Results 21 to 30 of about 122,050 (289)
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
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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
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
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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
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 +3 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
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 +5 more
openaire +1 more source
A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display
Applied 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
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Efficient Hogel-Based Hologram Synthesis Method for Holographic Stereogram Printing
Applied 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
Sensors, 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