Yellow-ring measurement of white LED in various lighting environments
Optical Review, ISSN: 1349-9432, Vol: 20, Issue: 2, Page: 232-235
2013
- 17Citations
- 2Captures
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Article Description
White LEDs (WLEDs) have various yellow-ring (YR) effects when projected onto differing backgrounds. These effects are determined by the material that the WLED is projected onto. In our previous study, the YR phenomenon was expressed as the yellow-ring index (YRI), which comprises yellow light intensity (Y) and light intensity (I), and the maximum value of the YRI curve is a crucial optical parameter for determining the degree of the YR phenomenon. This study presents a modified evaluation model using YR degree and four YR diagrams (the YRIs are less than 5, 5 to 10, 10 to 15, and greater than 15) as the criterion for WLED quality control. © 2013 The Optical Society of Japan.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84875538323&origin=inward; http://dx.doi.org/10.1007/s10043-013-0042-1; http://link.springer.com/10.1007/s10043-013-0042-1; http://link.springer.com/content/pdf/10.1007/s10043-013-0042-1; http://link.springer.com/content/pdf/10.1007/s10043-013-0042-1.pdf; http://link.springer.com/article/10.1007/s10043-013-0042-1/fulltext.html; https://dx.doi.org/10.1007/s10043-013-0042-1; https://link.springer.com/article/10.1007/s10043-013-0042-1
Springer Science and Business Media LLC
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