Siab -Kev tsis sib xwsLED Vaj Huam Sib Luag Teeb: Key Optical Designs & Performance Optimization Guide
Nyob rau hauv cov niaj hnub teeb pom kev zoo toj roob hauv pes, LED vaj huam sib luag teeb tau dhau los ua qhov kev xaiv zoo tshaj plaws rau thaj chaw, chaw ua lag luam, thiab chaw ua haujlwm vim nws qhov profile zoo nkauj, lub zog ua haujlwm, thiab muag muag, teeb pom kev zoo. Raws li lub tiaj tus- vaj huam sib luag teeb pom kev zoo, LED vaj huam sib luag lub teeb tshem tawm cov teeb pom kev hnyav thiab cov duab ntxoov ntxoo, tsim kom muaj lub teeb pom kev zoo ib puag ncig uas txhim kho cov khoom tsim tau thiab zoo- nyob. Txawm li cas los xij, ua tiav qhov teeb pom kev zoo sib xws -ib qho kev ntsuas kev ua tau zoo tshaj plaws rau ib qhoLED vaj huam sib luag teeb- tseem yog ib qho kev sib tw, tshwj xeeb tshaj yog rau cov loj - loj panels thiab tsis yog - teeb - coj phaj qauv. Kab lus no tshawb txog cov qauv tsim kho qhov muag, cov qauv ntsuas kev ua tau zoo, thiab cov tswv yim daws teeb meem rauLED vaj huam sib luag teeb, tsom mus rau yuav ua li cas freeform lo ntsiab muag thiab microstructures txhim kho uniformity thaum tuav lub zog efficiency. Kev txhawb nqa los ntawm cov ntaub ntawv pov thawj kev tshawb fawb thiab kev sim cov ntaub ntawv, nws muab kev pom zoo rau cov tsim teeb pom kev zoo, cov kws tsim vaj tsev, thiab cov kws tshaj lij kev muag khoom.
Vim li cas Uniformity yog Core Performance Metric rauLED Vaj Huam Sib Luag Teeb?
Uniformity yog hais txog qhov sib xws ntawm qhov pom kev thoob plaws tag nrho lub teeb -emitting nto ntawm lub teeb vaj huam sib luag LED. Nws yog xam raws li qhov piv ntawm qhov tsawg kawg nkaus illuminance (Emin) mus rau qhov nruab nrab illuminance (Eaverage) ntawm lub hom phiaj nto, qhia raws li ib feem pua. Rau lub teeb vaj huam sib luag LED, qhov sib xws siab (feem ntau Ntau dua lossis sib npaug li 85%) yog qhov tseem ceeb rau ob qho tib si ua haujlwm thiab zoo nkauj. Hauv chaw ua haujlwm, teeb pom kev tsis sib xws tuaj yeem ua rau qhov muag tsis pom kev thiab qaug zog, txo qis kev ua haujlwm txog li 20%, raws li kev tshawb fawb los ntawm International Commission on Illumination (CIE). Hauv cov khw muag khoom ib puag ncig, qhov teeb pom kev tsis sib haum tuaj yeem cuam tshuam cov khoom xim thiab textures, cuam tshuam rau cov neeg siv khoom txiav txim siab. Rau kev siv hauv vaj tse, teeb pom kev zoo sib xws tsim kom muaj kev sib haum xeeb thiab kev sib haum xeeb, zam qhov tsis xis nyob ntawm qhov kaj thiab qhov tsaus ntuj.
Qhov tseem ceeb ntawm uniformity yog ntxiv amplified los ntawm cov yam ntxwv ntawm structuralLED vaj huam sib luag teeb. Ib txwm ntug-lit LED vaj huam sib luag teeb cia siab rau lub teeb qhia daim phiaj kom faib lub teeb kom sib npaug, tab sis cov phaj no raug kev txom nyem los ntawm kev sib txuas ua haujlwm qis (feem ntau 70-80%) thiab lub teeb poob tseem ceeb vim kev xav thiab nqus. Qhov no tsis tsuas yog txo qhov kev ua tau zoo ntawm tag nrho cov teeb pom kev zoo ntawm LED vaj huam sib luag tab sis kuj ua rau "dej ripple" cov teebmeem thiab cov npoo tsaus nti hauv cov loj - loj panels. Direct-lit LED vaj huam sib luag teeb, uas tshem tawm lub teeb qhia phaj, muaj kev siv hluav taws xob ntau dua tab sis xav tau cov khoom siv kho qhov muag kom ntseeg tau tias lub teeb pom kev zoo. Yog tsis muaj kev tsim kho qhov muag kom zoo, lub teeb ci ncaj qha LED vaj huam sib luag tuaj yeem pom qhov "dot matrix", qhov twg cov chips LED pom tau zoo li qhov kaj ntawm lub vaj huam sib luag.
