LED loj hlob teeb thev naus laus zis yog qhov tshiab. Ib qho ntawm nws qhov zoo yog qhov muaj peev xwm ua
tsim kom muaj ntau yam sib txawv emission spectra.
Hauv kab lus no, peb tham txog dab tsi ua rau tag nrho spectrum LED loj hlob lub teeb thiab seb
lawv muaj txiaj ntsig zoo rau kev cog ntoo.
Dab tsi yog ib txwm LED loj hlob lub teeb pom kev zoo?
Ib qho kev cog qoob loo LED cog kev loj hlob feem ntau siv ua ke ntawm xiav thiab liab LEDs. Koj
feem ntau tuaj yeem qhia los ntawm lub teeb liab -liab doog tawm - qhov no yog qhov tshwm sim ntawm kev sib xyaw xiav
thiab lub teeb liab.
Yog vim li cas ib txwm LED cog teeb siv cov qauv no yog cov nroj tsuag ua tau
photosynthesis zoo tshaj plaws hauv xiav thiab liab ib feem ntawm cov spectrum.
Saib ntawm qhov spectrum no, txawm li cas los xij, nws yog qhov tseeb tias tsuas yog ib qho nqaim ntawm tag nrho
pom pom tau npog. Qhov no yeej nyob deb ntawm qhov peb yuav hu tag nrho cov spectrum.
Feem ntau, cov teeb pom kev loj hlob siv monochromatic LEDs - piv txwv li LED xiav thiab LED liab. Koj
feem ntau tuaj yeem qhia los ntawm kev saib ntawm nws lub zog faib hluav taws xob, raws li qhia hauv qab no:
Tab sis yog tias lub teeb xiav thiab liab yog qhov zoo tshaj plaws ntawm kev koom nrog cov duab hluav taws xob, vim li cas peb thiaj saib xyuas
txog lwm yam wavelengths?
Cov lus teb yog tias muaj lwm cov txheej txheem uas cuam tshuam rau kev noj qab haus huv ntawm tsob ntoo thiab muaj zog uas yog
tsis yog qhov teeb meem ntau npaum li cas photosynthesis tshwm sim. Thaum kawg, qhov no tuaj yeem txhais tau tias siab dua
qoob loo zoo, txhim kho kev zoo nkauj, lossis cov ntsiab lus muaj txiaj ntsig zoo dua. Hauv lwm lo lus, zoo
es tsis yog kom muaj nuj nqis.
Lub ntsiab lus nruj ntawm tag nrho cov spectrum LED loj hlob teeb pom kev zoo
Tseem muaj kev tshawb fawb tseem ceeb uas tseem yuav tsum tau ua, tab sis ntau dua
thiab ntau qhov txiaj ntsig los ntawm kev sim thiab tshawb fawb tau taw qhia qhov tseeb tias cov nroj tsuag loj tuaj
zoo tshaj plaws nyob rau hauv qhov sib npaug spectrum.
Qhov no tuaj yeem piav qhia los ntawm qhov tseeb tias cov nroj tsuag tau hloov pauv los siv lub hnub nruab hnub nrig tsis yog
raws li khoom noj khoom haus tab sis teeb liab rau yam xws li paj thiab tsim txiv hmab txiv ntoo.
Yog li ntawd, cov lus txhais nruj ntawm tag nrho cov spectrum yuav suav nrog cov spectrum uas muaj lub zog
xws li ntawm ultraviolet mus rau infrared, ib yam li ntuj nruab hnub.
Ib lub teeb pom kev nrog hom kab mob no feem ntau tshwm dawb. Yog tias LED loj dua lub teeb
tso tawm lub teeb dawb, puas yog qhov ntawd ua rau nws ua kom pom dav zuj zus?
Cov lus teb tsis yog, thiab peb tham txog qhov no ntxiv hauv ntu tom ntej.
Txoj kev sib txawv los tsim lub teeb dawb
Tsis zoo li cov tsoos LED loj hlob teeb txoj hauv kev ntawm xiav thiab liab monochromatic LEDs, tag nrho
spectrum loj hlob teeb feem ntau yuav siv txheej phosphor.
Yog vim li cas txheej txheej phosphor yog qhov pab tau rau tag nrho cov teeb pom kev loj hlob tuaj yog tias phosphors
coj lub teeb los ntawm ib qho nqaim nthwv dej ntau (piv txwv li 460 nm xiav) thiab hloov nws mus rau a
ntau qhov ntev ntawm lub teeb pom kev ntev (piv txwv li 600 - 700 nm liab).
Los ntawm txheej txheej xiav LED nrog sib xyaw ntawm ntsuab, daj thiab/lossis liab phosphors, dav dua
kev pov hwm thoob plaws qhov pom pom pom tau tuaj yeem ua tiav.
Vim tias phosphors tso lub teeb ntawm ntau qhov sib txawv ntawm qhov sib txawv, qhov tshwm sim yog qhov sib npaug
sib tov ntawm cov xim uas ua rau lub teeb dawb.
Tsuas yog vim tias LED loj hlob lub teeb tawm lub teeb dawb, uas tsis tas yuav txhais tau tias nws yog
tiag tiag yog lub teeb pom kev puv puv.
Ib txoj hauv kev yooj yim yog los ntsuas nws qhov ntsuas xim xim (CRI). Qhov no yog qhov muaj txiaj ntsig
metric vim nws qhia peb tias nws zoo ib yam li nruab hnub nrig. CRI siab dua
qhia tias lub teeb pom kev zoo dua li nruab hnub nrig, uas yog qhov zoo tshaj,
tag nrho-spectrum lub teeb qhov chaw.
