Purposeful Suppression and Reconstruction Of White Light from LED

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F17%3A10243694" target="_blank" >RIV/61989100:27240/17:10243694 - isvavai.cz</a>
Result on the web
<a href="http://broadbandlight.vsb.cz/" target="_blank" >http://broadbandlight.vsb.cz/</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Purposeful Suppression and Reconstruction Of White Light from LED
Original language description
Light Emitting Diodes (LED) emitting white light find more and more using in everyday life. The white LEDs gradually replace the classical light sources. Therefore there is a possibility to use the white LEDs for illumination and also for communication. The main disadvantage of the white LED is a phosphorescent decay after a switching off of excitation blue light. This decay limits bandwidth and using of white LEDs for communication purposes. This article brings a manner how to evade this limitation. A part of original white LED spectrum is suppressed by an optical filter. Then the suppressed part is replaced by another LED. The correct choice of suitable LED enables to reconstruct the original spectrum. This solution removes the problem with decay because the white LED emits continuously. The communication LED will carry the data only. The scale of reconstruction of original white light is the colour coordinates x and y in diagram CIE 1931.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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