Results 21 to 30 of about 100,646 (310)

Aberrational vignetting and eikonal theory [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2009
If an aperture stop is located inside of a real optical system, then a variation of an entrance pupil depends on the inclination of the incident beam of light rays.
Gitin Andrey
doaj   +1 more source

Chromatic aberration in metalenses

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   +3 more sources

Just-Noticeable Levels of Aberration Correction

open access: yesJournal of Optometry, 2008
Purpose: The objectives of this study were to determine whether the correction of higher-order aberrations (HOA) would be detectable by “normal” subjects and whether a full correction is necessary or better than a partial correction of the main HOA (i.e.,
Richard Legras, Hélène Rouger
doaj   +1 more source

Visual outcome and optical quality after bilateral implantation of aspheric diffractive multifocal, aspheric monofocal and spherical monofocal intraocular lenses: a prospective comparison

open access: yesInternational Journal of Ophthalmology, 2013
AIM: To evaluate the visual function after bilateral implantation of aspheric diffractive multifocal Tecnis ZMA00, aspheric monofocal ZA9003 versus spherical monofocal Akreos Adapt intraocular lenses (IOLs).METHODS: Tecnis ZMA00, Tecnis ZA9003 or Akreos ...
Ke Yao, Xia Li, Pan-Pan Ye
doaj   +1 more source

SPECIAL ASPECTS OF INITIAL OPTICAL SCHEME SELECTION FOR DESIGN OF NON-IMAGING OPTICAL SYSTEMS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research. The research results, structural composition analysis and the parametric synthesis of the projected imaging and non-imaging optical systems were presented.
R. V. Anitropov   +6 more
doaj   +1 more source

STUDY OF BIREFRINGENCE INFLUENCE ON IMAGE QUALITY OF PHOTOLITHOGRAPHY SYSTEMS IN VIEW OF PARTIALLY-COHERENT LIGHT SOURCE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
Subject of study. A vector model for conversion of electromagnetic radiation in optical systems is considered, taking into account the influence of birefringence, as well as partially coherent illumination. Model.
E. A. Nikulina, V. A. Zverev
doaj   +1 more source

Aberration of the citation

open access: yesAccountability in Research, 2015
Multiple inherent biases related to different citation practices (for e.g., self-citations, negative citations, wrong citations, multi-authorship-biased citations, honorary citations, circumstantial citations, discriminatory citations, selective and arbitrary citations, etc.) make citation-based bibliometrics strongly flawed and defective measures.
openaire   +4 more sources

Objective Prediction of Human Visual Acuity Using Image Quality Metrics

open access: yesApplied Sciences, 2023
This work addresses the objective prediction of human uncorrected decimal visual acuity, an unsolved challenge due to the contribution of both physical and neural factors. An alternative approach to assess the image quality of the human visual system can
Julián Espinosa Tomás   +4 more
doaj   +1 more source

Aberration-free three dimensional micromachining in glass with spatiotemporally shaped femtosecond laser pulses

open access: yes, 2018
We observe that focusing a femtosecond laser beam simultaneously chirped in time and space domains in glass can efficiently suppress the optical aberration caused by the refractive index mismatch at the interface of air and the glass sample.
Wei Chu (2008030)   +7 more
core   +1 more source

Base Curve of Progressive Addition Lenses Influences Clear Vision and Stereopsis Area

open access: yesClinical Optometry, 2020
Go Mawatari,1 Saeko Uchida,2 Nobuhisa Nao-i1 1Department of Ophthalmology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan; 2Department of Orthoptics and Visual Sciences, Kyusyu University of Health and Welfare, Nobeoka, Miyazaki ...
Mawatari G, Uchida S, Nao-i N
doaj  

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