Results 21 to 30 of about 2,725 (213)

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

International 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, Chih-Hao Chuang, Chien-Yu Chen, Jeng-Han Wu, Bor-Shyh Lin   +4 more
doaj   +1 more source

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

Applied 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, Sungjae Ha, Philippe Gentet, Jaehyun Lee, Soonchul Kwon, Seunghyun Lee   +5 more
doaj   +1 more source

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

Scientific 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

Crosstalk Reduction in Voxels for a See-Through Holographic Waveguide by Using Integral Imaging with Compensated Elemental Images

Photonics, 2021
The representation of three-dimensional volumetric pixels, voxels, is an important issue for the near-to-eye displays (NEDs) to solve the vergence-accommodation conflict problem. Although the holographic waveguides using holographic optical element (HOE)
Jiwoon Yeom, Yeseul Son, Kwangsoon Choi
doaj   +1 more source

Multifacet holographic optical elements [PDF]

ICALEO '83: Proceedings of the Information Processing and Holography Symposium, 1983
Holographic optical elements are an attractive alternative to conventional optical elements in systems using light with a narrow spectral bandwidth. The attributes of holographic optical elements include the capability of producing low f/number diffraction limited optics, and the ability to generate arbitrary wavefronts.
S. K. Case, H. O. Bartelt, P. R. Haugen, L. R. Konicek   +3 more
openaire   +1 more source

Orbital Angular Momentum generation in infrared with Holographic Optical Elements [PDF]

EPJ Web of Conferences
Optical vortices are of interest in the infrared range for applications in the fields of optical fiber communications and femtosecond laser pulses. Among the current techniques used to generate optical vortices, the use of a Spatial Light Modulator (SLM)
Marín-Sáez Julia, Sevilla Marina, Paredes Álvaro, Collados Victoria, Atencia Jesús   +4 more
doaj   +1 more source

Diffractive Optical Elements with a Large Angle of Operation Recorded in Acrylamide Based Photopolymer on Flexible Substrates

International Journal of Polymer Science, 2014
A holographic device characterised by a large angular range of operation is under development. The aim of this study is to increase the angular working range of the diffractive lens by stacking three layers of high efficiency optical elements on top of ...
Hoda Akbari, Izabela Naydenova, Lina Persechini, Sean M. Garner, Pat Cimo, Suzanne Martin   +5 more
doaj   +1 more source

Implementation and characterization of the optical-see-through Maxwellian near-eye display prototype using three-dimensional printing

Journal of Information Display, 2020
By presenting always-in-focus virtual images, Maxwellian near-eye displays can remove the vergence accommodation conflict, which causes eye fatigue or dizziness.
Myeong-Ho Choi, Seong-Bok Kim, Jae-Hyeung Park   +2 more
doaj   +1 more source

Design and fabrication of freeform holographic optical elements [PDF]

ACM Transactions on Graphics, 2020
Holographic optical elements (HOEs) have a wide range of applications, including their emerging use in virtual and augmented reality displays, but their design and fabrication have remained largely limited to configurations using simple wavefronts. In this paper, we present a pipeline for the design, optimization, and fabrication of complex, customized
Changwon Jang, Olivier Mercier, Kiseung Bang, Gang Li, Yang Zhao 0030, Douglas Lanman   +5 more
openaire   +1 more source

Calculation of higher-order axial spherical aberrations of a high-aperture focusing holographic optical element with the corrected third-order spherical aberration. Part 2 [PDF]

Компьютерная оптика, 2018
The paper presents and discusses the results of calculations of the radii of transverse fifth-, seventh- and ninth-order spherical aberrations in a multi-order on-axis HOE (holographic optical element), recorded using two divergent spherical waves.
Yuri Batomunkuev, Aleksandra Dianova , Tatyana Maganakova   +2 more
doaj   +1 more source