Results 11 to 20 of about 243,834 (314)

Broadband cholesteric liquid crystal lens for chromatic aberration correction in catadioptric virtual reality optics.

open access: yesOptics Express, 2021
A planar and broadband cholesteric liquid crystal (CLC) lens is designed, fabricated, and hybridized with a refractive lens to form a catadioptric pancake lens for virtual reality (VR) displays.
Yannanqi Li   +6 more
semanticscholar   +3 more sources

Analysis of Chemical Composition of Extractives by Acetone and the Chromatic Aberration of Teak (Tectona Grandis L.F.) from China. [PDF]

open access: yesMolecules, 2019
In order to clarify the chemical color change of teak (Tectona grandis L.F.), the difference of chemical composition between the heartwood and sapwood of teak was investigated by gas chromatography–mass spectrometry (GC-MS) based on the acetone ...
Qiu H, Liu R, Long L.
europepmc   +2 more sources

Altering chromatic aberration: how this latest trend in intraocular-lens design affects visual quality in pseudophakic patients [PDF]

open access: yesEye and Vision, 2023
Background Chromatic aberration of the eye results from the dispersion of polychromatic light at the interfaces of ocular media. An intraocular lens (IOL) based approach utilizing the diffractive-multifocal principle has been proposed for its correction,
Grzegorz Łabuz   +4 more
doaj   +2 more sources

Measurement of Longitudinal Chromatic Aberration in the Last Crystalline Lens Surface Using Hartmann Test and Purkinje Images [PDF]

open access: yesSensors, 2022
Research has shown that longitudinal chromatic aberration (LCA) of the human eye is generated across all of the eye’s optical surfaces. However, it may not be necessary to measure the LCA from the first surface of the cornea to the retina, as it is known
Uriel Calderon-Uribe   +2 more
doaj   +2 more sources

Chromatic aberration in metalenses [PDF]

open access: yesAdvances in Applied Mathematics, 2021
This paper provides a mathematical approach to study chromatic aberration in metalenses. It is shown that radiation of a given wavelength is refracted according to a generalized Snell's law which together with the notion of envelope yields the existence of phase discontinuities.
Gutiérrez, Cristian E., Sabra, Ahmad
openaire   +4 more sources

Calibration and removal of lateral chromatic aberration in images [PDF]

open access: yesPattern Recognition Letters, 2007
This paper addresses the problem of compensating for lateral chromatic aberration in digital images through colour plane realignment. Two main contributions are made: the derivation of a model for lateral chromatic aberration in images, and the ...
Mallon, John, Whelan, Paul F.
core   +5 more sources

Chromatic-aberration-corrected diffractive lenses for ultra-broadband focusing. [PDF]

open access: yesSci Rep, 2016
We exploit the inherent dispersion in diffractive optics to demonstrate planar chromatic-aberration-corrected lenses. Specifically, we designed, fabricated and characterized cylindrical diffractive lenses that efficiently focus the entire visible band ...
Wang P, Mohammad N, Menon R.
europepmc   +2 more sources

FISH-Dist: An Automated Pipeline for 3D Genomic Spatial Distance Quantification in FISH Imaging [PDF]

open access: yesBioengineering
Accurate quantification of spatial distances between fluorescent signals in multi-channel 3D microscopy is essential for understanding genomic organization and gene regulation.
Benoit Aigouy   +5 more
doaj   +2 more sources

Transverse chromatic aberration across the visual field of the human eye.

open access: yesJ Vis, 2016
The purpose of this study was to measure the transverse chromatic aberration (TCA) across the visual field of the human eye objectively. TCA was measured at horizontal and vertical field angles out to ±15° from foveal fixation in the right eye of four ...
Winter S   +6 more
europepmc   +2 more sources

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