Results 1 to 10 of about 5,837,988 (197)

Photopolymer-based volume holographic optical elements: design and possible applications [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
In this paper, Volume Holographic Optical Elements (V-HOEs), such as holographic gratings and spherical lenses, are designed and fabricated by using a prototype of photopolymer.
Bianco G.   +5 more
doaj   +7 more sources

Wavefront-aberration-tolerant diffractive deep neural networks using volume holographic optical elements. [PDF]

open access: yesSci Rep
As the demand for computational performance in artificial intelligence (AI) continues to increase, diffractive deep neural networks (D2NNs), which can perform AI computing at the speed of light by repeated optical modulation with diffractive optical ...
Hoshi I, Wakunami K, Ichihashi Y, Oi R.
europepmc   +2 more sources

Holographic Optical Elements for Augmented Reality: Principles, Present Status, and Future Perspectives

open access: yesAdvanced Photonics Research, 2021
Holographic optical elements (HOEs) exhibit several unique properties in arbitrary wavefront recording and extraction. Versatile recording mechanisms and material availabilities further expand their design flexibilities.
Jianghao Xiong   +3 more
doaj   +2 more sources

Metasurface-Based Multidimensional Light-Field Manipulation: From Technologies to Applications. [PDF]

open access: yesAdv Sci (Weinh)
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Yin H   +6 more
europepmc   +2 more sources

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

Holography with high-power CW coherent terahertz source: optical components, imaging, and applications

open access: yesLight: Advanced Manufacturing, 2022
This paper presents the results of 15 years of studies in the field of terahertz holography at the Novosibirsk free electron laser. They cover two areas: research on obtaining holographic images in the terahertz range and the use of diffractive optical ...
Yulia Choporova   +2 more
doaj   +1 more source

Lightguide type Maxwellian near-eye display with enlarged horizontal field of view by optical reconfiguration of input image

open access: yesJournal of Information Display, 2022
We present a novel design of the lightguide type optical see-through Maxwellian near-eye display. The proposed display reconfigures vertically long input images to horizontally long output images for wide horizontal viewing-angle.
Woongseob Han   +3 more
doaj   +1 more source

Image Quality for Near-Eye Display Based on Holographic Waveguides

open access: yesApplied Sciences, 2022
The paper analyzes the image quality in augmented reality display based on holographic waveguides. Brightness, brightness non-uniformity, image noise, etc., depend on the parameters of the waveguide substrate, the configuration, and the relief shape of ...
Artem Solomashenko   +4 more
doaj   +1 more source

Development and Testing of a Dual-Wavelength Sensitive Photopolymer Layer for Applications in Stacking of HOE Lenses

open access: yesApplied Sciences, 2021
Diffractive optical elements (DOEs) have been in development for many years and are an exciting technology with the capability to re-direct light, using diffraction rather than refraction.
Sanjay Keshri   +5 more
doaj   +1 more source

Multilayer Smart Holographic Label with Integrated RFID for Product Security and Monitoring

open access: yesMicromachines, 2023
Counterfeiting presents a major economic problem and an important risk for the public health and safety of individuals and countries. To make the counterfeiting process more difficult, and to ensure efficient authentication, a solution would be to attach
Cătălin Pârvulescu   +4 more
doaj   +1 more source

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