Yuav kom nkag siab txog LED teeb pom kev zoo, koj yuav tsum nkag siab txog LED xim kub. Yog li ntawd, txhua tus tsim khoom siv LED yuav tsum xub hu rau cov kev paub txog LED xim kub. Qhov tseem ceeb ntawm LED xim kub yog txaus los cuam tshuam cov khoom muag. Tsuas yog xim kub uas ua tau raws li tus qauv tuaj yeem tsim kom muaj lub teeb pom kev zoo. Kab lus no qhia txog cov kev paub yooj yim ntawm LED xim kub thiab xim rendering Performance index.
Rau cov khoom siv teeb pom kev zoo xws li lub teeb dawb LEDs uas nws cov xim luminous yog qhov pib" lub teeb dawb", cov kev tswj xyuas tuaj yeem qhia meej xim ntawm lub teeb ci. Tab sis tus nqi tshwj xeeb yog qhov nyuaj rau kev koom tes nrog kev xav ntawm lub teeb thiab xim. Cov neeg feem ntau hu lub teeb xim uas ntau txiv kab ntxwv-liab li" sov xim", thiab cov xim sib zog uas ntau blazingly dawb los yog xiav me ntsis hu ua" txias xim" . Yog li ntawd, nws yog ntau intuitive siv xim kub los qhia lub teeb xim ntawm lub teeb qhov chaw.
Thaum cov xim luminous ntawm lub teeb ci yog tib yam li cov xim hluav taws xob los ntawm lub cev dub ntawm qhov kub thiab txias, qhov kub ntawm lub cev dub hu ua xim kub ntawm lub teeb ci (xim kub) T, thiab chav tsev yog K (K). Rau lub teeb dawb LEDs, nws cov xim luminous feem ntau tsis zoo ib yam li chromaticity coordinates ntawm lub cev dub (ua tiav radiator) ntawm ntau qhov kub, yog li nws tsis tuaj yeem qhia los ntawm cov xim kub ntawm lub sijhawm no. Txhawm rau pab txhawb kev sib piv, lub tswv yim ntawm kev sib raug zoo xim kub (CCT) tau txais yuav. Ntawd yog, thaum chromaticity ntawm lub teeb qhov chaw ze tshaj rau chromaticity ntawm tag nrho cov radiator ntawm ib tug tej yam kub, uas yog, thaum lub chromaticity txawv ntawm 1960CIE-UCS chromaticity daim duab yog qhov tsawg tshaj plaws, ces qhov kub thiab txias ntawm tag nrho cov radiator yog. hu ua chromaticity ntawm lub teeb qhov chaw Correlated xim kub R1.
LEDs siv hauv cov phiaj xwm teeb pom kev zoo, tshwj xeeb tshaj yog cov LEDs dawb, ntxiv rau kev qhia cov xim, cov yam ntxwv tseem ceeb yog feem ntau cov xim ntawm cov khoom nyob ib puag ncig hauv qab LED teeb thiab cov xim ntawm cov khoom nyob rau hauv tag nrho cov hluav taws xob (xws li hnub ci). Consistency, thiaj li hu ua xim rendering yam ntxwv.
Xyoo 1974, CIE pom zoo rau" kuaj xim" txoj kev los ntsuas qhov ntau thiab tsawg ntawm cov xim rendering ntawm lub teeb ci. Nws ntsuas tag nrho cov xim hloov ntawm tus qauv qauv nyob rau hauv lub illumination ntawm qhov siv lub teeb qhov chaw thiab nyob rau hauv lub illumination ntawm lub teeb qhov chaw yuav tsum tau ntsuas los qhia kom meej cov zaub ntawm lub teeb qhov chaw yuav tsum tau ntsuas. Xim, qhia los ntawm xim rendering index tus nqi. CIE qhia tias lub tshuab hluav taws xob ua tiav lossis tus qauv illuminator D yog siv los ua lub teeb pom kev zoo, thiab nws cov xim rendering Performance index yog teem rau 100. Nws kuj tau teev ntau cov qauv xim rau kev kuaj.
Raws li cov xim sib txawv tsim los ntawm cov qauv xim qauv nyob rau hauv cov ntaub ntawv siv lub teeb thiab lub teeb qhov chaw yuav tsum tau ntsuas, cov xim rendering ntawm lub teeb qhov chaw yuav tsum tau ntsuas. Cov xim rendering Performance index ntawm lub teeb ci rau ib qho qauv xim qauv hu ua qhov tshwj xeeb xim rendering Performance index R1.
R1=100-4.6△ Ei (2-3)
Nyob rau hauv cov mis, △Ei yog cov xim sib txawv ntawm i-th qauv xim qauv nyob rau hauv qhov siv lub teeb qhov chaw thiab lub teeb qhov chaw yuav tsum tau ntsuas. Qhov nruab nrab xim rendering Performance index ntawm lub teeb qhov chaw rau thawj 8 xim qauv yog hu ua lub general xim rendering Performance index Ra.
Muaj 14 tus qauv xim qauv pom zoo los ntawm CIE. No. 1-8 feem ntau yog siv cov qauv duab ntxoov ntxoo nrog nruab nrab saturation thiab nruab nrab brightness. No. 9-14 cov qauv muaj xws li ob peb xim saturated xws li liab, daj, ntsuab, thiab xiav, European thiab American tawv xim, thiab nplooj ntsuab. Xyoo 1985, lub teb chaws tsim lub" Lub Teeb Xim Xim Rendering Kev Ntsuam Xyuas Txoj Kev" tus qauv, thiab ntxiv cov qauv xim ntawm Suav poj niam cov tawv nqaij xim raws li tus qauv kaum tsib xim qauv.
Paub txog cov xim rendering indexes tiag tiag muaj kev hloov maj mam rau cov khoom siv teeb pom kev zoo, vim tias qee lub sijhawm tshwj xeeb, xws li studios, khw malls, qhov chaw zoo nkauj, thiab lwm yam, lub teeb sib txawv yuav ua rau cov tawv nqaij muaj kev cuam tshuam ntau lub xeev, yog li cuam tshuam rau cov neeg siv khoom' Qhov kawg tshwm sim ntawm kev yuav khoom lossis kev tua.
