Results 21 to 30 of about 22,341 (248)

A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display

open access: yesApplied Sciences, 2019
A fast computer-generated holographic method with multiple projection images for a near-eye VR (Virtual Reality) and AR (Augmented Reality) 3D display is proposed.
Xin Yang, HongBo Zhang, Qiong-Hua Wang
doaj   +1 more source

Efficient Hogel-Based Hologram Synthesis Method for Holographic Stereogram Printing

open access: yesApplied Sciences, 2020
With the development of the holographic printer, printing synthetic hologram requires smaller holographic element (hogel) size to improve spatial resolution of the reconstruction.
Erkhembaatar Dashdavaa   +7 more
doaj   +1 more source

Phase Compensation of the Non-Uniformity of the Liquid Crystal on Silicon Spatial Light Modulator at Pixel Level

open access: yesSensors, 2021
Phase compensation is a critical step for the optical measuring system using spatial light modulator (SLM). The wavefront distortion from SLM is mainly caused by the phase modulation non-linearity and non-uniformity of SLM’s physical structure and ...
Zhen Zeng   +3 more
doaj   +1 more source

Application of a liquid crystal spatial light modulator to laser marking [PDF]

open access: yes, 2011
Laser marking is demonstrated using a nanosecond (ns) pulse duration laser in combination with a liquid crystal spatial light modulator to generate two-dimensional patterns directly onto thin films and bulk metal surfaces.
Beck, Rainer J   +3 more
core   +1 more source

Modelling and Design of Holographic Optical Elements for Beam-Coupling Applications for a Range of Incident Beam Angles

open access: yesPhotonics, 2022
Theoretical modelling has been used to calculate the holographic recording beam angles required in air (at any recording wavelength) to produce a Volume Holographic Optical Element (VHOE) for any defined input and output beam angles. The approach is used
Dipanjan Chakraborty   +6 more
doaj   +1 more source

An Augmented Reality Head-Up Display System with a Wide-View Eyebox

open access: yesInternational Journal of Optics, 2020
This study proposes to apply the combination of two 90-degree prisms and a holographic optical element to an image-dividing element, divide an image into three through the virtual image projection system, and accurately project the images to 160 cm ...
Pei-Jung Wu   +4 more
doaj   +1 more source

Verification of an Accommodative Response for Depth Measurement of Floating Hologram Using a Holographic Optical Element

open access: yesApplied Sciences, 2020
Floating holograms using holographic optical element screens differ from existing systems because they can float 2D images in the air and provide a sense of depth.
Leehwan Hwang   +5 more
doaj   +1 more source

Optical schemes of spectrographs with a diffractive optical element in a converging beam [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
Optical schemes of spectrographs based on transmission concave holographic gratings working in converging beams are considered. General description of the design techniques are provided. Each of them is supported by a certain example with calculation and
Muslimov E. R., Pavlycheva N. K.
doaj   +1 more source

Adiabatic evolution on a spatial-photonic Ising machine [PDF]

open access: yes, 2020
Combinatorial optimization problems are crucial for widespread applications but remain difficult to solve on a large scale with conventional hardware.
Conti, C., Marcucci, G., Pierangeli, D.
core   +2 more sources

Geometric-phase-based shearing interferometry for broadband vortex state decoding

open access: yesScientific Reports, 2022
Given that spin and orbital angular momenta of photons have been widely investigated in optical communication and information processing systems, efficient decoding of optical vortex states using a single element is highly anticipated.
Ziyao Lyu, Changshun Wang
doaj   +1 more source

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