High-speed 3-D measurement with a large field of view based on direct-view confocal microscope with an electrically tunable lens

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We propose a new structure of confocal imaging system based on a direct-view confocal microscope (DVCM) with an electrically tunable lens (ETL). Since it has no mechanical moving parts to scan both the lateral (x-y) and axial (z) directions, the DVCM with an ETL allows for highspeed 3-dimensional (3-D) imaging. Axial response and signal intensity of the DVCM were analyzed theoretically according to the pinhole characteristics. The system was designed to have an isotropic spatial resolution of 20 mu m in both lateral and axial direction with a large field of view (FOV) of 10 x 10 mm. The FOV was maintained according to the various focal shifts as a result of an integrated design of an objective lens with the ETL. The developed system was calibrated to have linear focal shift over a range of 9 mm with an applied current to the ETL. The system performance of 3-D volume imaging was demonstrated using standard height specimens and a dental plaster.
Publisher
OPTICAL SOC AMER
Issue Date
2016-02
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.24, no.4, pp.3806 - 3816

ISSN
1094-4087
DOI
10.1364/OE.24.003806
URI
http://hdl.handle.net/10203/208344
Appears in Collection
ME-Journal Papers(저널논문)
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