Results 31 to 40 of about 315,377 (295)

Multi-wavelength optical pickup with diffractive optical elements

, 2022
S.2437-2453A novel, to our knowledge, multi-wavelength diffractive optical pickup is presented. The pickup enables multi-focus imaging and increases the data transfer rate considerably. Parallel reading of two or more memory layers is possible.
Pawlowski, E., Furst, W., Falkenstorfer, O., Steiner, R., Steingrüber, R., Dobschal, H.-J.   +5 more
core   +1 more source

Near-infrared Spectrum Characteristics of Micro-Nano Material Based Diffraction Optical Devices

Medžiagotyra
Diffractive optics devices are optical devices in which the amplitude or phase of the incident light is spatially modulated periodically by a micro-nanomaterial based structure.
Zhao JIN, Qiyao XIAO, Yue ZHANG, Cheng SUN, Yongbo DENG, Chengmiao WANG, Qiang FU, Yingchao LI, Huilin JIANG   +8 more
doaj   +1 more source

Design, Analysis, and Manufacturing of Diffractive Achromatic Optical Systems

Micromachines
The increasing resolution requirements of imaging optical systems must be satisfied by expanding the aperture of the optical system according to Rayleigh’s criterion, and larger apertures of conventional refractive/reflective optics place a greater ...
Yidi Zheng, Junfeng Du, Boping Lei, Jiang Bian, Lihua Wang, Bin Fan   +5 more
doaj   +1 more source

Hexagonal diffractive optical elements

Optics Express, 2023
Diffractive optical elements (DOEs) have widespread applications in optics, ranging from point spread function engineering to holographic display. Conventionally, DOE design relies on Cartesian simulation grids, resulting in square features in the final design.
Yidan Zheng, Qiang Fu, Hadi Amata, Praneeth Chakravarthula, Felix Heide, Wolfgang Heidrich   +5 more
openaire   +3 more sources

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

A new, sensitive diffractive optic angle meter

, 2002
A sensitive diffractive optic angle meter scheme, based on coherent imaging of two laterally shifted phase gratings onto a third, their periods matched, is presented and experimentally investigated.
Kazemi Moud, Kamyar, Hård, Sverker,, Kamyar Kazemi Moud, Magnusson, Anders, Kazemi Moud, Kamyar,, Anders Magnusson, Magnusson, Anders,, H\ue5rd, Sverker, Sverker Hård   +8 more
core   +1 more source

Considering Grayscale Process and Material Properties for Robust Multilevel Diffractive Flat Optics

Photonics
Arbitrarily designed flat optics directly manipulate the light wavefront to reproduce complex optical functions, enabling more compact optical assemblies and microsystem integration.
Diogo E. Aguiam, Ana Dias, Manuel J. L. F. Rodrigues, Aamod Shanker, Filipe Camarneiro, Joana D. Santos, Pablo Valentim, Joao Cunha, Patrícia C. Sousa   +8 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

Fabrication of Diffractive Optical Elements to Generate Square Focal Spots via Direct Laser Lithography and Machine Learning

Photonics
Recently, diffractive optics systems have garnered increasing attention due to their myriad benefits in various applications, such as creating vortex beams, Bessel beams, or optical traps, while refractive optics systems still exhibit some disadvantages ...
Hieu Tran Doan Trung, Young-Sik Ghim, Hyug-Gyo Rhee   +2 more
doaj   +1 more source

Achromatic diffractive liquid-crystal optics for virtual reality displays

Light: Science & Applications, 2023
Diffractive liquid-crystal optics is a promising optical element for virtual reality (VR) and mixed reality as it provides an ultrathin formfactor and lightweight for human factors and ergonomics.
Zhenyi Luo, Yannanqi Li, John Semmen, Yi Rao, Shin-Tson Wu   +4 more
doaj   +1 more source