| Color temperature tunable white-light light-emitting diode clusters with high color rendering index. | |
| | |
MedLine Citation:
|
PMID: 20733639 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
A model for LED spectra at different drive currents is established. The simulation program of color rendering of a white-light LED cluster is developed according to the principle of additive color mixtures. The program can predict not only the spectral power distribution, chromaticity coordinates, correlated color temperature (CCT), and color rendering index (CRI), but also the drive currents of LEDs, luminous flux, input power, and luminous efficacy of white-light LED clusters. Three types of CCT tunable white-light LED clusters [warm-white/red/green/blue (WW/R/G/B), neutral-white (NW)/R/G/B, and cool-white/R/amber/G clusters] with high CRI are found by simulation analysis and realized in our laboratory. The experimental results show that the WW/R/G/B cluster can realize CCT tunable white light with high CRIs (above 90) but lower luminous efficacies (below 65 lm/W), and that the NW/R/G/B cluster can realize CCT tunable white light with high CRIs (above 86), as well as high luminous efficacies (above 64 lm/W). |
| | |
Authors:
|
Guoxing He; Lihong Zheng |
Related Documents
:
|
19426089 - Cosmetic coloration in birds: occurrence, function, and evolution. 12678619 - Topography of the chromatic pattern-onset vep. 20119099 - Color-rendering capability of commercial lamps. 7248339 - Scaling of color sensation by magnitude estimation: a contribution to opponent-colors t... 5263769 - The mating advantage of rare males in drosophila. 7123869 - Color vision in the peripheral retina under photopic conditions. 10967229 - Experimental manipulation of a unique cue in pavlovian scr conditioning with humans. 19817429 - Molecular weight and polydispersity of calf-thymus dna: static light-scattering and siz... 2932529 - A psychophysiological investigation of the continuous flow model of human information p... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Applied optics Volume: 49 ISSN: 1539-4522 ISO Abbreviation: Appl Opt Publication Date: 2010 Aug |
Date Detail:
|
Created Date: 2010-08-24 Completed Date: 2010-12-07 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0247660 Medline TA: Appl Opt Country: United States |
Other Details:
|
Languages: eng Pagination: 4670-6 Citation Subset: - |
Affiliation:
|
Department of Applied Physics, Dong Hua University, 1882 Yan'an Road (W), Shanghai 200051, China. gxhe@dhu.edu.cn |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Aggregation process of optical properties and temperature over heterogeneous surfaces in infrared do...
Next Document: Nasa patter.