Luminous kev ua tau zoo, feem ntau ntsuas hauv lumens ib watt (lm / W), yog ib qho kev ntsuas tseem ceeb rau kev soj ntsuam seb lub teeb pom kev zoo li cas hloov hluav taws xob rau hauv lub teeb pom kev. Nws cov qauv yog: Luminous Efficacy=Power Consumption (watts) Tag Nrho Luminous Flux (lumens)
Muab qhov yooj yim, qhov siab dua tus nqi no, lub zog ntau dua - ua haujlwm tau zoo thiab ci dua lub luminaire. Raws li cov qauv kev lag luam LED rau xyoo 2026, siab -kev lag luam zoo- qib LED lub teeb qhov chaw feem ntau ua tiav 150-180 lm / W, thiab cov txiaj ntsig hauv chav kuaj tau tshaj 220 lm / W.
Nov yog cov ntsiab lus tseem ceeb uas koj yuav tsum paub txog kev ua tau zoo luminous:
Cov nqi siab dua txhais tau tias cov nqi qis dua: Qhov siab dua qhov kev ua tau zoo ntawm luminous, qhov hluav taws xob tsawg yog xav tau kom ua tiav qhov ci ci tib yam, thiab cov nqi hluav taws xob qis dua yuav yog.
Nws yog ntau tshaj qhov kev faib yooj yim: Lub kaw lus luminous kev ua tau zoo ntawm lub luminaire tiav yog feem ntau tsuas yog 70% -85% ntawm cov nti LED, raws li tus neeg tsav tsheb thiab lub lens noj ib feem ntawm lub teeb tso zis.
Qhov kub thiab txias yog qhov tseem ceeb ntawm kev txwv: Txhua 10℃nce nyob rau hauv hlws ris kub yuav txo tau luminous efficiency los ntawm 3% -5%. Qhov no yog vim li cas thermal tsim yog qhov tseem ceeb heev.
Xim kub los nrog kev lag luam -tawm: Lub teeb sov sov (3000K) feem ntau muaj qhov ua kom pom tseeb qis dua lub teeb txias dawb (6500K), vim lub zog poob tshwm sim thaum hloov pauv phosphor.
Sib npaug xim rendering index: Ua raws li qhov ntsuas xim siab tshaj plaws (Ra90+) yuav txo qis kev ua tau zoo ntawm kwv yees li 15%–20%, yuav tsum muaj kev lag luam tawm - tawm raws li qhov tseeb ntawm daim ntawv thov scenarios.
Qhov cuam tshuam ntawm kev tsav tsheb tam sim no: Tsis txhob dig muag nce qhov tsav tam sim no txhawm rau txhawb qhov ci. Ntau dhau tam sim no tsis tsuas yog ua rau lub teeb pom kev tsis zoo, tab sis kuj ua rau muaj kev poob qis hauv luminous, hu ua LED droop effect.
Cov ntaub ntawv teeb tsa lub qab nthab ua haujlwm: High-zoo nyiaj-plated bracket khaubncaws sab nraud povtseg thiab siab-refractive-index silicone yog qhov tseem ceeb rau kev txhim kho cov photon extraction efficiency.
Lub cev txhais thiab Logic ntawm Luminous Efficacy
Lub cev txhais ntawm luminous efficiency yog ncaj nraim: nws yog qhov piv ntawm lumens rau watts. Yog hais tias lub teeb 10-watt emits 1000 lumens ntawm lub teeb, nws cov luminous efficiency yog 1000 ÷ 10=100 lm / W. Qhov piv no qhia tau hais tias lub teeb pom kev zoo hloov hluav taws xob mus rau lub teeb lub zog li cas.
Hauv physics, qhov theoretical siab tshaj qhov ua tau zoo yog 683 lm / W rau 100% lub zog hloov mus rau lub teeb ntsuab ntawm lub wavelength ntawm 555 nm, uas sib haum rau qhov siab tshaj plaws ntawm tib neeg lub qhov muag. Lawm, qhov no tsuas yog tus nqi theoretical xwb; hauv kev siv tswv yim, peb tsom mus rau lub teeb dawb.
120 lm/W vs . 150 lm/W: Qhov txawv yog dab tsi?
Ntau tus neeg tau nug kuv: "120 lm / W thiab 150 lm / W zoo li zoo sib xws-vim li cas thiaj li muaj qhov sib txawv ntawm tus nqi?" Qhov tseeb, qhov sib txawv ntawm 30 lm / W sawv cev rau tag nrho tiam neeg leap hauv tshuab.
