Results 31 to 40 of about 4,729 (265)
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 +5 more
doaj +1 more source
Optical schemes of spectrographs with a diffractive optical element in a converging beam [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 Optical schemes of spectrographs based on transmission concave holographic gratings working in converging beams are considered. General description of the design techniques are provided. Each of them is supported by a certain example with calculation and
Muslimov E. R., Pavlycheva N. K.
doaj +1 more source
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 +4 more
doaj +1 more source
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
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 +5 more
doaj +1 more source
Monomer diffusion rates in photopolymer material. Part I. Low spatial frequency holographic gratings
, 2011 For photopolymers, knowing the rate of diffusion of the active monomer is important when modeling the material evolution during recording in order to understand and optimize their performance.
Close, Ciara E. +8 more
core +1 more source
3D Printing Innovations in Polymeric Porous and Patterned Architecture
Advanced Functional Materials, EarlyView.Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil +13 more
wiley +1 more source
Advanced Functional Materials, EarlyView.The polymer wall stabilized dye‐doped liquid crystals (PWLCs) enhance the sensitivity of photoinduced molecular reorientation in dye‐doped LC systems. The PWLC with an invisible polymer wall successfully reduces the threshold intensity and functions as an optical limiter under the incidence of low intensity light laser source.
Junki Yokota +6 more
wiley +1 more source
Advanced Materials, EarlyView.We report a multifunctional tapered optical fiber integrating a conformal micro‐resistance temperature detector (µRTD) for local, real‐time thermometry during optical stimulation. The platform combines light‐delivery and temperature sensing within a minimally invasive footprint, enabling detection of sub‐degree cortical heating under representative ...
Antonio Balena +6 more
wiley +1 more source
Identification of Behavioral Features of Bridge Structure Based on Static Image Sequences
Advances in Civil Engineering, 2020 This paper aims to further enhance the accuracy and efficiency of large bridge structural health monitoring (SHM) through noncontact remote sensing (NRS). For these purposes, the authors put forward an intelligent NRS method that collects the holographic
Guojun Deng +3 more
doaj +1 more source