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Luminance and chromaticity characteristics of different phosphor types in laser lighting [PDF]

JPhys Photonics
Laser lighting is emerging as a viable replacement for other light sources in applications requiring high luminance not achievable with LEDs. Phosphor materials for laser lighting are often optimized in terms of luminous efficiency and/or colorimetric ...
Ole Bjarlin Jensen, Xinrong Chen, Jian Xu, Dennis Dan Corell, Carsten Dam-Hansen   +4 more
doaj   +2 more sources

Photopic and Mesopic Contrast Sensitivity Function in the Presence of Glare and the Effect of Filters in Young Healthy Adults

Frontiers in Psychology, 2021
Purpose: The aim of this study was to evaluate the effect of four different filters on contrast sensitivity under photopic and mesopic conditions with and without glare.Methods: A forced choice algorithm in a Bayesian psychophysical procedure was ...
Alberto Domínguez-Vicent, Emma Helghe, Marika Wahlberg Ramsay, Abinaya Priya Venkataraman   +3 more
doaj   +1 more source

Electroretinographic responses to luminance and cone-isolating white noise stimuli in macaques

Frontiers in Neuroscience, 2022
Electroretinograms (ERGs) are mass potentials with a retinal origin that can be measured non-invasively. They can provide information about the physiology of the retina. Often, ERGs are measured to flashes that are highly unnatural stimuli.
Jan Kremers, Avinash J. Aher, Neil R. A. Parry, Neil R. A. Parry, Nimesh B. Patel, Laura J. Frishman   +5 more
doaj   +1 more source

Classification and Segmentation of Longitudinal Road Marking Using Convolutional Neural Networks for Dynamic Retroreflection Estimation

Sensors, 2020
Road markings constitute one of the most important elements of the road. Moreover, they are managed according to specific standards, including a criterion for a luminous contrast, which can be referred to as retroreflection.
Chanjun Chun, Taehee Lee, Sungil Kwon, Seung-Ki Ryu   +3 more
doaj   +1 more source

Évaluation des caractéristiques fonctionnelles et rhéologiques des farines d'igname pilée instantanées (Dioscorea rotundata) obtenues à partir des tubercules des cultivars utilisés comme parents dans un programme de sélection au Bénin

Biotechnologie, Agronomie, Société et Environnement, 2021
Assessment of the functional and rheological characteristics of instant pounded yam (Dioscorea rotundata) flour obtained from the tubers of cultivars used as parents in a breeding program in Benin Description of the subject. In West Africa, yam tubers
Jeannette Fakorede, Marius Eric Badoussi, Yêyinou Laura Estelle Loko, Faouziath Sanoussi, Gbèblonoudo Anicet Dassou, Célestin Tchekessi, Innocent Bokossa Yahou, Anagonou Alexandre Dansi   +7 more
doaj   +1 more source

Display characteristics and their impact on digital pathology: A current review of pathologists' future “microscope”

Journal of Pathology Informatics, 2020
Digital displays (monitors) are an indispensable component of a pathologists' daily workflow, from writing reports, viewing whole-slide images, or browsing the Internet.
Jacob T Abel, Peter Ouillette, Christopher L Williams, John Blau, Jerome Cheng, Keluo Yao, Winston Y Lee, Toby C Cornish, Ulysses G J Balis, David S McClintock   +9 more
doaj   +1 more source

“Blue Sky Effect”: Contextual Influences on Pupil Size During Naturalistic Visual Search

Frontiers in Psychology, 2021
Pupil size is influenced by cognitive and non-cognitive factors. One of the strongest modulators of pupil size is scene luminance, which complicates studies of cognitive pupillometry in environments with complex patterns of visual stimulation.
Steven M. Thurman, Russell A. Cohen Hoffing, Anna Madison, Anthony J. Ries, Stephen M. Gordon, Jonathan Touryan   +5 more
doaj   +1 more source

Model Calibration Methodology to Assess the Actual Lighting Conditions of a Road Infrastructure

Infrastructures, 2019
Street lighting plays an important role in the comfort and safety of drivers and pedestrians, so the control and management of the lighting systems operation and consumption is an essential service for a city. In this document, a methodology is presented
Ana Ogando-Martínez, Francisco Troncoso-Pastoriza, Pablo Eguía-Oller, Enrique Granada-Álvarez, Aitor Erkoreka   +4 more
doaj   +1 more source

Mini-LEDs with Diffuse Reflection Cavity Arrays and Quantum Dot Film for Thin, Large-Area, High-Luminance Flat Light Source

Nanomaterials, 2021
Mini-light-emitting diodes (mini-LEDs) were combined with multiple three-dimensional (3D) diffuse reflection cavity arrays (DRCAs) to produce thin, large-area, high-brightness, flat light source modules.
Zhi Ting Ye, Yuan Heng Cheng, Ku Huan Liu, Kai Shiang Yang   +3 more
doaj   +1 more source

The influence of modern headlamps on the recognition of portable traffic signs and warning triangles

Acta Polytechnica CTU Proceedings, 2023
This article focuses on the issue of portable traffic signs and their visibility using different light sources such as halogen, Xenon, or LED. The measured values of luminance and retroreflection for each object are used to distinguish the individual ...
Martin Rak, Tereza Tmejová, Tomáš Bilík, David Jelínek, Albert Bradáč   +4 more
doaj   +1 more source