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LED Paub Qhov Tseeb

LED Paub Qhov Tseeb

Nov 09, 2017

1.1 LED Phosphor hmoov

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Ib, kev paub txog cov dawb LED

Raws li peb txhua tus paub, lub teeb dawb yog lub teeb sib txuam, thiab dawb LED muaj plaub cov kev siv. Namely

(1) Muaj nyob rau hauv RGB (los yog RYB) tri-colour los yog lwm lub teeb ua ke ib qho ntawm ntau lub teeb ua ke, tiam sis nws yuav tsum muaj qhov tsis tshua muaj neeg sab nraud uas muaj "semi-permeable" uas "sib tov" lub teeb rau nqi siab thiab tsis tshua muaj zog. Tam sim no tsuas yog Cree lub XlampXP_E thiab Osram MultiClipLED thiaj ua tau tiav.

(2) Nws yog ib qho qauv quantum, uas siv ntau cov khaubncaws sab nraud povtseg ntawm kev siv tshuab doping ua rau cov emit ntau emission hauv cheeb tsam pom. Lub tsab ntawm Opto Plus tau nkag tau rau hauv america.

(3) Lub nti yog lub teeb taws ua pa taws uas muaj qhov ua haujlwm tsis muaj zog, tab sis kev ua kom tsis muaj zog tsis tuaj yeem nkag siab txog theem.

(4) Tam sim no, ntau yooj yim, ntau txhim khu kev qha, ntau dua daim ntawv thov yog qhov tseem yog ntxiv cov kua phosphor.


二, Blue chip + daj phaus dej yog txoj hauv kev dav

Chip + fluorescent dawb LED muaj ob lub tswv yim.

(1) UV LED nti + liab, ntsuab thiab xiav phosphor.

(2) Blue LED chip + fluorescence (daj, xim liab lossis daj).

Xav txog kev nyab xeeb thiab kev ua kom zoo, cov xim xiav chip + fluorescence yog siv dav hauv cov xim xiav npog nrog fluorescent hmoov, fluorescent hmoov absorbing ib sab ntawm LED xiav los yog liab ntsuab daj lub teeb tawm ntawm lub teeb dawb, thiab xiav ua ke, yog li nyob rau hauv LED, fluorescent hmoov feem ntau hu ua cov khoom siv hloov dua siab tshiab.


三, Xaiv cov khoom phosphor

Tam sim no, txoj kev ua lub ntsiab ntawm LED yog siv xiav teeb nti + daj phosphor. Qhov sib txuam ntawm qhov muag teeb nti nrog fluorescence yog ib qho tseem ceeb uas cuam tshuam txog qhov kawg hluav taws xob thiab kho qhov muag ntawm cov teeb meem ntawm LED. Kev xaiv ntawm phosphor yuav tsum muaj raws li ob txoj cai:

(1) The excitation spectrum ntawm phosphor ntais cov spectrum emission ntawm xiav lub teeb nti thiaj li los txhim kho cov kev hloov pauv ntawm phosphor.

(2) Cov pa roj carbon dioxide ntawm cov fluorescence yog sib phim nrog cov xim cua ntawm cov xiav nti, yog li ntawd kev sib txuas ntawm xiav lub teeb thiab daj ntsuab lub teeb yuav ua rau lub teeb dawb nrog zoo zoo.

(3) Ntxiv rau lub hom phiaj fluorescent hmoov, kuj muaj qee cov ntsiab lus rau cov khoom ntawm phosphor xwb, tshwjxeeb phosphor LED, LED li lub teeb qhov chaw, lub zos kub ntawm LED nti nce siab txog 200 degrees Celsius, yuav tsum phosphor

1. zoo thermal stability.

2. ntau dua cov nqi quantum.

3. lub teeb lub plhaub yog qhov zoo.

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Raws li pom saum toj no, hauv CIE chromaticity daim duab, qhov kev sib tshuam ntawm txoj kab ntawm lub phiaj dawb lub teeb nrog xiav xim ntawm lub nti thiab kev sib tshuam ntawm chromaticity ntug yog qhov ntau ntawm cov Fluorescent Pink coordinates.

Tom qab ntawd raws li kev ua lag luam yuav tsum tau muab rau hauv cov kab kev xaiv ntawm phosphor.

Thawj phosphor siv nyob rau hauv cov dawb LEDs yog YAG (Y3Al5O12: Ce) uas absorbs xiav lub teeb thiab tawm lub teeb daj, thiab tam sim no feem ntau yog siv cov phosphor




Yees duab: yawg> p > img

Camsim koj mus txog 2457 lub sij hawm luv luv, Koj tsis tau muaj peev xwm khiav tawm ntawm 47543 Hlis.