LED lens paub

Lub lens yog ua raws li txoj cai ntawm refraction ntawm lub teeb. Lub lens yog ib qho kev tivthaiv kev tivthaiv ntawm cov khoom uas muaj xws li iav, siv lead ua, lossis cov zoo li. Lub lens yog lub zog thaij sab nraud uas nws lub qhov hluav taws xob tawg yog ob qhov chaw kheej kheej (ib feem ntawm lub ntsej muag kheej), los yog ib qhov chaw kheej kheej kheej (ib feem ntawm lub ntsej muag kheej) ntawm lub plhaub sab hauv. Nws muaj ib cov duab tiag thiab ib daim duab duab. Lo ntsiab muag feem ntau yuav muab faib ua ob kab sab hauv: convex lo ntsiab muag thiab lace lo ntsiab muag. Lub hauv plawv yog ib qho thicker tshaj qhov ntug qhov, uas yog hu ua lens, uas muaj peb hom convex, convex, convex thiab concave; lub hauv nruab nrab yog thinner tshaj qhov ntawm sab ntug, uas yog hu ua concave lens, lub plhaub tws hauv plhaub, lub rooj sib txoos thiab cov yeeb yam. LED lo ntsiab muag feem ntau yog silicone lo ntsiab muag, vim hais tias silicone yog resistant mus rau high kub (thiab tseem yuav reflowed), yog li nws feem ntau yog ntim ncaj qha ntawm LED nti. Feem ntau, cov xim lo ntsiab muag me me thiab me me muaj 3-10 mm. Thiab cov lens LED feem ntau zoo txuam nrog cov LED, uas yuav pab txhim kho cov teeb pom kev zoo ntawm cov LED, thiab qhov muag kho qhov muag LED lens uas hloov lub teeb pom kev ntawm cov LED, uas yog, zoo txuam nrog cov LED, pab txhim kho cov teeb ci-ua haujlwm ntawm LED, Kev kho qhov muag uas hloov lub teeb pom kev ntawm ib qho LED. Lub high-power LED lens / reflector yog tsuas yog siv rau kev sau thiab coj qhia lub teeb ntawm high-power LED txias lub teeb qhov khoom. Lub high-power LED lens tsim lub teeb nruam curve raws li lub kaum sab xis ntawm cov LEDs sib txawv, thiab ua rau kom pom qhov yoojyim kom tsis txhob poob lub teeb thiab txhim kho cov teeb pom kev zoo (thiab cov txheej txheem lem optical lens). Cov nram qab no yog tsom rua cov theem ob theem siab zog lens ntawm PMMA cov khoom. a), los ntawm cov khoom 1, silicone lens a, vim hais tias silicone yog kub tsis kam (kuj yog reflow soldering), yog li nws feem ntau yog ntim ncaj qha rau ntawm tus chip LED. b. Lub dav hlau silicone yog me me hauv lub ntim thiab muaj ib txoj kab uas hla ntawm 3-10 hli. 2, PMMA lens ib, qib siab kho PMMA (polymethyl methacrylate, nquag paub: acrylic). b, yas ntaub ntawv, qhov zoo: cov khoom ua tau zoo tshaj plaws (tuaj yeem ua tiav ntawm kev txhaj tshuaj molding, extrusion); high transmittance (93% penetration tus nqi ntawm 3 hli thickness); Disadvantages: qhov kub tsis tshaj 80 ° (sov kub kom sov 92 degrees). 3, PC lens a, cov khoom siv qib siab kho kom zoo Polycarbonate (raug xa mus rau PC) polycarbonate. b. Cov ntaub ntawv yas, qhov zoo: cov khoom ua tau zoo heev (muaj peev xwm ua tiav ntawm kev txhaj tshuaj molding, extrusion); lub teeb hloov ntawm kab mob yog me ntsis qis dua (qhov nkag mus txog li 89% ntawm 3mm thickness); Disadvantage: qhov kub tsis siab tshaj 110 ° (tshav kub kub ntawm qhov ntsuas kub 135). 