High uniformity kuj pab txhawb kev txuag hluav taws xob thiab kev ua neej ntev. IbLED vaj huam sib luag teebnrog cov teeb pom kev zoo sib xws muab qhov ci ci zoo ib yam thoob plaws tag nrho saum npoo, tshem tawm qhov xav tau rau overcompensating nrog lub zog ntau dua cov tswv yim los npog qhov chaw tsaus. Qhov no txo qis kev siv hluav taws xob los ntawm 15-25% piv rau cov qauv tsis yog-uniform. Tsis tas li ntawd, cov khoom siv hluav taws xob zoo sib xws- ua los ntawm qhov sib npaug ntawm lub teeb tso zis-tiv thaiv kev kub ntxhov hauv cheeb tsam ntawm LED chips, ncua lub neej ntawm LED vaj huam sib luag teeb los ntawm 30-40%. Rau cov haujlwm ua lag luam nrog cov sijhawm ua haujlwm ntev (piv txwv li, 12+ teev hauv ib hnub), qhov no txhais tau tias yuav txo tau cov nqi hluav taws xob tseem ceeb hauv cov nqi hluav taws xob thiab kev saib xyuas.
Yuav Ua Li Cas Optical Designs Txhim Kho Uniformity ntawm LED Vaj Huam Sib Luag Teeb?
Ob txoj hauv kev tsim kho qhov muag tseem ceeb tau tshwm sim los ua cov kev daws teeb meem zoo rau kev txhim kho qhov sib xws ntawm LED vaj huam sib luag teeb: freeform lo ntsiab muag rau cov tsis yog - teeb - cov qauv qhia phaj thiab microstructured optical ntsiab rau ncaj qha - lit systems. Txhua tus qauv tsim siv cov qauv kho qhov muag tshwj xeeb kom rov faib lub teeb, ua kom pom kev zoo ib yam thoob plaws lub vaj huam sib luag. Hauv qab no yog cov ncauj lus kom ntxaws tsom xam ntawm cov qauv tsim, txhawb los ntawm kev sim cov ntaub ntawv thiab cov txiaj ntsig simulation.
Freeform Lens Tsim rau Tsis yog- Lub Teeb -Plate LED Vaj Huam Sib Luag Teeb
Freeform lo ntsiab muag yog kev cai-tsim cov khoom siv kho qhov muag uas tswj lub teeb los ntawm kev cuam tshuam thiab tag nrho cov kev xav sab hauv (TIR), ua kom muaj kev tswj xyuas meej ntawm lub teeb faib. Rau tsis yog- teeb- daim ntawv qhiaLED vaj huam sib luag teeb, freeform lo ntsiab muag hais txog qhov kev sib tw tseem ceeb ntawm kev hloov lub teeb los ntawm sab -mounted LEDs kom npog tag nrho lub vaj huam sib luag. Tus qauv tsim yog raws li Snell's Law thiab ntug-ray txoj cai, uas ua kom ntseeg tau tias lub teeb rays los ntawm LED qhov chaw raug phim rau lub hom phiaj ntawm qhov teeb pom kev zoo.
