Results 31 to 40 of about 7,097 (301)

Molding of diffractive glass lenses

open access: yes, 2022
S.59-60The trend towards miniaturization and functional integration of optical systems and components is also reflected in the increased demand for structured glass optics.
Klocke, Fritz   +4 more
core  

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

open access: yesMedžiagotyra
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   +8 more
doaj   +1 more source

Design, Analysis, and Manufacturing of Diffractive Achromatic Optical Systems

open access: yesMicromachines
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   +5 more
doaj   +1 more source

Laser smoothing of binary gratings and multilevel etched structures in fused silica

open access: yes, 2010
We describe a promising approach to the processing of micro-optical components, where CO2 laser irradiation in raster scan is used to generate localized surface melting of binary or multilevel structures on silica, fabricated by conventional reactive-ion
Wlodarczyk, Krystian Lukasz   +4 more
core   +1 more source

Computational imaging using lightweight diffractive-refractive optics

open access: yes, 2015
Diffractive optical elements (DOE) show great promise for imaging optics that are thinner and more lightweight than conventional refractive lenses while preserving their light efficiency. Unfortunately, severe spectral dispersion currently limits the use
Heide, Felix   +5 more
core   +1 more source

A new, sensitive diffractive optic angle meter

open access: yes, 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   +8 more
core   +1 more source

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

open access: yesPhotonics
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   +2 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

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

open access: yesPhotonics
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   +8 more
doaj   +1 more source

Achromatic diffractive liquid-crystal optics for virtual reality displays

open access: yesLight: 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   +4 more
doaj   +1 more source

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