Yuav txiav txim seb ibLED teebqhov chaw yog qhov peb xav tau, peb feem ntau siv ib qho kev sib koom ua ke rau kev sim, thiab tom qab ntawd txheeb xyuas 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 tswj, xim kub thiab xim rendering Performance index (RA). (qhov tseeb, muaj ntau yam tsis zoo, xws li ncov wavelength, lub ntsiab wavelength, tsaus nti tam sim no, CRI, thiab lwm yam.) hnub no peb yuav tham txog qhov tseem ceeb ntawm rau qhov tsis zoo rau lub teeb ci thiab lawv cov kev sib raug zoo.

Luminous flux: luminous flux yog hais txog lub zog hluav taws xob uas tuaj yeem hnov ​​​​los ntawm tib neeg lub qhov muag, uas yog, tag nrho cov hluav taws xob hluav taws xob tawm los ntawm LED, chav tsev: lumen (LM). Luminous flux yog qhov ntsuas ncaj qha kom muaj nuj nqis thiab qhov muaj txiaj ntsig zoo tshaj plaws ntawm lub cev los txiav txim siabbrightness ntawm LED.

Voltage: voltage yog qhov sib txawv ntawm qhov zoo thiab tsis zoo electrodes ntawmLED teeb hlaws dai, uas yog kev ntsuas ncaj qha, chav tsev: volts (V). Uas muaj feem xyuam rau qib voltage ntawm cov nti siv los ntawm LED.

Luminous efficiency: luminous efficiency, piv txwv li tus piv ntawm tag nrho cov luminous flux emitted los ntawm lub teeb qhov chaw mus rau tag nrho cov hwj chim input, yog xam kom muaj nuj nqis, unit: LM / W. Rau LEDs, lub input zog yog tsuas yog siv rau lub teeb emission thiab tshav kub. tiam. Yog hais tias lub teeb efficiency siab, nws txhais tau hais tias muaj ob peb qhov chaw siv rau thaum tshav kub kub tiam, uas kuj yog ib tug manifestation ntawm zoo tshav kub dissipation.

Nws tsis yog nyuaj rau pom kev sib raug zoo ntawm peb lub ntsiab lus saum toj no. Thaum siv tam sim no tau txiav txim siab, lub teeb ua haujlwm ntawm LED tau txiav txim siab los ntawm qhov luminous flux thiab voltage. Yog hais tias lub luminous flux yog siab thiab voltage yog tsawg, lub teeb efficiency yog siab. Raws li rau tam sim no loj-scale xiav nti coated nrog daj ntsuab fluorescence, txij li thaum ib tug tseem ceeb voltage ntawm xiav nti yog feem ntau nyob ib ncig ntawm 3V, uas yog ib tug kuj ruaj khov tus nqi, kev txhim kho lub teeb efficiency mas yog nyob ntawm kev txhim kho ntawm luminous flux.

Xim ua haujlwm: qhov sib koom ua ke ntawm xim, uas yog, txoj haujlwm ntawm cov xim hauv daim duab chromaticity, uas yog qhov ntsuas qhov ntau. Hauv kev siv CIE1931 tus qauv colorimetric system, cov kev tswj xyuas tau sawv cev los ntawm X thiab Y qhov tseem ceeb. Tus nqi x tuaj yeem suav tias yog qib ntawm lub teeb liab nyob rau hauv spectrum, thiab tus nqi y yog xam 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 tsis muaj tseeb thiab cov hluav taws xob ntawm lub teeb pom kev hauv cheeb tsam pom zoo ib yam, qhov kub ntawm lub cev dub hu ua xim kub ntawm lub teeb ci. Xim kub yog qhov ntsuas kom muaj nuj nqis, tab sis 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. Nws yog txiav txim los ntawm kev sib piv cov tsos xim ntawm cov khoom nyob rau hauv tus qauv teeb qhov chaw. Peb cov xim rendering Performance index yog qhov nruab nrab tus nqi 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 xiav xiav thiab lub teeb liab ntshav liab. Nws tuaj yeem pom tias nws tsis suav nrog saturated liab, uas yog, R9. Txij li qee qhov teeb pom kev zoo xav tau ntau lub teeb liab (xws li 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 thaum koj ua tib zoo saib daim ntawv 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 tseeb dua los siv cov xim sib koom tes los piav txog cov xim ntawm lub teeb ci. Cov zaub Performance index nws tus kheej tsis muaj dab tsi ua nrog cov xim sib koom tes thiab xim kub. Txawm li cas los xij, thaum cov xim kub siab dua thiab lub teeb xim yog txias dua, cov xim liab nyob rau hauv lub teeb qhov chaw yog tsawg, thiab cov zaub Performance index yog nyuaj heev. Rau qhov sov sov qhov chaw uas tsis muaj xim kub, cov xim liab yog ntau dua, cov spectrum coverage yog dav, thiab lub spectrum ze rau lub ntuj lub teeb, xim index yuav ib txwm siab dua. Qhov no kuj yog vim li cas vim li cas LEDs saum toj no 95ra ntawm kev ua lag luam muaj xim kub.