Results 21 to 30 of about 5,247 (233)

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

Virtual 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, Kaikai Du, Ningfang Song, Dongfeng Zhao, Di Feng, Zhengqian Tu   +5 more
doaj   +1 more source

A non-coherent holographic correlator based on a digital micromirror device [PDF]

Компьютерная оптика, 2018
The possibility of application of a digital micromirror device (DMD) as a spatial light modulator for outputting holographic filters in an optical correlator illuminated by quasi-monochromatic spatially incoherent radiation was discussed.
Vladislav Rodin
doaj   +1 more source

Analysis and interpretation of the Seidel aberration coefficients in digital holography [PDF]

, 2011
Peer ...
Watson, John, John Watson, Rodenburg, John, Claus, Daniel, Daniel Claus, John Rodenburg   +5 more
core   +1 more source

Volume Holographic Optical Elements as Solar Concentrators: An Overview

Applied Sciences, 2019
Generally, to reduce the area of a photovoltaic cell, which is typically very expensive, solar concentrators based on a set of mirrors or mechanical structures are used.
Maria Antonietta Ferrara, Valerio Striano, Giuseppe Coppola   +2 more
doaj   +1 more source

Simulation of superresolution holography for optical tweezers [PDF]

, 2008
Optical tweezers manipulate microscopic particles using foci of light beams. Their performance is therefore limited by diffraction. Using computer simulations of a model system, we investigate the application of superresolution holography for two ...
Thomson, L.C., Boissel, Yannick, Yao, E., Thomson, Laura C., Yannick Boissel, Eric Yao, Johannes Courtial, Yao, Eric, Laura C Thomson, Courtial, J., Whyte, G., Graeme Whyte, Whyte, Graeme, Courtial, Johannes, Boissel, Y.   +14 more
core   +1 more source

A Virtual Optical Holographic Encryption System Using Expanded Diffie-Hellman Algorithm

IEEE Access, 2021
This paper presents a new method for encrypting information over a Virtual Optical Holographic Encryption (VOHE) system which employs a virtual optical system based on digital holography and Fourier lens.
Yang Peng, Tomoyuki Nagase, Toshiki Kanamoto, Tsutomu Zeniya, Shan You   +4 more
doaj   +1 more source

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

, 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.
Rainer J. Beck, Jonathan D. Shephard, Parry, Jonathan P., Hand, Duncan P.; id_orcid, Beck, Rainer J, Jonathan P. Parry, Duncan P. Hand, Shephard, Jonathan D.; id_orcid   +7 more
core   +1 more source

Holographic progressive lenses

, 2022
Paper 107450G, 7 S.Progressive addition lenses (PALs) are realized as optical freeform surfaces by complex manufacturing and inspection processes. In turn, holographic optical elements (HOEs) enable fast and easy fabrication in other applications.
Pertsch, T., Petschulat, J., Decker, M., Jabbour, T.G., Trapp, J.   +4 more
core   +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

Chern-Simons invariants from ensemble averages

Journal of High Energy Physics, 2021
We discuss ensemble averages of two-dimensional conformal field theories associated with an arbitrary indefinite lattice with integral quadratic form Q.
Meer Ashwinkumar, Matthew Dodelson, Abhiram Kidambi, Jacob M. Leedom, Masahito Yamazaki   +4 more
doaj   +1 more source