Rau qhov ntsuas tseem ceeb ntawm LED teeb qhov kev ua tau zoo thiab lawv txoj kev sib raug zoo
Txhawm rau txiav txim siab seb lub teeb ci LED yog qhov peb xav tau, peb feem ntau siv qhov sib xyaw ua ke rau kev sim, thiab tom qab ntawd txheeb xyuas nws raws li cov ntaub ntawv xeem. Kev sib koom ua ke dav dav tuaj yeem muab rau 6 qhov tseem ceeb hauv qab no: luminous flux, luminous efficiency, voltage, xim coordinates, xim kub thiab xim rendering Performance index (Ra). (Qhov tseeb, muaj ntau lwm yam tsis xws li: ncov wavelength, dominant wavelength, tsaus nti tam sim no, CRI, thiab lwm yam.) Hnub no peb yuav tham txog lub ntsiab lus ntawm 6 qhov tsis zoo rau lub teeb ci thiab lawv lub zog rau ib leeg.
Luminous flux: Luminous flux hais txog lub zog hluav taws xob uas tib neeg lub qhov muag tuaj yeem hnov, uas yog, tag nrho lub zog hluav taws xob tawm los ntawm LED, hauv lumens (lm). Luminous flux yog ib qho kev ntsuas ncaj qha thiab qhov kev xav tau ntawm lub cev feem ntau rau kev txiav txim siab qhov ci ntawm LEDs.
Voltage: Voltage yog qhov sib txawv ntawm qhov zoo thiab qhov tsis zoo ntawm LED teeb hlaws, uas yog qhov ntsuas ncaj qha, chav tsev: Volt (V). Nws muaj feem xyuam rau qhov voltage ntawm lub nti siv los ntawm LED.
Luminous efficiency: Luminous efficiency, uas yog, qhov piv ntawm tag nrho cov luminous flux emitted los ntawm lub teeb qhov chaw rau tag nrho cov input zog, yog tus nqi ntawm xam, unit: lm / W. Rau LEDs, lub zog hluav taws xob input feem ntau yog siv rau lub teeb emission thiab hluav taws xob tiam, thiab lub teeb pom kev zoo txhais tau hais tias muaj ob peb yam siv rau kev tsim hluav taws xob, uas kuj yog ib qho kev tshwm sim ntawm cov cua kub zoo.
Nws tsis yog qhov nyuaj kom pom kev sib raug zoo los ntawm lub ntsiab lus ntawm peb qhov saum toj no. Thaum qhov tam sim no tau txiav txim siab, lub luminous efficiency ntawm LED yog tiag tiag txiav txim los ntawm lub luminous flux thiab voltage. Qhov siab dua qhov luminous flux thiab qis dua qhov voltage, qhov siab dua qhov luminous efficiency. Raws li qhov tam sim no loj-scale siv xiav lub teeb chips coated nrog daj-ntsuab fluorescent teeb muaj kev txhawj xeeb, vim hais tias qhov dav dav ntawm ib qho tseem ceeb ntawm xiav lub teeb chips yog hais txog 3V, uas yog tus nqi ruaj khov, kev txhim kho lub teeb. efficiency yog ua tiav los ntawm kev nce lub luminous flux.
Xim Coordinates: Cov kev sib koom ua ke ntawm cov xim, uas yog, xim txoj hauj lwm hauv daim duab chromaticity, yog kev ntsuas. Hauv kev siv CIE1931 tus qauv colorimetric system, cov kev tswj xyuas tau sawv cev los ntawm ob qhov txiaj ntsig ntawm x thiab y. Tus nqi x tuaj yeem xav txog raws li qib ntawm lub teeb liab hauv spectrum, thiab tus nqi y raws li qib ntawm lub teeb ntsuab.
Xim kub: lub cev kom muaj nuj nqis uas ntsuas cov xim ntawm lub teeb. Thaum cov hluav taws xob ntawm lub cev dub tiag tiag yog tib yam li cov hluav taws xob ntawm lub teeb ci hauv qhov pom, qhov kub ntawm lub cev dub nyob rau lub sijhawm no yog hu ua xim kub ntawm lub teeb ci. Xim kub yog qhov ntsuas, tab sis tib lub sijhawm nws tuaj yeem suav los ntawm cov xim sib koom ua ke.
Xim rendering Performance index (Ra): Nws yog siv los piav txog lub peev xwm ntawm lub teeb qhov chaw los kho cov xim ntawm cov khoom, uas yog txiav txim los ntawm kev sib piv cov tsos xim ntawm cov khoom nyob rau hauv lub teeb qhov chaw. Peb cov xim rendering Performance index yog xam los ntawm kev sib koom ua ke rau yim lub teeb xim ntsuas ntawm lub teeb grey-liab, tsaus grey-daj, saturated daj-ntsuab, nruab nrab daj-ntsuab, lub teeb xiav-ntsuab, lub teeb xiav, lub teeb-ntsuab xiav , thiab lub teeb liab-liab ntshav nruab nrab ntawm. Nws tuaj yeem pom tias nws tsis suav nrog saturated liab, uas feem ntau hu ua R9, thiab vim tias qee qhov teeb pom kev xav tau ntau lub teeb liab (xws li cov teeb pom kev zoo nqaij), R9 feem ntau siv los ua qhov tseem ceeb rau kev ntsuas LEDs.
Cov xim kub tuaj yeem suav tau los ntawm cov xim sib koom ua ke, tab sis yog tias koj saib ze ntawm daim duab chromaticity, koj yuav pom tias tib xim kub tuaj yeem sib haum rau ntau khub ntawm cov xim sib koom ua ke, thaum ib khub xim sib koom tsuas yog sib haum rau ib qho xim kub. Yog li ntawd, nws yog qhov zoo dua los siv cov xim sib koom tes los piav txog cov xim ntawm lub teeb ci. kom meej. Cov zaub Performance index nws tus kheej tsis muaj dab tsi ua nrog cov xim sib koom ua ke thiab xim kub, tab sis thaum cov xim kub siab dua thiab lub teeb xim txias dua, cov xim liab nyob rau hauv lub teeb ci yog tsawg, thiab nws nyuaj rau ua tiav CRI siab. Rau qhov chaw sov so nrog cov xim kub tsis tshua muaj xim, lub teeb liab Nrog ntau cov khoom, qhov dav spectrum npog, ze rau lub spectrum ntawm lub teeb ntuj, cov xim rendering Performance index tuaj yeem siab dua. Qhov no kuj yog vim li cas vim li cas LEDs siab dua 95Ra ntawm lub khw muaj xim kub.