Table 1 nthuav qhia cov tsis tseem ceeb ntawm PMMA freeform lens tsim rau 120 mm × 240 mm LED vaj huam sib luag teeb. Lub lens optimizes peb qhov kev ncua deb tseem ceeb: 5 hli nruab nrab ntawm lub lens thiab lub teeb -emitting vaj huam sib luag, 0℃tig lub kaum sab xis ntawm lub lens, thiab 7 hli ntawm LED thiab lub lens. Cov kev txwv no tau txiav txim siab los ntawm MATLAB programming thiab TracePro optical simulation, kom ntseeg tau tias lub teeb sib npaug sib npaug thoob lub vaj huam sib luag.
|
Tsim Parameter |
Theoretical tus nqi |
Kev ntsuas ntsuas |
Deviation |
|---|---|---|---|
|
Maximum radius ntawm refractive nto (mm) |
4.0 |
3.95 |
1.25% |
|
Qhov hluav taws xob qhov hluav taws xob (mm) |
10.0 |
9.9 |
1.00% |
|
Thickness ntawm lub projector (mm) |
6.0 |
6.2 |
3.33% |
|
Concave qhov tob (mm) |
3.6 |
3.5 |
2.78% |
Table 1: Sib piv ntawm Theoretical thiab Practical Parameters of Freeform Lens rauLED Vaj Huam Sib Luag Teeb
Cov txiaj ntsig kev sim qhia tau hais tias qhov kev tsim lub lens freeform no ua tiav qhov sib xws ntawm 95.74% hauv cov kev sim ua tau zoo, zoo sib xws nrog cov txiaj ntsig simulation ntawm 96.6%. Lub lens ua haujlwm los ntawm kev sib caisLED teebrau hauv ob yam: nyob ze - axis rays yog refracted los ua cov kab sib txuas uas teeb pom kev deb ntawm lub vaj huam sib luag, thaum tawm -axis rays undergo TIR los npog thaj tsam ze ntawm LED qhov chaw. Qhov no dual mechanism tshem tawm qhov tsaus me ntsis hauv nruab nrab thiab ci ntsa iab ze ntawm LEDs, kom ntseeg tau qhov ci ci zoo ib yam thoob plaws lub vaj huam sib luag. Yog tsis muaj lub lens freeform, tib yam tsis yog -light- phau ntawv qhia phajLED vaj huam sib luag teebmuaj ib tug uniformity ntawm tsuas yog 47.33%, nrog lub siab tshaj plaws illuminance sib txawv ntawm 620 lx ntawm cov npoo thiab qhov chaw.
Microstructured Optical Elements rau Direct -Lit LED Vaj Huam Sib Luag Teeb
Direct-lit LED vaj huam sib luag teeb siv ib qho array ntawm LEDs mounted rau hauv qab ntawm lub fixture, yuav tsum tau cov khoom kho qhov muag kom diffuse lub teeb tusyees tsis muaj lub teeb qhia phaj. Microstructured optical Cheebtsam -feem ntau yog ua los ntawm PMMA los yog PC-feature hemispherical convex microstructures teem nyob rau hauv ib tug seamless array, uas tawg lub teeb kom tshem tawm cov dot matrix nyhuv. Tus yuam sij rau qhov kev tsim no yog optimizing txoj hauj lwm ntawm microstructure txheeb ze rau LED array kom ua kom zoo sib xws.
Table 2 qhia txog qhov cuam tshuam ntawm microstructure txoj haujlwm ntawm qhov sib xws ntawm qhov ncaj qha -litLED vaj huam sib luag teebnrog 4 × 5 LED array (50 hli qhov sib nrug ntawm LEDs). Cov txiaj ntsig tau pom tias qhov sib txawv nce ntxiv thaum qhov kev ncua deb ntawm microstructure thiab LED array nce, nce mus txog qhov siab tshaj ntawm 86.67% ntawm qhov deb ntawm 11 hli. Tshaj li qhov kev ncua deb, uniformity txo vim txo lub teeb tawg ua haujlwm.
