Xim kub
Thaum tus txheej txheem blackbody yog rhuab (xws li tungsten xaim nyob rau hauv ib lub teeb incandescent), xim ntawm lub blackbody pib hloov maj mam raws li tsaus liab - lub teeb liab - txiv kab ntxwv - daj - dawb - xiav thaum kub nce. Thaum cov xim ntawm lub teeb tawm los ntawm lub teeb pom kev zoo ib yam li tus qauv blackbody ntawm qhov kub thiab txias, peb hu rau qhov kub thiab txias ntawm lub cev dub nyob rau lub sijhawm ntawd raws li cov xim kub ntawm lub teeb ci, sawv cev los ntawm qhov kub thiab txias. : K.
(Kev nkag siab zoo ntawm cov xim kub) Table 1
| xim kub | lub teeb xim | huab cua cuam tshuam |
| ≥5000K | txias (xiav dawb) | txias thiab deserted xav |
| 3300K-5000K | nruab nrab (ze rau natural light) | tsis pom kev pom kev puas siab puas ntsws |
| 3300 K | sov (dawb nrog txiv kab ntxwv paj) | sov thiab qab zib |
(Xim qhov ntsuas kub pom) Table II
| xim kub | kev xaav | lub teeb xim | kev xav | teeb pom kev zoo |
| 2000-3000K | 0.5 teev tom qab hnub tuaj | Golden daj-dawb nrog liab | sov | meej meej |
| 3000K-4500K | 2 teev tom qab hnub tuaj | dawb nrog daj | sov nyob nruab nrab | ntuj |
| 4500K-5600K | 4 teev tom qab hnub tuaj | dawb | nruab nrab | xis nyob |
| > 5600K | overcast | dawb nrog xiav | txias hauv nruab nrab | ci ntsa iab |
Xim coordinates
Lub coordinates ntawm lub blackbody khiav yog hu ua xim kub, thiab muaj meej coordinates; cov kev tswj xyuas sab nraud ntawm lub cev dub (ze rau ntawm lub cev dub) yog hu uakev sib raug zooxim kub, kuj hu ua xim kub. Piv txwv li, rau xim kub ntawm6250k uax = 0.3176 y = 0.3275. Kub, los ntawm qis mus rau siab, tag nrho cov xim kub cov ntsiab lus tsim ib txoj kab (khoov), uas yog hu ua "blackbody xim kub trajectory".
Txawm li cas los xij, cov xim kub feem ntau raug xa mus rau tam sim no yog qhov "correlated xim kub" (CCT); "xim kub" kuj yog siv rau qhov taw tes (kev sib koom tes) uas tsis nyob ntawm txoj kev tab sis tsis nyob deb, thiab nws cov xim kub tus nqi yog tus nqi ntawm qhov chaw ze tshaj plaws ntawm kev khiav. Nyob rau hauv txoj kev no, rau tib xim kub, muaj ntau lub ntsiab lus
sab nraum txoj kab, thiab cov kab txuas ntawm cov ntsiab lus no hu ua "isotherms"; Ntawd yog, txhua qhov kev sib koom ua ke ntawm kab no muaj tib xim kub. Muab ib daim duab. Cov duab hauv daim duab qhia "isotherm", qhov nkhaus yog "blackbody trajectory", thiab lub ellipse yog qhov sib koom ua ke ntawm6500k iblub xeev tau teev tseg.
Cov lus hauv qab no kom paub meej
Chromaticity coordinate yog lub coordinates ntawm cov xim. Tam sim no feem ntau siv cov xim sib koom ua ke, kab rov tav axis yog x, thiab ntsug axis yog y. Nrog chromaticity coordinates, tus taw tes tuaj yeem txiav txim siab ntawm chromaticity coordinate. Cov ntsiab lus no qhia meej meej cov xim luminous. Ntawd yog, chromaticity ua haujlwm kom raug sawv cev rau xim. Vim hais tias cov chromaticity coordinate muaj ob tug lej thiab tsis yog intuitive, tib neeg nyiam siv cov xim kub kom roughly qhia cov xim luminous ntawm lub teeb pom kev zoo. Qhov tseeb, xim kub yog xam los ntawm kev sib koom ua ke ntawm chromaticity, thiab xim kub tsis tuaj yeem tau txais yam tsis muaj chromaticity coordinate. Yog tias nws muaj xim tsaus heev, xws li ntsuab, xiav, thiab lwm yam, koj tuaj yeem xam qhov "lub ntsiab wavelength" thiab "xim purity" los ntawm kev sib koom ua ke ntawm chromaticity kom pom cov xim. Rau lub teeb txuag hluav taws xob, lub xeev tau teev cov kev cai chromaticity hauv qab no, thiab tus nqi sib txawv yog tsawg dua 5SDCM.
Tus lej Lub Npe Cim X Y Xim kub Ra
F6500 hnub ci xim RR .313 .337 6430 80
F5000 nruab nrab dawb RZ .346 .359 5000 80
F4000 txias dawb RL .380 .380 4040 80
F3500 dawb RB .409 .394 3450 80
F3000 sov dawb RN .440 .403 2940 82
F2700 incandescent xim RD .463 .420 2720 82
Cov ntawv txuas nrog thiab cov qauv hnub qub zog
Ntawm peb cov xim thawj, tsuas yog liab muaj xim kub txog li 900K, thaum lwm yam xim tsis muaj lub tswv yim ntawm xim kub. Piv txwv li: hlau yuav tsis tig ntsuab los yog xiav txawm tias nws yog cua sov li cas. Xim kub yog siv los sawv cev cov xim ntawm lub teeb pom kev zoo (ze dawb). Tsawg xim kub, dawb nrog daj, hu ua sov tone; Cov xim kub kub, dawb nrog xiav, hu ua lub suab txias. Lub teeb ntsuab tsis tuaj yeem qhia los ntawm qhov kub thiab txias; Lub teeb xiav kuj tsis muaj xim kub.
Peb tuaj yeem pom tias qhov sib txawv ntawm chromaticity kev sib koom ua ke ntawm ob qho kawg ntawm isotherm yog qhov pom tseeb, uas yog, qhov sib txheeb xim kub yog tib yam (piv txwv li ntawm isotherm), tab sis cov xim sib txawv ntawm nws lub teeb kuj tuaj yeem pom los ntawm tib neeg lub qhov muag. . Thaum muaj qee qhov sib txawv ntawm qhov sib txheeb xim kub, xim sib txawv yuav tshwm sim. Feem ntau, LED cov tuam txhab faib lawv cov LED sib cuam tshuam xim kub raws li qhov yuav tsum tau muaj ntawm cov qauv sib xws. Tsis muaj teeb meem nyob rau hauv daim ntawv thov ntawm qhov chaw teeb pom kev zoo, tab sis nyob rau hauv daim ntawv thov lub sij hawm nrog nruj xim sib txawv yuav tsum tau, LED cov khoom uas zoo xim coordinates yuav tsum tau xaiv rau ntau lawm.
Cov hauv qab no yog qhov siv los ntawm Energy Star:
Cov ntaub ntawv ntawm qee cov tuam ntxhab:
(Qee duab los ntawm Is Taws Nem. Yog tias muaj kev ua txhaum cai, thov hu rau peb thiab tshem tawm tam sim ntawd)
Post lub sij hawm: Dec-08-2022