Rau kev siv engineering, yog lub khw yuav tsum muaj tag nrho cov luminous flux ntawm 1,000,000 lumens:
Cov teeb pom kev zoo nrog 100 lm / W kev ua tau zoo yuav xav tau tag nrho lub zog siv ntawm 10,000 watts.
Cov teeb pom kev zoo nrog 150 lm / W kev ua tau zoo tsuas yog xav tau tag nrho lub zog siv ntawm kwv yees li 6,666 watts.
Qhov no txhais tau tias txo 33% hauv kev siv hluav taws xob! Tsis tsuas yog cov nqi hluav taws xob txo qis, tab sis cov nuj nqis rau kev txhawb nqa cov cuab yeej xws li transformers, cables, thiab cua sov-dissipating aluminium profiles kuj tseem txo qis. Rau cov chaw tsim khoom thiab cov teeb pom kev zoo uas ua haujlwm 24/7, qhov sib txawv ntawm qhov ua tau zoo ncaj qha txiav txim siab qhov rov qab los ntawm kev nqis peev (ROI) ntawm qhov project.
Kev sib piv ntawm Luminous Efficacy Benchmarks for Common Light Sources
Cov Ntsiab Lus Tseem Ceeb Txog Kev Kho Kom Zoo
Txhawm rau xam qhov tseeb lumens ib watt (lm / W) tus nqi, koj yuav tsum suav rau qhov poob hauv qab no:
Tsav Tsheb Efficiency: Fais fab tsav tsheb tsis hloov lub zog ntawm 100% efficiency. High- cov tsav tsheb zoo feem ntau ua tiav 90%–95% kev ua haujlwm, thaum qis- cov khoom zoo tsuas yog ncav cuag 80%. Qhov no ncaj qha nce tus denominator (lub zog hauv watts).
Optical Lens Poob: Lub teeb npog thiab lo ntsiab muag thaiv ib feem ntawm lub teeb tso zis. Lub teeb xa hluav taws xob feem ntau yog nruab nrab ntawm 85% -95%, uas ncaj qha txo tus lej (luminous flux hauv lumens).
Thermal Loss: Lub ci ci ntawm LED chips txawv ntawm lub xeev txias (25 degree) thiab lub xeev kub (85 degree). Feem ntau, qhov ci ntsa iab txo los ntawm kwv yees li 10% hauv lub xeev kub.
Yog li ntawd, LED nti ntsuas ntawm 160 lm / W tsuas yog muaj qhov ntsuas qhov ua tau zoo ntawm ib puag ncig 116 lm / W thaum sib sau ua ke rau hauv lub teeb ci tiav, xam raws li hauv qab no: 160 × 0.9 (Tsav) × 0.9 (Lens) × 0.9 (Thermal Loss) ≈116 lm / W
Kev nkag siab txog qhov kev hloov pauv no yuav pab piav qhia vim li cas qee cov tuam txhab ua tiav luminaire tsis kam lees daim ntawv ntsuas qhov tseeb.
Phosphor Conversion Efficiency: Khawv koob ntawm Lub Teeb Xim
Feem ntau cov LEDs dawb siv xiav LED chips kom zoo siab daj phosphors. Cov txheej txheem no hu ua photoluminescence.
Formula yog qhov tseem ceeb: Qhov piv ntawm aluminate phosphors rau nitride phosphors ncaj qha cuam tshuam rau luminous efficiency.
Kev Hloov Poob: Lub teeb xiav muaj lub wavelength luv luv thiab lub zog siab, thaum lub teeb daj muaj qhov ntev wavelength thiab qis zog. Cov txheej txheem hloov dua siab tshiab ntawm lub cev no yog inevitably nrog lub zog poob, hu ua Stokes hloov.
Technological Breakthrough: Peb cov chips tam sim no tau txais kev ua haujlwm siab -kub los tiv thaiv- txheej txheem, uas ua kom cov khoom sib txawv ntawm cov phosphor hais, txo lub nraub qaum - thiab - rov qab xav txog thiab nqus ntawm lub teeb sab hauv, thiab yog li ua kom cov lumen tso zis ntau ntxiv.
Ntau tus neeg saib xyuas lub luag haujlwm ntawm cov nplaum thiab cov hlua khi.
Siab -Refractive-Index Silicone: LED chips muaj qhov ntsuas siab refractive, thaum huab cua muaj qhov qis. Lub teeb ncaj qha tawm ntawm lub nti yuav rov qab tag nrho. High-refractive-index silicone ua zoo li tus choj, coj lub teeb tawm kom zoo.
