Science of Sight: DeconstructingAnti-Glare Technologies thiab lawv lub neej ntev hauv qis-UGR Luminaires
Kev nrhiav pom kev nplij siab nyob rau hauv qhov chaw illuminated hinges ntawm kev tswj zoo ntawm glare, ntsuas los ntawm Unified Glare Rating (UGR). Tus nqi UGR ntawm 19 lossis qis dua tam sim no yog qhov yuav tsum tau muaj nyob hauv ntau cov qauv thoob ntiaj teb rau chaw ua haujlwm, tsev kawm ntawv, thiab chaw kho mob. Txawm li cas los xij, kev ua tiav qhov no tsis yog qhov teeb meem ntawm lub caij nyoog tab sis ntawm qhov tseeb kho qhov muag engineering. Cov thev naus laus zis ua haujlwm -los ntawm cov vaj huam sib luag prismatic mus rau batwing distributions- sawv cev rau cov kev xav thiab kev siv tshuab rau kev tswj lub teeb. Tsis tas li ntawd, cov lus nug tseem ceeb ntawm seb cov kev daws teeb meem no puas poob qis thaum lub sijhawm, cuam tshuam lawv cov kev ua tau zoo, cais cov teeb pom kev zoo - zoo ntawm cov khoom raws li cov khoom lag luam.
Lub Arsenal ntawm Glare Tswj: Ib qho kev sib tsoo
Txhua lub tshuab tiv thaiv-glare ua haujlwm ntawm tib lub hauv paus ntsiab lus: txhawm rau txwv qhov luminance (brightness) ntawm lub teeb ci ntawm cov ces kaum siab, qhov tseeb uas nws nkag mus rau ntawm lub qhov muag thiab ua rau tsis xis nyob, thaum tib lub sijhawm coj cov teeb pom kev zoo nyob qhov twg nws xav tau.
Deep-Cavity Prismatic Vaj Huam Sib Luag Tsim:Qhov no yog ib qho kev daws teeb meem classic thiab zoo heev. Lub luminaire nta qhov tob tob uas lub cev tiv thaiv lub teeb ci LED los ntawm kev pom ncaj qha. Lub vaj huam sib luag prismatic ua raws li qhov thib ob optic. Nws cov qauv zoo suav nrog- cov grooves me me thiab facets- khoov thiab tswj lub teeb rays. Qhov no refraction ua kom ntseeg tau tias lub teeb tawm hauv qhov nruj, tswj lub khob hliav qab (xws li, 30-45 degrees), txo qis lub kaum sab xis siab. "Cov kab noj hniav sib sib zog nqus" nce lub kaum sab xis tiv thaiv, ua rau nws tsis tuaj yeem pom lub teeb pom kev los ntawm cov qauv saib cov haujlwm.
Micro-Louver lossis Honeycomb Grille:Qhov no yog txoj kev ncaj qha thiab meej tshaj plaws ntawm kev tswj glare. Ib daim phiaj me me, blackened baffles (louvers) los yog hexagonal hlwb (honeycomb) yog muab tso rau saum lub teeb. Cov hlwb no ua tus collimator, tsuas yog tso cai rau lub teeb uas taug kev nyob ze - txoj kev ntsug kom dim. Lub teeb sim tawm ntawm lub kaum sab xis siab yog absorbed los ntawm blackened sab ntawm lub hlwb. Cov thev naus laus zis no ua tiav qhov tshwj xeeb qis UGR qhov tseem ceeb (feem ntau qis dua 16) tab sis los nrog kev ua lag luam ua haujlwm zoo -tawm, vim tias ib feem ntawm lub teeb tsim tau nqus thiab poob hauv cov grille nws tus kheej.
Batwing Light Distribution (Asymmetric Optics):Qhov no yog txoj hauv kev zoo tshaj plaws thiab muaj txiaj ntsig, txav los ntawmthaivteeb rautxawj ntse shapingnws. Hloov ntawm tus qauv diffuser uas tawg lub teeb sib npaug, lub tshuab batwing siv cov khoom siv kho qhov muag thib ob-feem ntau Total Internal Reflection (TIR) lo ntsiab muag lossis cov reflectors ua ke rau hauv kab noj hniav. Cov optics no yog tsim los tsim lub teeb me me tam sim ntawd hauv qab lub teeb pom kev zoo (qhov twg nws yuav ua rau lub ntsej muag ncaj qha) thiab qhov siab tshaj plaws ntawm cov ces kaum ntawm 30-60 degrees ntawm nadir. Qhov no tsim qhov dav, txawm tias ntxuav lub teeb hla lub dav hlau ua haujlwm nrog qhov tsis tshua muaj luminance ntawm cov ces kaum ua txhaum. Nws leverages tus qauv kho qhov muag nws tus kheej los daws qhov teeb meem, feem ntau ua rau ntau dua tag nrho cov kev ua tau zoo dua piv rau louver-raws li kev daws teeb meem.
