China 2School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China Correspondence should be addressed to Xuejun Zhou; xuejunzhou@sdjzu.edu.cn Received 7 November 2018; Accepted 30 December 2018; Published 3 March 2019 Academic Editor: Rosario Montuori Copyright © 2019 Rongqian ...
Here we propose a class of angle-selective metasurfaces, over which beams are reflected following different and independent phase gradients in the light of the beam direction. Such powerful feature is achieved by leveraging the local phase modulation and the non-local lattice diffraction via inverse...
Correspondence to Rafael Gonçalves Licursi de Mello. Ethics declarations Competing interests The authors declare no competing interests. Additional information Publisher's note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Supplementary Inf...
A zoomable light beam spreader comprising first and second multiple-lens arrays includes a plurality of plano-convex lenses in correspondence with a plurality of plano-concave lenses having matched, curved optical surfaces. In a zero-power state, the two multiple-lens arrays are very closely spaced...
Correspondence to Da Xing. Additional information Competing interests The authors declare that they have no competing interests. Authors' contributions HW has been involved in the design and conception of the study, supervision of the work, acquisition and analysis of data, and writing the manuscript...
There exists a correspondence between the 3D Radon transform and 3D Fourier transform of an object function f(r) that is known as the Fourier slice theorem.37, 36 It states that the 1D Fourier transform of data along a radial line in the 3D Radon domain of f(r) is equal to the data...
PURPOSE:To reduce the size and price of a titled optical deflector by providing plural incident light parts and plural projection light parts which obtain deflected projection light by making incident light incident by a polygon mirror body in correspondence to those incident light parts. CONSTITUTION...
2 Université de Tunis El Manar, Tunis 1068, Tunisia 3 Innov’Com Laboratory LR11TIC03, SUPCOM, University of Carthage, Ariana 2083, Tunisia * Author to whom correspondence should be addressed. Appl. Sci. 2023, 13(13), 7878; https://doi.org/10.3390/app13137878 Submission...
Since mmWave V2I communication requires dense deployment of BSs and short distances between the BSs and vehicles, the channel is susceptible due to variations of vehicle height and elevation angle extensions [30]. To reduce the possible impact on the channel, uniform planar arrays (UPA) are used...
in addition to the feature included in the first embodiment, second means forming part of the rotating element in order to bring about variation of the diameter exhibited by the tubular luminous beam in a manner such that it surrounds the power beam in correspondence with the chosen cross-sectio...