Results 21 to 30 of about 133,733 (246)

Design of a Hybrid Refractive/Diffractive Lens System for Broadband UV

Sensors, 2022
Traditional broadband UV optical designs often have complex structural problems and cannot meet the current requirements of light and miniaturization.
Yuan Hu, Jiaqi Huo, Binpeng Cheng
doaj   +1 more source

Comparative analysis of the Fresnel lens and the kinoform lens [PDF]

Компьютерная оптика, 2018
Based on a unified approach in the ray approximation, the focusing properties of Fresnel lenses and kinoform lenses are considered and compared. Particular attention is paid to the energy efficiency, chromatic focal shift and resolving power of these ...
Grigoriy Greisukh, Sergei Stepanov, Artyom Ivanovich Antonov   +2 more
doaj   +1 more source

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

Applied Sciences, 2022
The high-precision diffraction grating is an important chromatic dispersion component that has been widely used in many fields, including laser beam combining, chirped pulse compression, spectroscopy, among others.
Ye Wang, Xiuhua Fu, Yongyi Chen, Li Qin, Yongqiang Ning, Lijun Wang   +5 more
doaj   +1 more source

ANALYSIS OF THE DIFFRACTION EFFICIENCY OF ONE-DIMENSIONAL BINARY DIFFRACTION GRATING BY THE PLANE WAVE EXPANSION METHOD (THE TE-POLARIZATION CASE)

Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. The aim of this work is to study the diffraction of an electromagnetic TE-wave by one-dimensional cylindrical diffraction gratings. Material and methods.
A. A. Tsupak
doaj   +1 more source

Verification of Polarization Matching on the Hologram Recording Plane for the Implementation of an Optimized Digital Hologram Printing System

Frontiers in Physics, 2022
Conventional studies on digital hologram printer have mainly been conducted on image generation and reconstruction such as multi-view image generation method, computer-generated hologram (CGH) and a method of displaying a wave-front for a 3D object ...
Leehwan Hwang, Jongho Jeong, Cheolyoung Go, Philippe Gentet, Jungho Kim, Soonchul Kwon, Seunghyun Lee   +6 more
doaj   +1 more source

Augmented Reality Vector Light Field Display with Large Viewing Distance Based on Pixelated Multilevel Blazed Gratings

Photonics, 2021
Glasses-free augmented reality (AR) 3D display has attracted great interest in its ability to merge virtual 3D objects with real scenes naturally, without the aid of any wearable devices.
Jiacheng Shi, Jianyu Hua, Fengbin Zhou, Min Yang, Wen Qiao   +4 more
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Electromagnetically Induced Grating of Surface Polaritons via Coherent Population Oscillation

Photonics, 2022
We propose a scheme to study the electromagnetically induced grating (EIG) of surface polaritons (SPs) in a negative index metamaterial/rare-earth-ion-doped crystal interface waveguide system, based on coherent population oscillation (CPO) modulating by ...
Yu Duan, Shengyan Liu, Chaohua Tan
doaj   +1 more source

Form-faсtor of the holograms of composite images [PDF]

Компьютерная оптика, 2018
This article is a follow-on study of the influence of the form-factor of holograms on their optimal characteristics, such as the optimal exposure, subject to a known visibility distribution, and the maximum achievable values of the average diffraction ...
Sergey Shoydin, Aleksandr Trifanov
doaj   +1 more source

Optically Tunable Diffraction Efficiency in Reflection Grating Written in Photomobile Polymers

Photonics, 2022
In this work, we report the fabrication and optical characterization of a one-dimensional reflection holographic volume phase grating recorded in a recently developed holographic photomobile composite polymer mixture.
Riccardo Castagna, Andrea Di Donato, Oriano Francescangeli, Daniele Eugenio Lucchetta   +3 more
doaj   +1 more source

Study of Optical, Electrophotographic and Holographic Parameters of As-Se Condensates from the Prehistory of the Original Bulk Materials

East European Journal of Physics
The results of a study of the optical, electrophotographic and holographic parameters of As-Se condensates from the prehistory of the original bulk materials are presented.
Sharifa B. Utamuradova, Zakirjan T. Azamatov, A.I. Popov, Mira R. Bekchanova, Murodjon A. Yuldoshev, Abror B. Bakhromov   +5 more
doaj   +1 more source