Chromaticity Coordinates of Paints

Color Imaging ◽  
2008 ◽  
pp. 959-959
Keyword(s):  
Chromaticity Coordinates

Colorimetric research of self-luminous objects in software and hardware environments by the method of multidimensional scales implementation

2020 ◽  
pp. 43-50
Author(s):  
Yauheniya N. Saukova
Keyword(s):  
Metrological Traceability ◽  
Point Of View ◽  
Intermediate Precision ◽  
Technical Vision ◽  
Wide Range ◽  
Chromaticity Coordinates ◽  
Unity Of Measurements ◽  
Software And Hardware ◽  
Luminous Objects ◽  
Reference Samples

It is shown that the issues of metrological traceability for extended self-luminous objects with a wide range of brightness have not yet been resolved, since the rank scales of embedded systems are used for processing digital images. For such scales, there is no “fixed” unit, which does not allow you to get reliable results and ensure the unity of measurements. An experiment is described to evaluate the accuracy of determining the intensity (coordinates) of the color of self-luminous objects. In terms of repeatability and intermediate precision compared to the reference measurement method, the color and chromaticity coordinates of self-luminous objects (reference samples) were determined by their multiple digital registration using technical vision systems. The possibilities of the developed methodology for colorimetric studies in hardware and software environments from the point of view of constructing a multidimensional conditional scale are determined.

scholarly journals White-emissive tandem-type hybrid organic/polymer diodes with (033, 033) chromaticity coordinates

2009 ◽  
Vol 17 (23) ◽  
pp. 21205 ◽  
Author(s):  
Tzung-Fang Guo ◽  
Ten-Chin Wen ◽  
Yi-Shun Huang ◽  
Ming-Wei Lin ◽  
Chuan-Cheng Tsou ◽  
...  
Keyword(s):  
Organic Polymer ◽  
Chromaticity Coordinates

scholarly journals Effects of Bi3+ Ion-Doped on the Microstructure and Photoluminescence of La0.97Pr0.03VO4 Phosphor

2021 ◽  
Vol 6 (3) ◽  
pp. 191-198
Author(s):  
Hao-Long Chen ◽  
Hung-Rung Shih ◽  
Sean Wu ◽  
Yee-Shin Chang
Keyword(s):  
White Light ◽  
Emission Intensity ◽  
Sol Gel ◽  
Blue Shift ◽  
Light Emitting ◽  
Light Region ◽  
Chromaticity Coordinates ◽  
Ion Doping ◽  
Ion Contents ◽  
Cie Chromaticity

The objective of this paper is to enhance the emission intensity of La0.97Pr0.03VO4 single-phased white light emitting phosphor. The Bi3+ ion-doped La0.97Pr0.03VO4 single-phased white light emitting phosphors are synthesized using a sol-gel method. The structure and photoluminescence properties of (La0.97-yBiy)Pr0.03VO4 (y = 0-0.05) phosphor are also examined. The XRD results show that the structure of La0.97Pr0.03VO4 phosphors with different concentrations of Bi3+ ion doping keeps the monoclinic structure. The SEM results show that the phosphor particles become smoother when the Bi3+ ion is doped. The excitation band for La0.97Pr0.03VO4 phosphor exhibits a blue shift from 320 nm to 308 nm as the Bi3+ ion contents are increased. The maximum emission intensity is achieved for a Bi3+ ion content of 0.5 mol%, which is about 30% greater than that with no Bi3+ ion doped. The CIE chromaticity coordinates are all located in the near white light region for different Bi3+ ion-doped La0.97Pr0.03VO4 phosphors.

scholarly journals Antioxidant activity, color chromaticity coordinates, and chemical characterization of monofloral honeys from Morocco

2017 ◽  
Vol 20 (9) ◽  
pp. 2016-2027 ◽  
Author(s):  
Giacomo Luigi Petretto ◽  
Carlo Ignazio Giovanni Tuberoso ◽  
Maurizio Antonio Fenu ◽  
Jonathan P. Rourke ◽  
Omar Belhaj ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Characterization ◽  
Chromaticity Coordinates

scholarly journals Chromaticity Study of Curcumin Dye Extracted from Curcuma longa L. Using for UV Light down Conversion for White Light Emitting Diode

2019 ◽  
Vol 290 ◽  
pp. 183-189
Author(s):  
Mahmood Al Shafouri ◽  
Naser Mahmoud Ahmed ◽  
Zainuriah Hassan ◽  
Munirah Abdullah Almessiere
Keyword(s):  
White Light ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Curcuma Longa ◽  
Color Temperature ◽  
Light Emitting ◽  
Chromaticity Coordinates ◽  
Major Factors ◽  
Color Rendering ◽  
Down Conversion

In thus study, Turmeric phosphor dye was extracted from Curcuma Longa L. via a simple technique using silica gel. The phosphor was used for light down-conversion of UV light for the manufacture white light emitting diode (WLED). The UV-LED was analyzed over 395nm wavelengths. The characteristics of the white light chromaticity were controlled by tuning the current and phosphor concentration. An optimum color rendering index (CRI) value of 63.4 was obtained. The chromaticity coordinates (CIE) and correlated color temperature (CCT) were measured for various currents and phosphor concentrations. The white phosphor exhibited CIE value of 0.355,0.338 and CCT of 4567 K. The concentration of phosphor and amount of applied current were confirmed to be major factors that control the intensity of white light emitted from the sample, where CIE and CRI of the emitted light steadily increased with the concentration of phosphor and current. Thus, phosphor concentration has a critical effect on conversion efficiency. Key words: Turmeric, phosphor, WLED, curcumin

scholarly journals Luminescence and energy transfer of co-doped Sr5MgLa2(BO3)6:Ce3+,Mn2+

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 67979-67987 ◽  
Author(s):  
Matthias Müller ◽  
Stefan Fischer ◽  
Thomas Jüstel
Keyword(s):  
Energy Transfer ◽  
Fluorescence Lifetime ◽  
Lifetime Measurements ◽  
Chromaticity Coordinates ◽  
Co Doped

The photoluminescence (PL) of co-doped Sr5MgLa2(BO3)6:Ce3+,Mn2+ and energy transfer from Ce3+ to Mn2+ were studied. PL and fluorescence lifetime measurements were performed at various temperatures. External quantum efficiencies and chromaticity coordinates were obtained.

Definition of chromaticity coordinates

2013 ◽  
Vol 39 (3) ◽  
pp. 317-318 ◽  
Author(s):  
Michael H. Brill
Keyword(s):  
Chromaticity Coordinates ◽  
Definition Of
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