Nyiaj -Plated Txheej: Lub ci dua thiab ntau dua oxidation- tiv taus cov nyiaj-plated txheej ntawm lub bracket, qhov siab dua nws qhov kev xav. Ntawm Hengcai Electronics, peb ua raws li kev siv cov khoom siv siab -precision automatic ntau lawm los xyuas kom meej cov nyiaj-plated txheej thickness ntawm txhua txhua 5050 los yog 3535 LED nti bracket ua tau raws li cov qauv, tiv thaiv sulfidation thiab blackening, thiab tuav ntev - ntev luminous efficiency.
Vim li cas ho tsis siab dua Wattage sib npaug siab dua Lumens?
Qhov no yog ib qho classic heev thiab tsis to taub tsis tu ncua. Ntau tus tsis yog- cov kws tshaj lij nug ua ntej thaum yuav lub teeb: "Lub teeb ntawm lub teeb no yog dab tsi?" zoo li yog tias siab dua wattage txhais tau tias lub teeb ci dua. Qhov tseeb, wattage tsuas yog qhia ntau npaum li cas "khoom noj" nws siv (lub zog noj), tsis yog "ua haujlwm" ntau npaum li cas (lub teeb tso zis).
Lub Invisible Killer ntawm Luminous Efficacy
Thaum koj nce lub zog (wattage) ntawm LED, yog tias cov cua sov tsis tuaj yeem khaws cia, qhov sib txuas kub yuav nce sai. LED chips yog semiconductors uas tsis tshua muaj siab rau cua sov.
Raws li qhov kub thiab txias, lattice vibrations intensify, txo qhov tshwm sim ntawm electrons thiab qhov recombining los tsim photons.Qhov no hu ua thermal quenching.
Qhov tshwm sim yog: koj muab hluav taws xob ntau dua, tab sis qhov ci ntsa iab tsuas yog nce ntxiv -hloov, qhov ua tau zoo ntawm luminous (lumens ib watt) poob qis heev.
Qhov "Droop" Phenomenon ntawm Luminous Efficacy
Hauv semiconductor physics, muaj qhov zoo -paub Efficiency Droop nkhaus. Thaum tsav tsheb tam sim no ceev nce mus rau ib theem, lub internal quantum efficiency yuav txo irreversibly. Qhov no yog ib qho piv txwv rau tus neeg uas tuaj yeem khiav mus ntev (kev ua haujlwm siab), tab sis yog tias koj hais kom nws khiav 100 meters (siab tam sim no, siab wattage), nws yuav sai sai tau tag nrho (tsawg efficiency).
Yog li ntawd, zoo heev LED tsim feem ntau txais yuav "tsawg tam sim no ceev" tsav tsheb. Piv txwv li, peb cov SMD2835 series ua tiav qhov zoo tshaj plaws lumens -ib -watt piv thaum ua haujlwm ntawm qhov ntsuas tam sim no.
Qhov txawv ntawm cov ntim ntim
Ntau hom ntim sib txawv nyob rau hauv lawv lub peev xwm los lis wattage thiab luminous efficiency:
SMD 2835: Featuring ib cheeb tsam loj tshav kub dissipation, nws yog haum rau tsawg mus rau nruab nrab cov ntaub ntawv siv fais fab. Nws boasts tsis tshua muaj siab luminous efficiency thiab sawv tawm raws li tus huab tais ntawm tus nqi -kev ua tau zoo.
EMC3030: Txais EMC cov ntaub ntawv thermosetting, nws muaj qhov kub thiab txias tiv thaiv UV. Zoo tagnrho rau siab - lub zog tsav tsheb, nws tseem tuaj yeem khaws cov lumen zoo heev ntawm cov wattages siab.
Ceramic Series (1-5W): Nrog superior thermal conductivity, nws yog tsim tshwj xeeb los daws qhov teeb meem thermal quenching nyob rau hauv siab wattage tej yam kev mob.
Stokes Hloov: Tus nqi ntawm lub teeb sov
Koj tuaj yeem pom tias rau cov chips LED ntawm tib qhov kev qhia tshwj xeeb, 6500K (lub teeb txias txias) ib txwm muaj cov lumen tso zis ntau dua 3000K (sov dawb lub teeb). Qhov no yog vim qhov tsim lub teeb sov xav tau ntau cov xim liab spectral. Kev ua haujlwm zoo ntawm cov phosphors liab feem ntau qis dua li cov phosphors daj, thiab lub zog poob (Stokes hloov) yog ntau dua thaum hloov siab - lub teeb xiav lub zog rau qis - lub zog liab.
Txias Dawb Teeb: Tsawg dua phosphor hloov dua siab tshiab, ntau lub teeb xiav khaws cia, thiab ntau dua luminous efficiency.
Lub teeb sov dawb: Thicker phosphor txheej, ntau cov txheej txheem hloov dua siab tshiab, uas ua rau muaj qhov ua tau zoo ntawm luminous.
