Nyob rau niaj hnub no kev siv ntau ntawm LED cov ntxaij vab tshaus, txhawm rau ua kom muaj txiaj ntsig zoo ntawm kev siv tshuaj ntsuam xyuas, cov tuam txhab thov yuav tsum muaj kev nkag siab zoo ntawm kev saib xyuas LED. Txawm hais tias nws yog LED sab hauv tsev lossis sab nraum zoov LED zaub, cua sov yuav raug tsim thaum lub sijhawm ua haujlwm, thiab cov cua sov tsim tawm yuav ua rau qhov kub thiab txias ntawm LED zaub nce. Tab sis koj puas paub tias cov zaub muaj txiaj ntsig zoo li cas hauv kev ua haujlwm kub? Cov editor nram qab no yuav txheeb xyuas thiab txheeb xyuas nrog txhua tus.
Raws li cov xwm txheej ib txwm muaj, LED sab hauv tsev ua kom muaj cua sov tsawg dua vim qhov ci ntsa iab thiab tuaj yeem ua rau cua sov; Txawm li cas los xij, sab nraum zoov LED qhia ua kom muaj cua sov ntau vim qhov ci ntsa iab thiab yuav tsum tau dissipated los ntawm cua txias lossis axial kiv cua. Txij li thaum LED zaub yog cov khoom siv hluav taws xob, qhov nce ntawm qhov kub thiab txias yuav cuam tshuam rau lub teeb lwj ntawm LED teeb hlaws, cuam tshuam rau kev ua haujlwm ntawm tus tsav tsheb IC, thiab kev pabcuam lub neej ntawm LED zaub.
LED zaub
LED zaub qhib Circuit Court thiab tsis ua hauj lwm
Kev ua haujlwm kub ntawm LED zaub tshaj qhov ntsuas kub ntawm lub nti, uas yuav ua rau lub teeb pom kev zoo ntawm LED zaub kom txo qis, ua rau pom tseeb lub teeb lwj, thiab ua rau muaj kev puas tsuaj; LED zaub yog feem ntau encapsulated nrog pob tshab epoxy resin, yog tias qhov sib txuas ntawm qhov kub thiab txias tshaj qhov hloov pauv ntawm qhov kub (feem ntau yog 125 degree), cov khoom ntim yuav hloov mus rau hauv cov duab rubbery thiab cov thermal expansion coefficient yuav nce siab, uas yuav ua rau cov khoom ntim tau hloov pauv mus rau cov khoom siv roj hmab thiab cov thermal expansion coefficient yuav nce siab, uas yuav ua rau cov khoom ntim tau hloov pauv mus rau cov khoom siv roj hmab thiab cov thermal expansion coefficient yuav nce siab heev. LED zaub qhib thiab ua tsis tiav.
Qhov kub ntau dhau yuav cuam tshuam rau lub teeb tawg ntawm lub vijtsam LED
Lub neej ntawm LED zaub yog tshwm sim los ntawm nws lub teeb lwj, uas yog, raws li lub sijhawm dhau mus, qhov ci ntsa iab yuav qis dua thiab qis dua, mus txog thaum nws tawm mus. Nws yog feem ntau txhais raws li lub neej ntawm LED zaub thaum lub luminous flux decays los ntawm 30. Kub kub yog lub ntsiab qhov chaw ntawm LED zaub teeb lwj thiab shortening lub neej ntawm LED zaub. Lub teeb attenuation ntawm ntau hom ntawm LED zaub yog txawv, feem ntau coj zaub manufacturers yuav muab ib tug txheej txheem teeb attenuation nkhaus. Lub attenuation ntawm lub luminous flux ntawm LED zaub tshwm sim los ntawm qhov kub thiab txias yog unrecoverable, thiab lub luminous flux ua ntej lub unrecoverable lub teeb attenuation ntawm lub LED zaub tsis tshwm sim, uas yog hu ua "thawj luminous flux" ntawm LED zaub.