4, iav lens optical iav khoom, qhov zoo: siab kis (97% nkag mus ntawm 3mm thickness), kub ua hauj lwm; tsis zoo: qhov hnyav hnyav, hnyav hnyav, hnyav hnyav, hnyav hnyav, hnyav, hnyav ua kom tsis yooj yim, ua haujlwm tsis muaj nqi, nqi siab, thiab lwm yam. . Tsis tas li ntawd, cov kev tsis zoo ntawm cov iav piv rau PMMA thiab PC cov ntaub ntawv muaj ntau lub zog, thiab kev tshawb nrhiav thiab kev tshawb nrhiav ntxiv. Nyob rau hauv txoj kev txhim kho tam sim no uas muaj peev xwm pom tau tam sim no, cov cuab yeej tsis khov kho ntawm lub khob tsuas tuaj yeem kho kom zoo los ntawm kev kho los yog cov tshuaj tiv thaiv, tab sis tom qab cov kev kho mob Cov kab mob ntawm lub iav lens yuav raug txo kom tsawg, tab sis nws tseem yuav loj tshaj hais tias ntawm qhov dog dig optical yas lens. Yog li ntawd, lub prospect ntawm iav lo ntsiab muag yuav txawm dav dua. b) Daim ntawv thov ntawm lub lens lens 1. Thawj lub lens a. Lub lens thawj yog ntim ncaj qha (los yog sib npaug) rau ntawm LED chip yas dhos thiab ua ke nrog cov LED. b, LED chip (chip) theoretically emits 360 degrees, tab sis qhov tseeb ntawm tus nti tso rau ntawm lub teeb bracket yuav tsum tau tsau thiab ntim, yog li qhov siab tshaj plaws lub teeb rau ntawm lub nti 180 degrees (ntau tshaj 180 ° range kuj muaj lub me me ntau ntawm lub teeb nrig), lwm nti Yuav muaj qee qhov teeb pom kev zoo, kom tag nrho cov teeb ntawm lub nti tuaj yeem siv cov ntsiab lus ntawm ib lub lens thiab txawv lub kaum sab xis xws li 180 °, 160 °, 140 °, 120 °, 90 °, 60 °, thiab lwm yam, tab sis sib txawv Muaj ntau qhov sib txawv ntawm qhov teebmeem ntawm lub teeb tawm ntawm lub qhov muag ntawm lub qhov rooj (txoj cai dav dav yog: qhov loj dua lub kaum sab xis, ntau dua qhov ua tau zoo). c. Thawj lub lens feem ntau yog ua los ntawm PMMA, PC, kho qhov muag iav, silica gel, thiab lwm yam. 2. Ob lens a. Lub lens theem thiab cov LED yog ob yam khoom, tab sis lawv muaj kev sib txig thaum siv. b. Cov kev ua haujlwm ntawm lub lens secondary yog kev sib dhos rau lub teeb ntawm lub teeb ci ntawm LED qhov chaw ntawm lub teeb rau lwm yam ntawm 5 ° thiab 160 °. Qhov muab faib rau ntawm lub teeb pom kev tuaj yeem raug muab faib ua ke: voj, elliptical thiab rectangular. c. Cov khoom siv lens feem ntau yog qib qis tshaj qib PMMA lossis PC; hauv cov rooj plaub tshwj xeeb, yuav xaiv cov iav. 3) Kev faib tawm los ntawm kev qhia 1. Transmissive (convex lens) a. Thaum lub teeb ci teeb ntawm lub lens (ob chav convex muaj ib tug nkhaus ntws), lub teeb yuav thim thiab condense, thiab thaum kho qhov kev ncua deb ntawm lens thiab LED Qhov lub kaum sab xis kuj yuav hloov (lub kaum sab xis yog feem xyuam nrog proportional kom nrug deb). Qhov laj kab tsim ntsej muag ntawm cov qauv lens optical yuav tsum yog zoo li, tab sis vim lub lens taub thiab lens hom, lub teeb siv ntawm LED tsis siab thiab qhov ntug ntawm qhov chaw tau pom tseeb daj sawv. b, feem ntau siv hauv lub kaum sab xis loj (50 ° lossis tshaj saud), xws li cov teeb txawb, teeb teeb thiab lwm yam khoom siv sab hauv; 2, catadioptric (cone los yog khob) a, lens tsim nyob rau hauv pem hauv ntej ntawm nkag mus rau lub teeb ci, thiab qhov sib tov ntws tuaj yeem sau tau thiab muaj kev cuam tshuam tag nrho sab nrig, thiab sib tshooj ntawm ob hom teeb (tib lub kaum) feem ntau zoo meej lub teeb thiab siv cov nqaij nyug zoo nkauj; b, kuj muaj nyob hauv lub khob Lub nplais ntawm lub lens yuav raug hloov mus ua mirrored, frosted, beaded, striped, threaded, convex lossis concave kom tau txais qhov chaw sib txawv. 3. Lub lens module a yog lub lens lub taub hau uas yog tsim los ntawm kev txhaj tshuaj molding ntau ntau ntawm cov lenses nkaus xwb los ntawm kev txhaj tshuaj, thiab tsim tau rau hauv ib lub lens module ntawm 3, 1, 5, los sis kaum tawm ntawm ib qho raws li qhov sib txawv kev xav tau; Ob tug nyias lo ntsiab muag yog chav ua ke los ntawm lub bracket. b. Qhov kev tsim no yuav txuag cov khoom tsim tawm, ua tiav cov khoom siv kom zoo, txuag qhov chaw hauv cov teeb pom kev zoo, thiab ua kom yooj yim mus cuag "muaj hwj chim" thiab lwm yam ntxwv. 