Results 101 to 110 of about 22,341 (248)
Analysis and preliminary design of optical sensors for propulsion control [PDF]
A fiber-optic sensor concept screening study was performed. Twenty sensor subsystems were identified and evaluated. Two concepts selected for further study were the Fabry-Perot fiber-optic temperature sensor and the pulse-width-modulated phosphorescent ...
James, K. A. +2 more
core +1 more source
Power distribution and Q-factor analysis of diffuse cellular indoor visible light communication systems [PDF]
, 2011 Comparing with the existing incandescent, light-emitting diodes (LEDs) offer higher power efficiency, higher brightness, longer lifetime, and have a fast dynamic response in the order of a few megahertz.
Ghassemlooy, Zabih +4 more
core
Gaze‐Engineered 3D Augmented Reality
Advanced Intelligent Systems, EarlyView.Augmented Reality (AR) systems serve as a critical interface bridging users with the metaverse. This study explores the application of human factors engineering in metaverse development, specifically investigating the integration of eye‐tracking technology to enhance AR display performance.
Naiqin Zhao +3 more
wiley +1 more source
Memory‐Reduced Convolutional Neural Network for Fast Phase Hologram Generation
Advanced Intelligent Systems, EarlyView.This article reports a lightweight convolutional neural network framework using INT8 quantization to efficiently generate 3D computer‐generated holograms from a single 2D image. The quantized model reduces memory usage and computational cost, accelerates inference speed, and maintains high output quality, enabling real‐time holographic display on low ...
Chenliang Chang +6 more
wiley +1 more source
Curved holographic optical elements and applications for curved see-through displays
Journal of Information Display, 2019 Holographic optical elements (HOEs) have been used as important tools for implementing augmented reality (AR) and see-through displays because they are transparent and thin.
Kiseung Bang +2 more
doaj +1 more source
Holographic optical system to copy holographic optical elements
, 1991 A holographic system formed by two holographic lenses that, when working with white light, allow selection of a particular wavelength is presented. If adequate spatial and temporal coherence conditions are obtained, it is possible to copy holographic optical elements (HOEs) with partially coherent light by using optical systems formed by holographic ...
Pascual Villalobos, Inmaculada +2 more
openaire +1 more source
HOLOGRAPHIC OPTICAL ELEMENTS FOR BEAUTIFICATION
International Journal of Research in Engineering and Technology, 2013 In this research, holographic optical element appli ed for beautification recorded in holographic surfa ce relief photoresist. Various symmetric periodic structure with high diff raction efficiency in photosensitive material depen ds on various recording geometry parameters are explained.
openaire +1 more source
Advanced Intelligent Systems, EarlyView.A 3D holotomography system coupled with a deep learning model distinguishes how cells die—apoptosis, necroptosis or necrosis—without any fluorescent labels. Training on refractive index maps of HeLa cells yields 97% accuracy and flags necroptosis hours before chemical dyes.
Minwook Kim +8 more
wiley +1 more source
Holographic optical elements: Fabrication and testing [PDF]
The basic properties and use of holographic optical elements were investigated to design and construct wide-angle, Fourier-transform holographic optical systems for use in a Bragg-effect optical memory. The performance characteristics are described along
Ralston, L. M., Shareck, M., Zech, R. G.
core +1 more source
EAGLE ISS - A modular twin-channel integral-field near-IR spectrograph
, 2010 The ISS (Integral-field Spectrograph System) has been designed as part of the EAGLE Phase A Instrument Study for the E-ELT. It consists of two input channels of 1.65x1.65 arcsec field-of-view, each reconfigured spatially by an image-slicing integral ...
Evans, C. J. +5 more
core +1 more source