Results 21 to 30 of about 4,339,973 (298)

Wavelength-Independent Correlation Detection of Aberrations Based on a Single Spatial Light Modulator

open access: yesPhotonics, 2022
The cumulative achievements in the fields of science and technology have allowed us to substantially approach the solution of the phase problem in optics.
Nikita Stsepuro   +3 more
doaj   +1 more source

Low-cost extra-low voltage LED dimmer for tuneable white lighting [PDF]

open access: yes, 2019
The colour appearance of light sources has a major impact on how people perceive space. With LED illumination lighting, the colour output can be tuned to virtually any perceivable colour, including any hue of white light. It has been established that the
Hrbáč, Roman   +3 more
core   +1 more source

Highly Uniform White Light-Based Visible Light Communication Using Red, Green, and Blue Laser Diodes

open access: yesIEEE Photonics Journal, 2018
With the development of wireless optical communication and solid-state lighting, the high efficiency, large bandwidth, and high uniform white light source becomes more and more important.
Jie Yang   +7 more
doaj   +1 more source

Phosphorous Diffuser Diverged Blue Laser Diode for Indoor Lighting and Communication. [PDF]

open access: yes, 2015
An advanced light-fidelity (Li-Fi) system based on the blue Gallium nitride (GaN) laser diode (LD) with a compact white-light phosphorous diffuser is demonstrated for fusing the indoor white-lighting and visible light communication (VLC). The phosphorous
Chen, Hsiang-Yu   +10 more
core   +1 more source

The optimization of semiconductor light, generating white light, heating regime

open access: yesLietuvos Matematikos Rinkinys, 2023
In this work the mathematical model of semiconductor light was employed. There were offered the distribution cases for monochromatic lighting sources.
Jurgita Dabulytė, Feliksas Ivanauskas
doaj   +3 more sources

Common White Light Sources [PDF]

open access: yes, 2019
Chapter 5 In this Chapter we describe the features of common light sources. We first present the spectral features of the sun and discuss its colorimetric properties. Next, we summarize the properties of traditional light sources including incandescent lamps, fluorescent lamps, and high-pressure sodium lamps.
Erdem, Talha, Demir, Hilmi Volkan
openaire   +2 more sources

The Effect of Different Qualities of LED Light on the Morphophysiological Indicators of Cucumis sativus L. var. Officer [PDF]

open access: yesMajallah-i ̒Ulum-i Bāghbānī
Introduction In addition to providing the necessary energy for photosynthesis, light controls many plant metabolic processes. Nowadays, the use of supplemental light significantly improves the quality of the food product in the conditions of lack of ...
M. Zare Mehrjerdi   +4 more
doaj   +1 more source

Future capabilities of CME polarimetric 3D reconstructions with the METIS instrument: A numerical test [PDF]

open access: yes, 2015
Understanding the 3D structure of coronal mass ejections (CMEs) is crucial for understanding the nature and origin of solar eruptions. To derive information on the 3D structure of CMEs from white-light (total and polarized brightness) images, the ...
Bemporad, Alessandro   +2 more
core   +4 more sources

Synthetic Direct Impact Light Curves of the Ultracompact AM CVn Binary Systems V407 Vul and HM Cnc [PDF]

open access: yes, 2008
The interacting binary white dwarf (AM CVn) systems HM Cnc and V407 have orbital periods of 5.4 min and 9.5 min, respectively. The two systems are characterized by an "on/off" behaviour in the X-ray light curve, and optical light curves that are nearly ...
Barros   +39 more
core   +4 more sources

The Statistical Analyses of the White-Light Flares: Two Main Results About Flare Behaviours

open access: yes, 2012
We present two main results, based on the models and the statistical analyses of 1672 U-band flares. We also discuss the behaviours of the white-light flares. In addition, the parameters of the flares detected from two years of observations on CR Dra are
Dal, H. A.
core   +1 more source

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