4), cov khoom siv thiab cov khoom 1, LED lens li optical qib khoom, rau lub teeb kis mus rau, thermal stability, ceev, refractive index uniformity, refractive index stability, dej nqus, turbidity, ntev tshaj plaws ua hauj lwm kub, thiab lwm yam. . Yog li, cov khoom ntawm lub lens yuav tsum raug xaiv raws li qhov tseeb qhov teeb meem. Nyob hauv txoj cai, qib PMMA raug xaiv, thiab qib kho qhov muag qib PC yuav raug xaiv yog tias nws muaj kev tshwj xeeb. Tam sim no, cov Japanese Mitsubishi PMMA cov khoom yog qhov zoo tshaj plaws (VH001 yog hom xaiv ntau heev), thiab Mitsubishi ceg nyob rau hauv Suav teb, Nantong Liyang, yuav tsawg dua. 2, yuav tsum muaj 10,000 los yog ntau dua ntawm cov rhiav kev plua plav, cov neeg tsav tsheb yuav tsum hnav khaub ncaws zoo li qub, hnav cov ntiv tes hnav, hnav cov qhov ncauj qhov ntswg, thiab lwm yam kev ntsuas plawv, thiab kev soj ntsuam thiab ntxuav kev cob qhia. 3, yuav tsum muaj kev kho qhov muag tshuaj molding machine xws li Toshiba, Demag, Haitian, Zhenxiong thiab lwm hom tshuaj molding cav tov, thiab nruj tswj kev txhaj tshuaj molding txheej txheem kom tau txais cov khoom tsim nyog. 4, tshuaj ntsuam xyuas: tsis muaj npuas, tsis muaj kev nyuaj siab, tsis muaj ntsws, tsis muaj ntws, tsis muaj crescent; cov duab raug Rt <> 005 npoo qhov roughness Ra <> 5, cov khoom yuav tsum muab ntim nrog cov tshuaj tiv thaiv PVC tiv thaiv, thiab yuav tsum muab ntim cia ntim txhua qhov chaw cia, yuav tsum tau muab cov ntsuas kub thiab qhov av qis, thiab qhov zoo tshaj yog tsis pub ntau tshaj ib xyoos. Los ntawm tus tsim thiab cov txheej txheem ntawm cov lens saum toj no, lub lens seemingly yooj yim LED, los ntawm kev tsim kom tiav cov khoom, muaj cov txheej txheem ntau ntawm software thiab kho vajtse, uas kuj ua rau qhov txawv ntawm LED lens ntawm lub khw yuav loj heev. Los ntawm lub ci yav tom ntej ntawm LED teeb pom kev zoo, lub lens yog ib qhov tseem ceeb ntawm cov teeb pom kev zoo ntawm LED, thiab kev lag luam prospects yuav zoo dua thiab zoo dua. 5), LED lens tsim thiab pwm ua 1, ua ntej nyob ntawm lub teeb ci (high-power LED), ntau hom ntawm high-power LED (xws li CREE, lumileds, Seoul, Osram, Edison, Changsen qhov chaw, thiab lwm yam) , nws cov nti Cov txheej txheem thiab ntim cov txheej txheem, lub teeb pom kev zoo, thiab lwm yam yuav sib txawv, uas ua rau tib lub lens nrog txawv cov qauv ntawm hom LED yuav txawv; thiaj li yuav tsum tau tsim kho kev lag luam (hom lub npe zoo), kom ua tiav cov kev xav tau; Optical tsim software (xws li Tracepro, CodeV, Zemax, thiab lwm yam.) Tsim thiab simulated optical khiav lub teeb, tsim kom tau txais qhov haum optical aspheric nto; 3, LED lens nws tus kheej yog ib qhov muaj tseeb kho qhov muag, yog li nws precision yuav tsum tau rau cov pwm muaj siab heev, tshwj xeeb tshaj yog Cov zauv ua tiav ntawm qhov lem qhov muag ntawm lub lens yuav tsum yog 0.1 μm, thiab lub lens eccentricity yuav tsum tsis pub dhau 3 μm. Feem ntau, kev ua cov moulds zoo li no yuav tsum muaj cov khoom nram qab no: ultra-precision processing machines (xws li: PRECITECHNANOFORM350), CNC kev ua machine, ntom grinders, milling cav, CNC fais cav, ntom profileometers, thiab lwm yam. , qhov feem ntau ntawm cov mould yog qhov kho qhov muag pwm, ua ntej xaiv cov pwm tshwj xeeb, ua tiav lub embryo pib, nickel plating thiab siv ultra-precision ua tshuab rau aspherical nto ua. VI) Zoo 1. Tsis muaj teeb meem npaum li cas los yog nyob ze, lub txee (khob khob) tsis txawv ntawm lub lens. Nyob rau hauv cov nqe lus ntawm uniformity, lub lens yuav superior rau reflector. 