Cov TV zoo tshaj plaws yog muab raws li qhov xav tau teeb pom kev zoo, kev xav tau ntawm cov neeg tuaj saib, thiab cov neeg tuaj saib. Nws yog ib qho tseem ceeb kom teeb lub tshav pob ua ntej qhov kev ua si. Cov kua dej ntim dab tsi? Kab lus no yuav muab cov lus qhia txog yuav ua li cas LED chaw ntau pob dej nyab teeb ntsuas hauv lumens?
Cov piv txwv hauv qab no yuav raug siv los qhia meej lub tswv yim hauv kab lus no:
1. Lub lumen yog dab tsi?
2, Koj ua li cas thiaj paub tias muaj pes tsawg lub lumens LED chaw ntau pob teeb muaj?
Yuav ua li cas txiav txim siab LED chaw ntau pob teeb 'luminous tso zis
Lub chaw ntau pob lub teeb lumen yog dab tsi, hauv Tshooj 1?
Lub ntsiab lus ntawm lumens hauv A
Lo lus "lumens" yog hais txog lub kaum sab xis ntawm lub teeb taws, uas yog sib npaug rau ib square meter ntawm ib tug kheej kheej nrog ib lub vojvoog ntawm ib meter (cd, Candela Candela, luminous siv chav tsev).
Tag nrho cov luminous flux tawm mus rau hauv lub kaum sab xis los ntawm lub teeb ci yog ib lumen (1 cd 1 sr=1 lm) yog tias lub teeb ci tawm ib lub teeb ci sib npaug ntawm lub kaum sab xis. Raws li lwm txoj hauv kev, ib qho isotropic ib-Kandel lub teeb ci tsim ib qho zoo tib yam 4 lumens ntawm tag nrho cov luminous flux. Lub kaw lus yuav emit tsuas yog 2 lumens thaum lub teeb qhov chaw yog ib feem los ntawm ib tug zoo meej absorbing hemisphere, uas tsuas yog ib nrab ntawm cov luminous flux. Nyob rau hauv cov lus qhia uas tsis yog qhov muag plooj, lub luminance tseem yog 1 candela.
Lumens tej zaum yuav xav tias tsis raws cai raws li kev ntsuas ntawm tag nrho qhov muaj nuj nqis ntawm lub teeb pom kev tawm los ntawm lub teeb ci, lossis hauv ib lub teeb lossis lub kaum ntse ntse. Lub spectrum ntawm lub teeb pom kev zoo, raws li tau hais hauv qhov kev ua haujlwm photometric los ntawm cov lus teb nominal ntawm tib neeg lub qhov muag, cuam tshuam ntau npaum li cas candelas, lossis lumens, los ntawm qhov chaw ntawd.
Yuav ua li cas txiav txim siab LED chaw ntau pob teeb 'luminous tso zis
B.Dab tsi distinguishes lumens ntawm lux?
Lumens thiab lux yog txawv nyob rau hauv uas lux xam qhov chaw nyob rau hauv uas lub teeb flux faib. Ib square meter ntawm qhov chaw tau txais qhov flux ntawm 1000 lumens tsom rau nws, ua 1000 lux ntawm lub teeb. Lub ci ci tsuas yog 100 lux thaum tib lub 1000 lumens tau tawg thoob plaws thaj tsam ntawm 10 square meters. Raws li kev ua lej, 1lx=1lm/m2.
Lub teeb ci nrog lub zog ntawm 1 watt, luminous flux ntawm 683 lumens, thiab xim uas zoo tshaj plaws rau tib neeg lub qhov muag (wavelength ntawm 555 nanometers, nyob rau hauv cheeb tsam ntsuab ntawm spectrum). Raws li kev faib tawm spectral, ib lumen sib haum rau tsawg kawg 1/683 watt ntawm pom lub teeb pom kev.
Nqe Lus Nug 2: LED chaw ntau pob teeb 'Lumens suav li cas?
Cov units ntawm luminous flux yog lumens. F sawv cev rau tag nrho cov teeb pom kev zoo uas lub teeb tau tsim. Lumens (Lm) yog chav tsev. Cov ntsiab lus teeb pom kev zoo muaj qhov luminosity ntawm 1 canopy, thiab "1 lumen" yog tus nqi ntawm lub teeb nws tawm ntawm lub kaum sab xis (1 steradian).
Txij li thaum MECREE LED teeb muaj qhov ua tau zoo ntawm 150 lm / W, lub chaw ua si lub teeb lub lumen tso tawm yuav yog 1000W x 150 lm / W, lossis 150,000 lumens.