|
Qhov nrug ntawm Microstructure thiab LED Array (mm) |
Maximum Illuminance (lux) |
Yam tsawg kawg nkaus Illuminance (lux) |
Uniformity (%) |
|---|---|---|---|
|
1 |
264.69 |
57.81 |
21.84 |
|
5 |
127.62 |
98.30 |
77.02 |
|
11 |
120.05 |
104.05 |
86.67 |
|
15 |
120.62 |
101.55 |
84.19 |
|
20 |
123.88 |
98.80 |
79.75 |
Table 2: Uniformity ntawm Direct-Lit LED Vaj Huam Sib Luag Lub Teeb ntawm Txawv Microstructure Positions
Cov qauv tsim microstructured txhim kho qhov sib xws los ntawm 5 feem pua cov ntsiab lus piv rau qhov tsis yog -microstructured version (81.75% vs . 86.67%). Lub hemispherical microstructures (radius: 1mm, thickness: 4mm) tawg lub teeb ntawm ntau lub ces kaum, kom ntseeg tau tias qhov sib txawv ntawm qhov sib txawv ntawm LED nyob ib sab thiab qhov sib txawv ntawm lawv yog tsawg. Qhov kev tsim no tshwj xeeb tshaj yog rau cov loj - loj ncaj qha -lit LED vaj huam sib luag teeb, qhov twg cov dot matrix nyhuv yog ntau pronounced.
Kev sib piv kev soj ntsuam ntawm Optical Design Approaches
Ob qho tib si freeform lo ntsiab muag thiab cov ntsiab lus microstructured muab cov kev daws teeb meem zoo rau kev txhim kho LED vaj huam sib luag teeb pom kev zoo, tab sis lawv tsim nyog rau cov qauv sib txawv. Table 3 piav qhia txog lawv cov yam ntxwv tseem ceeb, qhov zoo, thiab daim ntawv thov scenarios.
|
Optical Design |
Txoj Cai Core |
Uniformity (Practical) |
Zog Efficiency |
Daim ntawv thov Scenario |
|---|---|---|---|---|
|
Freeform Lens |
Refraction + TIR |
95.74% |
Siab (Ntau dua lossis sib npaug li 85%) |
Tsis yog-teeb- taw qhia phaj ntug-lit LED vaj huam sib luag teeb |
|
Microstructured Element |
Lub teeb tawg |
86.67% |
Nruab nrab (Ntau dua lossis sib npaug li 80%) |
Direct-lit LED vaj huam sib luag teeb |
Table 3: Sib piv ntawm Optical Design Approaches rau LED Vaj Huam Sib Luag Teeb
Freeform lo ntsiab muag xa cov khoom zoo sib xws thiab kev siv hluav taws xob zoo, ua rau lawv zoo tagnrho rau cov ntawv thov siab - kawg qhov yuav tsum tau muaj teeb pom kev zoo (xws li, tsim studios, chaw kho mob). Cov ntsiab lus microstructured muab tus nqi- cov kev daws teeb meem zoo rau kev dav dav - lub hom phiaj ncaj qha -lit LED vaj huam sib luag teeb (xws li, chaw ua haujlwm, khw muag khoom), ntsuas kev ua tau zoo thiab pheej yig.
Dab tsi yog Cov Txheej Txheem Xaiv Qhov Tseem Ceeb rau Siab -UsformityLED Vaj Huam Sib Luag Teeb?
Xaiv qhov siab - sib xwsLED vaj huam sib luag teebyuav tsum tau ntsuas qhov kev tsim kho qhov muag, ntsuas kev ua tau zoo, thiab daim ntawv thov - cov cai tshwj xeeb. Hauv qab no yog cov txheej txheem tseem ceeb los txiav txim siab, raws li cov qauv kev lag luam thiab cov kev coj ua zoo tshaj plaws hauv engineering.
1. Uniformity thiab luminous efficiency
Ua ntej LED vaj huam sib luag teeb pom kev zoo sib xws ntawm ntau dua lossis sib npaug ntawm 85% ( ntsuas siv txoj kev, faib lub vaj huam sib luag rau 9 thaj tsam sib npaug thiab suav Emin / Eaverage). Rau cov ntawv thov tseem ceeb (piv txwv li, teeb pom kev zoo), xaiv cov qauv uas muaj qhov sib xws Ntau dua lossis sib npaug li 90%. Luminous efficiency yuav tsum siab tshaj los yog sib npaug rau 120 lm / W kom ntseeg tau tias lub zog efficiency, raws li teev los ntawm ENERGY STAR certification qauv.
