Results 11 to 20 of about 22,341 (248)
Applied Sciences, 2019 Effective perspective image segmentation and mosaicking (EPISM) method is an effective holographic stereogram printing method, but a mosaic misplacement of reconstruction image occurred when focusing away from the reconstruction image plane.
Fan Fan +6 more
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 +3 more
openaire +1 more source
Volume diffraction gratings for optical telecommunications applications: design study for a spectral equalizer [PDF]
, 2004 The main characteristics required for a diffraction grating used for demultiplexing functions in spectral equalizing systems are investigated, both theoretically and experimentally.
Chevallier, Raymond +5 more
core +1 more source
Projection-type see-through holographic three-dimensional display
Nature Communications, 2016 The design of holographic displays usually involves a trade-off between size and viewing angle. Here, the authors combine holographic projection with a digitally designed holographic optical element so that display size and the visual angle can be ...
Koki Wakunami +8 more
doaj +1 more source
Photolithographic fabrication method of computer-generated holographic interferograms [PDF]
, 1989 We consider the fabrication of high-quality interferogram-type diffractive optical elements with conventional photolithographic techniques and compare the results with those achievable with electron-beam lithography. The fringes associated with the phase
Byckling, Eero +6 more
core +1 more source
Dual-View Integral Imaging 3D Display Based on Multiplexed Lens-Array Holographic Optical Element
Applied 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 +1 more source
Multilayer Smart Holographic Label with Integrated RFID for Product Security and Monitoring
Micromachines, 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
One-step volumetric additive manufacturing of complex polymer structures. [PDF]
, 2017 Two limitations of additive manufacturing methods that arise from layer-based fabrication are slow speed and geometric constraints (which include poor surface quality). Both limitations are overcome in the work reported here, introducing a new volumetric
Browar, Allison EM +7 more
core +2 more sources
Selective Couplers Based on Multiplexed Volume Holographic Gratings for Waveguide Displays
Photonics, 2021 Diffraction waveguides are widely used in augmented reality devices as information display systems for the introduction of data into the human visual field in order to supplement information about the world around us. This paper formulates the principles
Maria Shishova +5 more
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Volume Holographic Hyperspectral Imaging [PDF]
, 2004 A volume hologram has two degenerate Bragg-phase-matching dimensions and provides the capability of volume holographic imaging. We demonstrate two volume holographic imaging architectures and investigate their imaging resolution, aberration, and ...
Barbastathis, George +2 more
core +1 more source