Results 81 to 90 of about 32,036 (281)

Large-scale spectral bandwidth compression by complex electro-optic temporal phase modulation

, 2018
Spectral-temporal shaping of quantum light has important applications in quantum communications and photonic quantum information processing. Electro-optic temporal lenses have recently been recognized as a tool for noise-free, efficient spectral ...
Karpinski, Michal, Sosnicki, Filip
core   +1 more source

Size‐ and Depth‐Extended Aerial 3D Display Using Fresnel‐Lens‐Enhanced AIRR

Journal of the Society for Information Display, EarlyView.
A size‐ and depth‐extended three‐dimensional (3D) aerial display is realized by combining a light‐field display with a magnifying lens and a Fresnel‐lens‐enhanced aerial imaging by retro‐reflection (LeAIRR) system. The magnifying lens enlarges the virtual light‐field display plane without increasing the physical panel size, extending the aerial image ...
Akito Fukuda, Kazuaki Takiyama, Hiroki Takatsuka, Toru Iwane, Shiro Suyama, Hirotsugu Yamamoto   +5 more
wiley   +1 more source

Optimized Fresnel lens design for enhanced Passive infrared sensors in advanced security monitoring systems

Results in Optics
Passive Infrared (PIR) motion sensors are integral to modern residential and commercial security systems, valued for their reliability, cost-effectiveness, and ability to detect motion through infrared radiation.
Vo Quang Sang, Pham Van Quan, Bui Dinh Bao   +2 more
doaj   +1 more source

Numerical investigation of lensless zoomable holographic multiple projections to tilted planes

, 2014
This paper numerically investigates the feasibility of lensless zoomable holographic multiple projections to tilted planes. We have already developed lensless zoomable holographic single projection using scaled diffraction, which calculates diffraction ...
Endo, Yutaka, Hasegawa, Satoki, Hirayam, Ryuji, Hiyama, Daisuke, Ito, Tomoyoshi, Kakue, Takashi, Makowski, Michal, Nagahama, Yuki, Okada, Naohisa, Shimobaba, Tomoyoshi   +9 more
core   +1 more source

Thin Maxwellian Virtual Reality Near‐Eye Display Using Holographic Optical Element and Mini‐Fresnel Lens Array

Journal of the Society for Information Display, EarlyView.
A thin Maxwellian‐view VR near‐eye display based on a holographic optical element (HOE) is presented. Integrating the HOE with the display panel eliminates the structural gap, achieving an 8‐mm internal spacing. Accommodation‐independent image sharpness is experimentally verified over a 0‐ to 3.3‐D range, mitigating the vergence–accommodation conflict.
Minseong Kim, Myeong‐Ho Choi, Jae‐Hyeung Park   +2 more
wiley   +1 more source

Automated Fresnel lens tester system [PDF]

, 1981
An automated data collection system controlled by a desktop computer has been developed for testing Fresnel concentrators (lenses) intended for solar energy applications. The system maps the two-dimensional irradiance pattern (image) formed in a plane parallel to the lens, whereas the lens and detector assembly track the sun.
openaire   +2 more sources

Optical Skyrmions with Tunable or Reconfigurable Topology Using Spin‐Decoupled Metaoptics

Laser &Photonics Reviews, EarlyView.
The work introduces advanced optical elements capable of generating and dynamically reconfiguring complex light patterns known as optical skyrmions. By precisely shaping light polarization at the nanoscale, a single engineered metasurface can generate and manipulate robust and tunable polarization textures in an efficient and scalable way.
Andrea Vogliardi, Daniele Bonaldo, Simone Dal Zilio, Vittorio Apolloni, Filippo Romanato, Gianluca Ruffato   +5 more
wiley   +1 more source

Electrically Tunable Binary-Phase Fresnel Lens Based on Polymer Dispersed Liquid Crystal

Medžiagotyra, 2017
This is a proposal for a Fresnel lens with an electrically tunable binary-phase made of polymer dispersed liquid crystal (PDLC), which has relatively fast response time and low applied voltage.
Hui LI, Fan PAN, Yuntao WU, Yanduo ZHANG, Xiaolin XIE   +4 more
doaj   +1 more source

Scattering of gravitational radiation: second order moments of the wave amplitude [PDF]

, 2004
Gravitational radiation that propagates through an inhomogeneous mass distribution is subject to random gravitational lensing, or scattering, causing variations in the wave amplitude and temporal smearing of the signal.
Armstrong, Bliokh, Bontz, Deguchi, Deguchi, Detweiler, Dickey, Goodman, Gupta, J.-P. Macquart, Katz, Lee, Little, Mandzhos, Narayan, Ohanian, Ohanian, Peterson, Rickett, Ruffa, Salpeter, Sazhin, Schneider, Sofue, Stanimirovic, Takahashi   +25 more
core   +3 more sources

Novel Sulfur‐Rich Polymers from Inverse Vulcanization as Functional Building Blocks for Photonics

Macromolecular Rapid Communications, EarlyView.
Isopropenyl aromatic comonomers, in particular novel 2,7‐diisopropenylfluorene and 2,8‐diisopropenyldibenzothiophene, synthesized by sustainable, facile, single‐step SMCCR from available brominated substrates are exploited in the Inverse Vulcanization process to obtain functional Sulfur‐rich macromolecular materials.
Raimondo Insogna, Fabiano Martorelli, Daniela Di Fonzo, Martina Martusciello, Roberto Utzeri, Angelo Angelini, Davide Comoretto, Paola Stagnaro   +7 more
wiley   +1 more source