High-speed color three-dimensional measurement based on parallel confocal detection with a focus tunable lens

Cited 3 time in webofscience Cited 0 time in scopus
  • Hit : 69
  • Download : 0
Reflectance confocal microscopy is a widely used optical imaging technique for non-destructive three-dimensional (3D) surface measurement. In confocal microscopy, a stack of two-dimensional (2D) images along the axial position is used for 3D reconstruction. This means the speed of 3D volumetric acquisition is limited by the beam scanning and the mechanical axial scanning. To achieve fast volumetric imaging, simultaneous multiple point scanning by parallelizing the beam instead of transverse point scanning can be considered, using a pinhole array. Previously, we developed a direct-view confocal microscope with a focus tunable lens (FTL) to produce a monochrome 3D surface profile of a sample without any mechanical scanning. Here, we report a high-speed color 3D measurement method based on parallel confocal detection. The proposed method produces a color 3D image of an object by acquiring 180 2D color images with an acquisition time of 1 second. We also visualized the color information of the object by overlaying the color obtained with a color area detector and a white LED illumination on top of the 3D surface profile. In addition, we designed an improved optical system to reduce artifacts caused by internal reflections and developed a new algorithm for noise-resistant 3D measurements. The feasibility of the proposed non-contact high-speed color 3D measurement for use in industrial or biomedical fields was demonstrated by imaging the color 3D shapes of various specimens. We anticipate that this technology can be utilized in various fields, where rapid 3D surface profiles with color information are required. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Publisher
OPTICAL SOC AMER
Issue Date
2019-09
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.27, no.20, pp.28466 - 28479

ISSN
1094-4087
DOI
10.1364/OE.27.028466
URI
http://hdl.handle.net/10203/268042
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
000488282800110.pdf(1.13 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 3 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0