Purposeful Suppression and Reconstruction Of White Light from LED

Kód výsledku v 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>

Výsledek na webu

<a href="http://broadbandlight.vsb.cz/" target="_blank" >http://broadbandlight.vsb.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Purposeful Suppression and Reconstruction Of White Light from LED

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Purposeful Suppression and Reconstruction Of White Light from LED

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20203 - Telecommunications

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů