Simple, non-mechanical and automatic calibration approach for axial-scanning microscopy with an electrically tunable lens.
Sign Up to like & getrecommendations! Published in 2023 at "Microscopy research and technique"
DOI: 10.1002/jemt.24337
Abstract: We describe a simple and robust calibration approach for axial-scanning microscopy that realizes axial focus shifts with an electrically tunable lens (ETL). We demonstrate the calibration approach based on a microscope with an ETL placed… read more here.
Keywords: calibration approach; electrically tunable; calibration; microscopy ... See more keywords
Modelling of a soft tunable lens actuated by an annular dielectric elastomer actuator with homogeneous and inhomogeneous prestretches
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/abee43
Abstract: Unlike the conventional tunable lens which contains cumbersome elements to fulfill the focus adjustment, soft liquid lens shows distinct advantages in compactness and flexibility. This paper presents a computational model of a dielectric elastomer (DE)-based,… read more here.
Keywords: homogeneous inhomogeneous; tunable lens; dielectric elastomer; part ... See more keywords
Origami Improved Dielectric Elastomer Actuation for Tunable Lens
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2022.3168942
Abstract: Dielectric elastomer actuators (DEAs) have been applied to the tunable solid lens with the unique characteristics of fast response, low consumption, lightweight, and silent operation. However, the performance of the DEA-based contraction tunable solid lens… read more here.
Keywords: solid lens; dielectric elastomer; tunable solid; tunable lens ... 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
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
Fast volumetric imaging with line-scan confocal microscopy by electrically tunable lens at resonant frequency.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.450745
Abstract: In microscopic imaging of biological tissues, particularly real-time visualization of neuronal activities, rapid acquisition of volumetric images poses a prominent challenge. Typically, two-dimensional (2D) microscopy can be devised into an imaging system with 3D capability… read more here.
Keywords: electrically tunable; line scan; microscopy; scan confocal ... See more keywords
Electrically tunable lens integrated with optical coherence tomography angiography for cerebral blood flow imaging in deep cortical layers in mice.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.005037
Abstract: We report the use of an electrically tunable lens (ETL) in a 1.3 μm spectral-domain optical coherence tomography (SD-OCT) system to overcome the depth of focus (DOF) limitation in conventional OCT systems for OCT angiography (OCTA)… read more here.
Keywords: electrically tunable; tunable lens; cortical layers; blood flow ... See more keywords
Electrically tunable lens with a non-monotonic wavefront control capability.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.465018
Abstract: We describe an electrically tunable liquid crystal lens that can produce a rich variety of wavefronts, including sombrero-type (non-monotonic) phase modulation, enabling the focusing of light into a ring-shaped intensity distribution. The lens can also… read more here.
Keywords: electrically tunable; lens non; monotonic wavefront; non monotonic ... See more keywords