Results 1 to 10 of about 659,213 (221)

Optical See-through 2D/3D Compatible Display Using Variable-Focus Lens and Multiplexed Holographic Optical Elements

open access: yesPhotonics, 2021
An optical see-through two-dimensional (2D)/three-dimensional (3D) compatible display using variable-focus lens and multiplexed holographic optical elements (MHOE) is presented. It mainly consists of a MHOE, a variable-focus lens and a projection display
Qinglin Ji   +5 more
doaj   +3 more sources

Contact lens embedded holographic pointer

open access: yesScientific Reports, 2023
In this paper we present an infrared laser pointer, consisting of a vertical-cavity surface-emitting laser (VCSEL) and a diffractive optical element (DOE), encapsulated into a scleral contact lens (SCL).
François-Maël Robert   +6 more
doaj   +5 more sources

Holographic Zoom System With Large Focal Depth Based on Adjustable Lens

open access: yesIEEE Access, 2020
In this paper, we propose a holographic zoom system based on two adjustable lenses. Different from the traditional holographic system, a digital conical lens and a liquid lens are used as the zoomable lenses.
Di Wang   +3 more
doaj   +3 more sources

Dual-View Integral Imaging 3D Display Based on Multiplexed Lens-Array Holographic Optical Element

open access: yesApplied Sciences, 2019
We propose a dual-view integral imaging 3D display based on a multiplexed lens-array holographic optical element (MHOE). A MHOE is a volume holographic optical element obtained by multiplexing technology, which can be used for dual-view integral imaging ...
Hanle Zhang   +4 more
doaj   +3 more sources

A 0.18 cubic centimeter 3D meta-holographic zoom micro-projector [PDF]

open access: yesNature Communications
Meta-holography has become a frontier hot spot of photonics, thanks to the rapid advancement of nanofabrication. Tunable meta-holography significantly enhances information capacity and meets the growing demands of adaptive imaging, offering tremendous ...
Di Wang   +15 more
doaj   +2 more sources

Metasurface-Based Holographic Display With All-Dielectric Meta-Axilens

open access: yesIEEE Photonics Journal, 2021
In a classical metasurface-based holographic display system, a clear holographic reconstruction image can be obtained only in the back-focal-plane of the lens. However, when the receiving plane deviates from the focal plane, the reconstructed holographic
Chuan Shen   +4 more
doaj   +1 more source

Holographic Optical Lenses Recorded on a Glassy Matrix-Based Photopolymer for Solar Concentrators

open access: yesPhotonics, 2021
Global warming is a very topical issue, therefore the search for new renewable energy sources is considered of fundamental importance. Among these, solar energy offers great possibilities considering that the amount of sunlight hitting the Earth ‘s ...
Maria Antonietta Ferrara   +2 more
doaj   +1 more source

Study on the adaptability of augmented reality smartglasses for astigmatism based on holographic waveguide grating

open access: yesVirtual Reality & Intelligent Hardware, 2020
Background: Augmented reality (AR) smartglasses are considered as the next generation of smart devices to replace mobile phones, and are widely concerned. But at present, AR smartglasses are usually designed according to the human normal eyes.
Shenze Wang   +5 more
doaj   +1 more source

Resolution and Contrast Enhancement for Lensless Digital Holographic Microscopy and Its Application in Biomedicine

open access: yesPhotonics, 2022
An important imaging technique in biomedicine, the conventional optical microscopy relies on relatively complicated and bulky lens and alignment mechanics.
Duofang Chen   +4 more
doaj   +1 more source

Hybrid refractive holographic single vision spectacle lenses

open access: yesJournal of the European Optical Society-Rapid Publications, 2019
In this contribution, we investigate hybrid single vision spectacle lenses (SVSLs) consisting of holographic optical elements (HOEs) embedded into a refractive lens.
Jannik M. Trapp   +4 more
doaj   +1 more source

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