femtosecond laser

Measurement Science and Technology, 2020
Abstract This paper presents an improved data processing method, which is referred to as the tracking intersection method, for a fibre-based dual-detector differential chromatic confocal probe with a mode-locked femtosecond laser source.
Ryo Sato   +4 more
openaire   +2 more sources

Determination of wear volumes by chromatic confocal measurements during twin-disc tests with cast iron and steel [PDF]

open access: yesWear, 2015
A novel method for in situ profile measurements on rolling contact test specimens has been demonstrated. A chromatic confocal probe was integrated into a twin-disc machine and used for disc profile measurements during periodically interrupted wear tests.
Peter Andersson, Björn Hemming
exaly   +3 more sources

Spectral optimization and influence of noise for spectrometer free areal chromatic confocal metrology [PDF]

open access: yesOPTO
The spectrometer-free chromatic confocal measurement technique enables 3D surface measurements with just one exposure and without scanning. To reduce the need for a spectrometer for the spectral analysis of the reflected light composition and thus the ...
Jonas Lochbrunner   +3 more
semanticscholar   +2 more sources

A miniature chromatic confocal sensing probe enabled by metasurfaces

Optical Instrument Science, Technology, and Applications IV
James Williamson   +6 more
openaire   +2 more sources

Thickness measurement method for self-supporting film with double chromatic confocal probes

Applied Optics, 2021
With the randomness and immeasurability properties of zero point, the conventional self-supporting film thickness measurement model must calibrate the distance between two chromatic confocal sensors using a standard part whose thickness needs to be measured by other methods in advance. The measurement performance is easily disturbed
Jiafu Li   +5 more
openaire   +2 more sources

Comparison of tactile and chromatic confocal measurements of aspherical lenses for form metrology [PDF]

open access: yesInternational Journal of Precision Engineering and Manufacturing, 2014
Both contact and non-contact probes are often used in dimensional metrology applications, especially for roughness, form and surface profile measurements.
Anwer Nabil   +2 more
exaly   +3 more sources

Characterization of the main error sources of chromatic confocal probes for dimensional measurement

Measurement Science and Technology, 2014
Chromatic confocal probes are increasingly used in high-precision dimensional metrology applications such as roughness, form, thickness and surface profile measurements; however, their measurement behaviour is not well understood and must be characterized at a nanometre level.
H Nouira, N El-Hayek, X Yuan, N Anwer
openaire   +1 more source

High precision roundness measurement with two chromatic confocal sensors

Optical Metrology and Inspection for Industrial Applications VIII, 2021
As a fundamental geometric indicator, high precision roundness measurement is the basis evaluation index of cylindrical or spherical parts. In most roundness measurements, the rotation platforms are used to bring certain rotation error to the measurement
Yingzuo Wang   +5 more
semanticscholar   +1 more source

Influence of eccentricity and tilt of radial GRIN lens on its thickness measurement by chromatic confocal technology

Optical Engineering: The Journal of SPIE, 2021
. The chromatic confocal technology (CCT) has ultra-high distance measurement resolution and the characteristics of multi-surface tomography. Based on the principle of optical dispersion and confocal, the technology achieves accurate axial position or ...
Chun-yan Li   +4 more
semanticscholar   +1 more source

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