Kev Ntsuas Lub Sij Hawm: Cov Khoom Siv Degradation thiab Ntev -Lub Sijhawm Ua Haujlwm
Qhov qis qis pib UGR tsis muaj nuj nqis yog tias nws degrades dhau lub luminaire lub neej. Cov lus nug ntawm kev laus yog li ntawd tsis yog ib qho ntxiv; nws yog qhov tseem ceeb rau qhov khoom siv tau.
Prismatic Panels thiab Optical Materials:Feem ntau siab - cov vaj huam sib luag zoo yog tsim los ntawm PMMA (acrylic) lossis polycarbonate. Hwm PMMA yog qhov tshwj xeeb ruaj khov thiab tiv taus yellowing, tshwj xeeb tshaj yog thaum kho nrog UV stabilizers. Txawm li cas los xij, cov qib qis ntawm cov yas, raug tshav kub ntau dhau (los ntawm lub cav tsis zoo thermally tswj LED), thiab UV hluav taws xob los ntawm lub hnub ci tuaj yeem ua rau cov duab tsis zoo.Yellowing yog qhov kev txhawj xeeb tseem ceeb.Raws li cov khoom yellows, nws scatters lub teeb sib txawv, txo transmittance thiab altering cov ua tib zoo engineered photometric faib. Kev tswj hwm qhov muag pristine txo qis, thiab UGR tus nqi tuaj yeem nce siab vim tias qhov system ua haujlwm tsawg dua thiab ntau dua.
Honeycomb Grilles:Feem ntau yog ua los ntawm txhuas los yog ruaj khov, blackened plastics, grilles lawv tus kheej muaj kev tiv thaiv zoo rau optical degradation. Lawv qhov kev ua tau zoo yog khi rau kev ruaj ntseg ntawm lawv cov xim dub. Yog hais tias cov txheej no yuav ploj mus los yog tev, nws qhov nqus tau zoo yuav txo qis, uas muaj feem cuam tshuam ntau lub teeb thiab ua kom pom tseeb. Txawm li cas los xij, qhov no yog hom tsis tshua muaj rau cov khoom lag luam los ntawm cov tuam txhab muaj npe nrov.
Tus Neeg Ua Phem Tseeb: LED Tsav Tsheb thiab Kev Tswj Thermal:Qhov loj tshaj plaws kev hem thawj rau ntev - lub sij hawm glare tswj feem ntau tsis yog lub optic nws tus kheej, tab sis lub kaw lus nyob ib ncig ntawm nws. Tus tsav tsheb tsis ua haujlwm ntawm LED tuaj yeem ua rau flicker, uas ua rau pom qhov tsis xis nyob tsis cuam tshuam nrog tab sis ua rau pom qhov pom ntawm qhov muag pom. Qhov tseem ceeb tshaj, qhov kub tsis txaus ua rau muaj qhov kub siab ntawm LED qhov sib txuas. Qhov no ua rau kom cov nqi qis ntawm LEDs (lumen poob) thiab degradation ntawm cov khoom nyob ib puag ncig- suav nrog cov khoom siv kho qhov muag. Lub qhov dej zoo-tsim lub luminaire tuav ruaj khov thermal tej yam kev mob, khaws cia ob qho tib si lub teeb tso zis thiab kev ncaj ncees ntawm cov anti-glare Cheebtsam rau nws tag nrho cov rated lub neej.
Xaus: Qhia meej rau Lub Sij Hawm Ntev
Thaum ntsuas qhov qis -UGR luminaire, qhov tshwj xeeb yuav tsum dhau ntawm daim ntawv thov. Nws xav tau kev nug tob ntxiv:
Xav tau cov ntaub ntawv Photometric:Thov cov ntaub ntawv IES lossis LDT kom pom cov teeb pom kev zoo thiab txheeb xyuas qhov kev suav UGR hauv cov qauv.
Tshawb nrhiav cov ntaub ntawv:Nug tshwj xeeb rau cov khoom siv kho qhov muag (piv txwv li, UV-stabilized PMMA) thiab nws qhov kev cia siab lumen txij nkawm ib sab ntawm LED.
Nkag siab txog Thermal Design:Ib yam khoom uas muaj kev tswj xyuas thermal zoo (piv txwv li, cov cua kub txaus, Tj tsawg) tsis yog cia siab rau lub neej ntev rau LEDs; nws tseem yog kev tiv thaiv kev ncaj ncees ntawm nws qhov glare tswj system.
Hauv qhov tseem ceeb, ua tiav UGR qis yog qhov kev vam meej ntawm kev kho qhov muag, tab sis kev tswj hwm nws yog kev cog lus ntawm cov ntaub ntawv zoo thiab cov txheej txheem thermal stability. Txoj kev daws teeb meem zoo tshaj plaws tsis tas yuav yog ib qho uas muaj qhov ua tau zoo tshaj plaws, tab sis qhov uas nws ua tib zoo suav nrog kev ua tau zoo ntawm photometric tau lees tias yuav ua siab ntev rau ntau xyoo, ua kom pom kev nplij siab thiab zoo - nyob rau hauv tag nrho nws lub neej kev pab cuam.