LED zaub
Kev nce hauv qhov kub thiab txias yuav txo qhov luminous efficiency ntawm LED npo
Raws li qhov kub thiab txias, qhov concentration ntawm electrons thiab qhov yuav nce, qhov sib txawv band yuav txo, thiab cov electron txav yuav txo; Raws li qhov kub thiab txias, qhov tshwm sim ntawm hluav taws xob recombination ntawm electrons thiab qhov nyob rau hauv lub peev xwm zoo txo, uas ua rau tsis-radiative recombination. Thaum tshav kub kub), yog li txo qis hauv quantum efficiency ntawm LED zaub; qhov nce hauv qhov kub thiab txias ua rau lub ncov xiav ntawm lub nti hloov mus rau qhov kev taw qhia yoj ntev, uas ua rau lub emission wavelength ntawm lub nti thiab qhov excitation wavelength ntawm phosphor tsis sib xws, thiab nws kuj yuav ua rau lub teeb sab nraud ntawm lub teeb dawb LED. tso saib. Lub extraction efficiency yog txo; Raws li qhov kub thiab txias, lub quantum efficiency ntawm phosphor txo, lub teeb emission txo, thiab sab nraud lub teeb extraction efficiency ntawm LED zaub screen txo; Kev ua haujlwm ntawm silica gel cuam tshuam zoo heev los ntawm qhov kub thiab txias. Raws li qhov kub thiab txias, cov thermal stress nyob rau hauv lub silica gel nce, uas ua rau ib tug txo nyob rau hauv lub refractive index ntawm silica gel, yog li cuam tshuam lub teeb efficiency ntawm LED zaub.
Qhov cuam tshuam ntawm qhov kub thiab txias ntawm qhov luminous wavelength ntawm LED npo
Lub luminous wavelength ntawm LED zaub screen feem ntau yuav muab faib ua lub ncov wavelength thiab qhov tseem ceeb wavelength. Lub ncov wavelength yog lub wavelength nrog lub teeb siab tshaj plaws, thiab qhov tseem ceeb wavelength tuaj yeem txiav txim siab los ntawm X thiab Y chromaticity kev sib koom ua ke, cuam tshuam cov xim pom los ntawm tib neeg lub qhov muag. Pom tseeb, qhov kev hloov pauv ntawm lub teeb-emitting wavelength ntawm LED zaub screen tshwm sim los ntawm qhov sib txuas ntawm qhov kub thiab txias yuav ncaj qha ua rau tib neeg lub qhov muag muaj kev nkag siab sib txawv ntawm lub teeb-emitting xim ntawm LED zaub screen. Rau ib qho khoom siv LED, qhov sib txawv ntawm cov khoom siv nyob rau hauv lub teeb-emitting cheeb tsam ncaj qha txiav txim lub wavelength los yog xim ntawm lub teeb emission ntawm lub teeb. Raws li qhov kub thiab txias, qhov sib txawv ntawm cov khoom siv yuav txo qis, uas yuav ua rau lub cuab yeej emit ntev wavelengths thiab liab hloov xim.
LED zaub
Qhov kub ntau dhau yuav txwv qhov kev txhaj tshuaj siab tshaj plaws ntawm lub vijtsam LED
Thaum yuav ib qho LED zaub, ua tib zoo xaiv lub LED zaub nti hom, ntim cov chaw tsim khoom, tus tsav tsheb IC hom, thiab hloov lub hwj huam mov hom. Qhov zoo ntawm lub hom yuav cuam tshuam rau qhov zoo ntawm LED zaub nws tus kheej, thiab lub hom phiaj yog siab. Cov khoom nws tus kheej ua kom muaj cua sov tsawg dua thiab tuaj yeem tswj tau qhov kub thiab txias ntawm LED zaub, yog li ua kom lub neej ntev ntawm LED zaub.
LED zaub muaj txoj kev loj hlob zoo vim nws qhov zoo ntawm kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab lub neej ntev. LED zaub yog rhiab heev rau qhov kub thiab txias: nws yuav cuam tshuam rau lub neej, lub teeb efficiency, xim, thiab lwm yam ntawm LED zaub. Yog li qhov kub thiab txias yog qhov tseem ceeb heev rau LED zaub.
