Flexible Calibration Method of Electronically Focus-Tunable Lenses
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2021.3097412
Abstract: The calibration of camera systems employing zoom lenses raises several challenges, as changes in lens control settings introduce various imaging conditions, especially different degrees of defocus. This article presents a Fourier-based defocus calibration method to… read more here.
Keywords: calibration; flexible calibration; calibration method; method ... See more keywords
Compact Photophoretic Trap Volumetric Display Using Focus Tunable Lens
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Thrombosis and Haemostasis"
DOI: 10.1364/3d.2020.jth2a.34
Abstract: Conventional photophoretic trap volumetric display moves the particle along the optical axis with a bulky linear stage. Here, we used a focus tunable lens to display patterns along the optical axis in a compact system. read more here.
Keywords: tunable lens; photophoretic trap; volumetric display; trap volumetric ... See more keywords
Monocular depth estimation method using a focus tunable lens.
Sign Up to like & getrecommendations! Published in 2019 at "Applied optics"
DOI: 10.1364/ao.58.000g52
Abstract: We propose a method for the passive-type estimation of depth using a focus tunable lens. The proposed method utilizes a lens group and a focus tunable lens and charge coupled device. The target object is… read more here.
Keywords: tunable lens; focus; estimation; focus tunable ... See more keywords
Coherence scanning interferometry with a focus-tunable lens.
Sign Up to like & getrecommendations! Published in 2019 at "Applied optics"
DOI: 10.1364/ao.58.000g91
Abstract: Coherence scanning interferometry is an established optical method that is able to measure the shape of objects with high precision. The surface of the object to be measured can be both optically smooth and optically… read more here.
Keywords: coherence scanning; tunable lens; scanning interferometry; focus tunable ... See more keywords
Optical performance evaluation and chromatic aberration correction of a focus tunable lens used for 3D microscopy.
Sign Up to like & getrecommendations! Published in 2019 at "Biomedical optics express"
DOI: 10.1364/boe.10.006029
Abstract: Recently, the development of motion-free 3D microscopy utilizing focus tunable lenses (FTL) has been rapid. However, the downgrade of optical performance due to FTL and its gravity effect are rarely discussed in detail. Also, color… read more here.
Keywords: optical performance; microscopy; correction; focus tunable ... See more keywords
Optimizing depth-of-field extension in optical sectioning microscopy techniques using a fast focus-tunable lens.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.016783
Abstract: Volume imaging based on a fast focus-tunable lens (FTL) allows three-dimensional (3D) observation within milliseconds by extending the depth-of-field (DOF) with sub-micrometer transverse resolution on optical sectioning microscopes. However, the previously published DOF extensions were… read more here.
Keywords: fast focus; tunable lens; microscopy; depth field ... See more keywords
High-speed coherent diffraction imaging by varying curvature of illumination with a focus tunable lens.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.403147
Abstract: A high-speed coherent diffraction imaging method is proposed by varying the curvature of illumination with a focus tunable lens. The imaging setup is free of conventional mechanical translation and takes only milliseconds to refocus by… read more here.
Keywords: tunable lens; focus tunable; diffraction imaging; diffraction ... See more keywords
Design and fabrication of a focus-tunable liquid cylindrical lens based on electrowetting.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.478130
Abstract: In this study, a focus-tunable liquid cylindrical lens based on electrowetting was designed and fabricated. The cylindrical cavity usually used in common electrowetting zoom spherical lenses was replaced by a 20 mm × 10 mm × 8 mm cuboid… read more here.
Keywords: tunable liquid; liquid cylindrical; cylindrical lens; based electrowetting ... See more keywords
Movable and Focus-Tunable Lens Based on Electrically Controllable Liquid: A Lattice Boltzmann Study
Sign Up to like & getrecommendations! Published in 2022 at "Entropy"
DOI: 10.3390/e24121714
Abstract: Adjusting the focal length by changing the liquid interface of the liquid lens has become a potential method. In this paper, the lattice-Boltzmann-electrodynamic (LB-ED) method is used to numerically investigate the zooming process of a… read more here.
Keywords: lattice boltzmann; focus tunable; liquid; movable focus ... See more keywords