2. Optical Component Zoo
Tshawb xyuas cov khoom siv thiab tsim cov khoom siv kho qhov muag. Freeform lo ntsiab muag yuav tsum tau ua los ntawm siab - transmittance PMMA (transmittance Ntau dua los yog sib npaug li 92%) kom txo tau lub teeb poob. Cov ntsiab lus microstructured yuav tsum muaj cov qauv tsim seamless kom tsis txhob muaj qhov tsaus ntxiv. Cov tuam txhab muaj npe nrov muab cov ntaub ntawv tsim kho qhov muag kom ntxaws, suav nrog cov txiaj ntsig simulation thiab cov ntaub ntawv sim.
3. Cov qauv tsim qauv
Xaiv cov qauv tsim nyog raws li daim ntawv thov xav tau:
Tsis yog-teeb-cov lus qhia phaj ntug-lit LED vaj huam sib luag lub teeb nrog lub ntsej muag dawb: Zoo tagnrho rau nyias- cov khoom siv profile (thickness Tsawg dua lossis sib npaug li 15 hli) thiab siab - cov kev xav tau sib xws.
Direct-lit LED vaj huam sib luag lub teeb nrog microstructured hais: Haum rau loj - loj panels (Ntau tshaj los yog sib npaug rau 1200mm × 600mm) thiab nqi-sensitive tej yaam num.
4. Xim Rendering thiab sib xws
Xim rendering Performance index (CRI) yuav tsum muaj ntau dua los yog sib npaug rau 90 kom paub tseeb tias cov xim muaj tseeb. Rau kev muag khoom thiab tsim daim ntawv thov, xav txog LED vaj huam sib luag teeb nrog R9 Ntau dua lossis sib npaug rau 50 (ib qho kev ntsuas ntawm cov xim liab rendering). Xim kub sib xws (Δu'v' Tsawg dua lossis sib npaug li 0.004) kuj tseem ceeb, tshwj xeeb tshaj yog thaum siv ntau lub vaj huam sib luag hauv tib qhov chaw.
5. Kev ntseeg tau thiab kav ntev
Ntsuam xyuas LED vaj huam sib luag lub teeb lub neej ntev (L70B50 Ntau dua lossis sib npaug li 50,000 teev) thiab kev tswj xyuas thermal. Kev faib hluav taws xob sib txawv tiv thaiv LED degradation thiab ua kom muaj kev ua tau zoo ib yam dhau sijhawm. Saib rau cov qauv nrog IP40+ kev tiv thaiv plua plav thiab corrosion- tiv thaiv thav duab rau ntev - siv sijhawm.
Kev lag luam Common Teeb meem thiab kev daws teeb meem rau LED Vaj Huam Sib Luag Teeb
Tej Teeb Meem
Tsawg tsis sib xws (tsawg dua lossis sib npaug li 80%) vim qhov tsis zoo ntawm kev tsim kho qhov muag lossis qhov chaw tsis raug.
Tsaus npoo los yog dot matrix cuam tshuam hauv - loj LED vaj huam sib luag teeb.
Txo cov luminous efficiency tshwm sim los ntawm lub teeb poob nyob rau hauv lub teeb qhia daim hlau los yog tsawg -zoo optical Cheebtsam.
Xim inconsistency hla ntau panels hauv tib lub installation.
Kev daws teeb meem (200 lo lus)
Txhawm rau hais txog qhov tsis sib xws, xaivLED vaj huam sib luag teebnrog freeform lo ntsiab muag (rau ntug-lit) lossis microstructured ntsiab (rau ncaj-lit) thiab txheeb xyuas cov ntaub ntawv tsis sib xws los ntawm thib peb- kev sim thib peb. Rau cov npoo tsaus lossis cov teeb meem dot matrix, xyuas kom meej cov khoom siv kho qhov muag tau muab tso rau kom raug -5 hli nruab nrab ntawm lub lens freeform thiab vaj huam sib luag thiab 11 hli ntawm microstructured element thiab LED array. Txhawm rau txhim kho luminous efficiency, xaiv cov uas tsis yog -teeb- cov ntawv qhia phaj tsim nrog cov lo ntsiab muag dawb (lub zog ua haujlwm ntau dua lossis sib npaug li 85%) thiab cov ntaub ntawv xa tawm siab (PMMA Ntau dua lossis sib npaug li 92%). Rau cov xim sib xws, yuav LED vaj huam sib luag teeb los ntawm tib lub batch ntau lawm thiab xyuas cov xim kub kam rau ua (Δu'v' Tsawg dua lossis sib npaug rau 0.004). Thaum lub sij hawm installation, tswj qhov sib nrug ntawm cov vaj huam sib luag thiab tsis txhob sib tshooj teeb pom kev zoo. Kev saib xyuas tsis tu ncua, xws li ntxuav lub vaj huam sib luag saum npoo kom tshem tawm cov plua plav (uas txo cov kev xa tawm los ntawm 10-15%), kuj tseem pab khaws cia kev ua haujlwm.
