Journal ArticleDOI
High-speed driving of liquid crystal lens with weakly conductive thin films and voltage booster.
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TLDR
It is shown that low-voltage LC lenses, with the help of an overdrive pulse, can show response times of several 10 ms, which are comparable with voice coil motors currently used for focus-tuning of mobile cameras.Abstract:
Liquid crystal (LC) lenses with weakly conductive thin films are known to have driving voltages of several volts, which are much smaller than those of devices without them; however, their response characteristics have not been investigated in much detail. Here, we show that low-voltage LC lenses, with the help of an overdrive pulse, can show response times of several 10 ms, which are comparable with voice coil motors currently used for focus-tuning of mobile cameras. We provide data on the lens power as well as real images captured using a lens module and a camera; we also present a compact circuit design that can boost a 3.5 V(rms) square pulse from a mobile battery to 15 V(rms). The results of this study should accelerate the use of LC lenses in mobile applications.read more
Citations
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Journal ArticleDOI
Dual layer electrode liquid crystal lens for 2D/3D tunable endoscopy imaging system.
TL;DR: This paper demonstrates a multi-functional liquid-crystal lens (MFLC-lens) based on dual-layer electrode design that is switchable between 2D and 3D modes, but also is able to adjust focus in both modes.
Journal ArticleDOI
Large aperture liquid crystal lens with an imbedded floating ring electrode
TL;DR: The proposed hole-patterned large aperture (LA) liquid crystal (LC) lens with a diameter of 6 mm has low operation voltage, large lens power, and introduces a low wavefront error of approximately 0.07 λ.
Journal ArticleDOI
Fabrication of an electrowetting liquid microlens array for a focus tunable integral imaging system
TL;DR: In this article, the fabrication of the electrowetting liquid lens array with an adjustable focal length is presented, with the liquid microlens array having an enhanced expressible depth range.
Journal ArticleDOI
Application of ultra-thin indium–tin–oxide film in liquid crystal lens
Che Ju Hsu,Kaushlendra Agrahari,Pravinraj Selvaraj,Wei Fan Chiang,Wei Fan Chiang,Chia Yi Huang,Rajiv Manohar,Chi Yen Huang +7 more
TL;DR: In this article, an ultra-thin ITO (UTITO) film was fabricated at the interface between the dielectric and liquid crystal (LC) layers in large-aperture hole-patterned LC lens.
Journal ArticleDOI
Influence of floating-ring-electrode on large-aperture liquid crystal lens
TL;DR: Large-aperture liquid crystal (LALC) lens with hole patterned electrodes possesses small lens power and high addressing voltage because of the thick dielectric layer inserted between the hole-patte...
References
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Journal ArticleDOI
Liquid-crystal lens with a focal length that is variable in a wide range
Mao Ye,Bin Wang,Susumu Sato +2 more
TL;DR: A liquid-crystal (LC) lens driven by two voltages has a focal length that is electrically tunable and the use of the LC lens in image formation is demonstrated.
Journal ArticleDOI
Optical lens with electrically variable focus using an optically hidden dielectric structure
Karen Asatryan,Vladimir V. Presnyakov,Amir Tork,Armen Zohrabyan,Aram Bagramyan,Tigran Galstian +5 more
TL;DR: Electrically variable gradient index liquid crystal lens is developed that uses flat uniform liquid crystal layer and electrodes that decouples the electrical and optical functions of that structure, increases significantly the performance of the lens and enables new functionalities.
Journal ArticleDOI
A fast response and large electrically tunable-focusing imaging system based on switching of two modes of a liquid crystal lens
Hung Chun Lin,Yi-Hsin Lin +1 more
TL;DR: In this article, the authors demonstrated a fast response and large tunable focusing imaging system consisting of a lens module and a liquid crystal (LC) lens based on the switching of two modes of a LC lens: the negative LC lens and positive LC lens.
Journal ArticleDOI
Fast-Response Liquid Crystal Microlens
TL;DR: Two types of fast-response microlenses based on LC/polymer composites based on polymer dispersed/stabilized nematic LC and polymer-stabilization blue phase LC are reviewed.
Journal ArticleDOI
Near-diffraction-limited and low-haze electro-optical tunable liquid crystal lens with floating electrodes
TL;DR: A near-diffraction-limited, low-haze and tunable liquid crystal (LC) lens is presented that uses 'floating' electrodes to provide a smooth, controllable applied potential profile across the aperture to manage the phase profile.