scholarly journals Feasibility of manipulating correlated color temperatures with a phosphor converted high-powered light emitting diode white light source

2010 ◽  
Author(s):  
Matthew Michael Little
Keyword(s):  
Light Source ◽  
White Light ◽  
Light Emitting Diode ◽  
White Light Source ◽  
Light Emitting

Detection of micro/nano-particle concentration using modulated light-emitting diode white light source

2019 ◽  
Vol 285 ◽  
pp. 89-97 ◽  
Author(s):  
Wenxiu Zhao ◽  
Haibo Yu ◽  
Yangdong Wen ◽  
Feifei Wang ◽  
Yang Yang ◽  
...  
Keyword(s):  
Light Source ◽  
White Light ◽  
Particle Concentration ◽  
Light Emitting Diode ◽  
Nano Particle ◽  
White Light Source ◽  
Light Emitting ◽  
Modulated Light

scholarly journals Colour-Encoded Electroluminescent White Light-emitting Diode Enabled by Perovskite-Cu-In-S Quantum Composites

2021 ◽  
Author(s):  
Seung-Bum Cho ◽  
Jung Inn Sohn ◽  
Sang-Seok Lee ◽  
Seung-Gyun Moon ◽  
Bo Hou ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Source ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Large Area ◽  
Solution Processed ◽  
Light Emitting ◽  
Ambient Lighting ◽  
White Light Emitting Diodes

Solution-processed quantum dot (QD) white light-emitting diodes (WLEDs) have received much attention as a viable light source in the next-generation large-area ambient lighting, flexible photonics and full-colour display backlighting technologies....

Fabrication of Color-Tunable Blue-Violet Organic Light Emitting Diodes for White Light Source

2016 ◽  
Vol 5 (6) ◽  
pp. R104-R109 ◽  
Author(s):  
Hsin-Wei Lu ◽  
Huei-Ling Weng ◽  
Po-Ching Kao ◽  
Sheng-Yuan Chu ◽  
Yung-Der Juang
Keyword(s):  
Light Source ◽  
White Light ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
White Light Source ◽  
Light Emitting ◽  
Organic Light ◽  
Color Tunable

A low-cost spectrometer to analyse the purity of honey

2021 ◽  
Vol 57 (2) ◽  
pp. 025004
Author(s):  
L F Bestari ◽  
Sarwanto ◽  
Pujayanto ◽  
W P Syam ◽  
D Harjunowibowo
Keyword(s):  
Light Source ◽  
White Light ◽  
Measurement Accuracy ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Light Spectrum ◽  
Light Emitting ◽  
Average Accuracy

Abstract Light spectrum dispersion is an exciting subjectin science because of its beautiful atmospheric colour phenomenon which attracts students. However, to see the phenomenon is not easy since it needs a spectrometer, which is commonly expensive. Therefore, the present study aims to describe a low-cost spectrometer for investigating lighting spectrum and analysing the purity of honey as a pedagogical students’ project. The spectrometer was constructed from a webcam connected to a laptop, a free spectrometer software, DVD disk, and black cardboard. The calibration of the developed spectrometer used an Argon (Ar) lamp. Afterwards, measurement tests were carried out by using Neon (Ne) and Xenon (Xe) lamps. A white light-emitting diode was used as a light source to measure several types of honey wavelengths. The results from the experiment show that the wavelength of Ar, Ne, and Xe are (503 ± 4) nm, (463 ± 3) nm, and (451 ± 3) nm respectively. The measurement accuracy of the spectrometer is 99.5%. In addition, the commercial honey characterisations show that pure honey tends to have an excellent and smooth spectrum with one peak. On the contrary, the adulteries honeys show a rough wave with many peaks representing the inhomogeneous ingredients. It is found that the average accuracy for honey spectrum is 99.8%. Moreover, the low-cost spectrometer can be built and used easily by students for educational purposes.

Comparison of the effects of operating microscopes with light emitting diode and halogen light source on the eye: a rabbit study

2021 ◽  
pp. 1-7
Author(s):  
Bahri Aydın ◽  
Armagan Ozgur ◽  
Huseyin Baran Ozdemir ◽  
Pınar Uyar Gocun ◽  
Mehmet Arda Inan ◽  
...  
Keyword(s):  
Light Source ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Halogen Light ◽  
Halogen Light Source

scholarly journals Author Correction: Crystal structure and optical properties of a high-density InGaN nanoumbrella array as a white light source without phosphors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Tetsuya Kouno ◽  
Masaru Sakai ◽  
Katsumi Kishino ◽  
Akihiko Kikuchi ◽  
Naoki Umehara ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Optical Properties ◽  
Light Source ◽  
White Light ◽  
High Density ◽  
White Light Source

A Correction to this paper has been published: https://doi.org/10.1038/s41427-021-00298-9

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