Cov ntaub ntawv pov thawj
Li, L., Zhuang, Q., Liu, S., et al. (2015). Tsim ntawm Freeform Lens rau Uniform Illumination ntawm Vaj Huam Sib Luag ntawm LED Flat Light.Infrared thiab Laser Engineering, 44(2), 561-566. https://doi.org/10.3788/IRLA201544.0205001
Xie, L., & Du, X. (2016). Ib txoj hauv kev tsim ntawm Optical Element rau LED Vaj Huam Sib Luag Teeb.Kev Tshawb Fawb Txog Kev Tshawb Fawb, 42(6), 53-57.
International Commission on Illumination (CIE). (2022).CIE 127: 2022 - Kev ua tau zoo ntawm LED teeb pom kev zoo khoom. https://cie.co.at/publications/cie-1272022-kev ua tau zoo-led-lighting-products
ENERGY STAR. (2023).LED Vaj Huam Sib Luag Teeb Specification Version 2.0. https://www.energystar.gov/products/lighting_fans/led_lighting/led_panel_lights/specifications
Zheng, Z., Hao, X., Liu, X. (2009). Freeform Surface Lens rau LED Uniform Illumination.Siv Optics, 48(35), 6627-6634. https://doi.org/10.1364/AO.48.006627
Ries, H., & Rabl, A. (1994). Ntug -Ray Principple of Nonimaging Optics.Optical Society of America A, 11(10), 2627-2632. https://doi.org/10.1364/JOSAA.11.002627
Sau ntawv
Uniformity (η): Ib qho tseem ceeb metric rau LED vaj huam sib luag teeb kev ua tau zoo, xam raws li η=(Emin / Eavage) × 100%. Cov txiaj ntsig siab dua qhia tau tias muaj qhov pom kev zoo sib xws.
Freeform Lens: Ib qho khoom siv kho qhov muag uas tsis yog -spherical, kev cai- tsim qhov chaw uas tswj lub teeb faib los ntawm kev cuam tshuam thiab tag nrho cov kev xav sab hauv.
Microstructured Optical Element: Ib feem nrog me me - nplai (μm mus rau mm) saum npoo nta uas tawg lub teeb kom txhim kho kev sib luag hauv kev ncaj qha -lit LED vaj huam sib luag teeb. 4. Txoj kev: Ib txoj hauv kev los ntsuas qhov sib xws, faib lub teeb vaj huam sib luag ntawm lub teeb rau hauv 9 thaj tsam sib npaug thiab ntsuas qhov pom ntawm txhua cheeb tsam.
L70B50 Lifespan: Tus naj npawb ntawm cov xuab moos tom qab uas 50% ntawm LED vaj huam sib luag teeb khaws 70% ntawm lawv qhov pib luminous flux, qhov taw qhia tseem ceeb ntawm kev ntseeg tau.
Koj puas xav kom kuv tsim ibcov ncauj lus kom ntxaws LED vaj huam sib luag lub teeb xaiv kev kuaj xyuashaum rau koj daim ntawv thov (xws li, chaw ua haujlwm, khw muag khoom, kho mob) lossis tsim ib qhosab-los ntawm- sab piv cov lusntawm sab saum toj- ntsuas siab- qauv LED vaj huam sib luag teeb?
https://www.benweilight.com/lighting-tube-bulb/2x4-4000lm-80cri-40k-min10-ztmvolt-led-flat.html
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