Lwm yam cuam tshuam 1cd = 1 lm / sr (lumen / stereoargon) = 1 Qhov Kev Ntsig. Nws txhais raws li: lub luminous flux tawm los ntawm lub teeb ci nyob rau hauv cov khoom lub kaum sab xis dΩ hauv cov kev taw qhia lossis lub luminous flux dΦ kis tau los ntawm qhov chaw tau txais lub teeb, qhov quotient ntawm uas yog qhov luminous siv I (hauv candela, cd). Lub hau npog sab nraud tuaj yeem ua PC PC raj, siab kub ua hauj 135 degrees. PC lub raj yog ua los ntawm LED npog, qhov kub nyob sab hauv tsev tuaj yeem ncav cuag 135 degrees, qhov kub sab nraud tuaj yeem tiv taus -45 degrees yam tsis muaj kev tawg. Nyob rau tam sim no, nws yog dav siv raws li cov xim ntsuab tshiab, ib puag ncig thiab phooj ywg txuag hluav taws xob. Teeb, taws teeb, roj thiab lwm qhov chaw.
Lub siab-zog LED thiaj li hu ua, feem ntau rau cov hluav taws xob muaj zog LED. Nws muaj peb hom qauv kawm:
Led high-power teeb hlaws yog hom ntawm LED teeb hlaws. Piv nrog qis-hluav taws xob LED teeb hlaws, coj hluav taws xob teeb lub teeb muaj hwj huam ntau dua, qhov ci ci dua thiab nqi dua. Qhov qes-fais fab LED teeb roj teeb nyob rau tam sim no yog 20mA, thiab cov rated tam sim no siab dua 20mA tuaj yeem suav ua qhov muaj zog loj. Cov lej hluav taws xob dav dav yog: 0.25w, 0.5w, 1w, 3w, 5w, 8w, 10w, thiab lwm yam. Chav tsev tseem ceeb yog lm (lumen), thiab chav nyob ntawm lub teeb ci ntawm lub zog qis yog feem ntau mcd (1cd = 1000mcd), uas yog siv luminous.
Lwm yam cuam tshuam 1cd = 1 lm / sr (lumen / stereoargon) = 1 Qhov Kev Ntsig. Nws txhais raws li: lub luminous flux tawm los ntawm lub teeb ci nyob rau hauv cov khoom lub kaum sab xis dΩ hauv cov kev taw qhia lossis lub luminous flux dΦ kis tau los ntawm qhov chaw tau txais lub teeb, qhov quotient ntawm uas yog qhov luminous siv I (hauv candela, cd). Lub hau npog sab nraud tuaj yeem ua PC PC raj, siab kub ua hauj 135 degrees. PC lub raj yog ua los ntawm LED npog, qhov kub nyob sab hauv tsev tuaj yeem ncav cuag 135 degrees, qhov kub sab nraud tuaj yeem tiv taus -45 degrees yam tsis muaj kev tawg. Nyob rau tam sim no, nws yog dav siv raws li cov xim ntsuab tshiab, ib puag ncig thiab phooj ywg txuag hluav taws xob. Teeb, taws teeb, roj thiab lwm qhov chaw.
Lub siab-zog LED thiaj li hu ua, feem ntau rau cov hluav taws xob muaj zog LED. Kuv tau xaus peb hom kev faib tawm qauv: Ib qho yog raws qhov loj qhov loj me, tuaj yeem faib ua 0.5W, 1W, 3W, 5W, 10W .... 100W. Qhov tsis sib xws txawv nyob ntawm tag nrho cov zog ntawm cov khoom lag luam pwm tom qab ntim.
Qhov thib ob tuaj yeem faib ua: loj-loj epoxy resin pob, mermaid-hom epoxy resin pob, txhuas txheej (pob MCPCB) pob, TO pob, hwj huam hom SMD pob, MCPCB integrated pob, thiab cov zoo li raws cov txheej txheem ntim sib txawv.
Qhov thib peb tuaj yeem muab faib ua cov hluav taws xob qis tsis muaj zog ntawm cov khoom hluav taws xob tsis zoo thiab cov hluav taws xob tsis muaj hluav taws xob tsis zoo siab uas muaj hluav taws xob muaj zog raws li qhov ntsuas ntawm lub teeb ua kom tsis zoo.
Tau kawg, vim lub siab pes tsawg tus ntawm cov hluav taws xob high-power LED nws tus kheej, muaj kev faib tawm txawv raws li cov qauv sib txawv.
Led high-power teeb hlaws tseem nyob rau hauv ib qho ntawm LED pob khoom, uas yog qhov tseem ceeb tshaj plaws ntawm kev lag luam teeb pom kev zoo hluav taws xob mus rau qhov chaw teeb pom kev dav dav.