2, nrog lub kaum sab xis ntawm lub lens LED, cov nyhuv yog qhov zoo tshaj qhov teeb txawb, vim nws tau tua deb! Lub voj txoos tau muab tso rau hauv lub lens (vim tias qhov LED nws tus kheej yuav tsum muaj lub lens) thiab tom qab ntawd tseem ceeb heev los ntawm cov reticle. Lub sij hawm no, ntau lub teeb yog khib nyiab. Nws yog qhov zoo rau kev mloog zoo ntawm lub lens, thiab lub lens lub illumination kaum yog zoo handled. Ib qho ntxiv: Yog hais tias qhov chaw seem, siv 3 1W zoo dua li siv 3W. 3. Hauv kev sib piv, lub teeb txawb muaj ntau lub teeb nruj, tab sis qhov kev xav tsis zoo, thiab lub lens yog qhov txawv. 4, LED nkag mus rau seem siab dua. VII) Lub teeb meem tsis pom kev 1. Lub luminous flux ntawm lub luminaire nrog ib lub teeb thiab lub lens yeej ua tau raws li lub teeb uas xav tau los ntawm tus txheej txheem. Nws tseem yog qhov yuav tsum tau xav txog yam xws li kev xa tawm ntawm sab nraud, lub lens, thiab kev poob ntawm lub teeb. Lub hwj chim loj ntawm lub teeb los yog lub teeb pom kev zoo yuav tsum yog lub lens rau diffuse qhov nqaj nqaj hlau los ua kom tau raws li tus qauv tsim nyog. Yuav kom ua rau cov nyhuv kho qhov muag tau zoo dua, lub teeb yuav tsum muab faib ua cov ceg me me hauv qhov tsim. Lub hom phiaj ntawm qhov no yog ua kom tawg nthwv dej ntawm lub teeb yoj, kom cov khoom muaj ib yam tsos tsis zoo. Hauv txhua chav me, ib qho ellipsoid siv los vim tias qhov nto muaj curvatures hauv cov kab rov tav thiab txoj kev qhia, kom txawv diffusion radii tuaj yeem ua tiav nrog ntau yam rida ntawm curvature hauv ob qho tib si. Nws lub hom phiaj yog ua kom dhau qhov tsis zoo ntawm cov cuab yeej cuab tam thiab ua kom muaj kev siv lub hwj huam los ua kom tau zoo thiab ua kom muaj lub teeb pom kev zoo. Qhov tseeb, lub plhaub txheej ntawm lub teeb yog PC khoom (txhaj tshuaj tas), thiab cov qe paj paws thiab cylindrical yog cov koog uas tsis yog-me thiab tsis muaj tus qauv zoo li qub, thiab lub teeb ploj loj thiab lub kaum sab xis yog me me. 2. Txij li ib qho ntawm lub lens yog ib tus nplhaib uas muaj lub voj voos nyob rau ob qho tib si ntawm txoj kab thiab cov lus qhia ntsig, qhov xwm txheej yuav ua rau ob sab nyob hauv txoj kev taw qhia thiab txoj hauv kev. Txij li thaum lub caij ntawm curvature nyob rau hauv ob cov lus qhia yog ywj siab ntawm txhua lwm yam, ob lub curvatures yuav cais tau raws li yuav tsum tau, thiaj li hais tias lub teeb lub teeb tawm diffused mus txawv extents nyob rau ob qho tib si qhia. Yog li, siv lub lens tsim ntawm bidirectional curvature nto, cov zis lub teeb yuav ua tau ntau dua dawb faib raws li kev tsim cov qauv, thiab lub luminous flux yuav siv ntau yam zoo, li no txo cov khoom siv tsis ruaj thiab glare. Tsis tas li ntawd, txij thaum siv txoj kev hloov mus los, qhov teeb muaj qhov sib txawv ntawm kev hloov lub teeb thiab ib qho zoo. Kev ua tiav huab cua PMMA teeb los yog khib nyiab tuaj yeem ua rau chazzling los yog glaring chords nyob nruab nrab ntawm lub teeb ci, tiam sis qhov ci ntsa iab yog txo ntawm lub periphery ntawm lub teeb ci. Ntau zaus kev sib ntsib thiab chaw ua hauj lwm teeb pom kev zoo yuav tsum tshem tawm qhov chaw tsis zoo no los yog txo qhov muag qhov muag tsis pom kev. 3. Lub raj ntawm txhua lub lens unit ntawm lub cev yog ib tug duab plaub, kom lub chaw yuav tsum tau muab tso ze thiab ntxiab. Qhov teeb meem uas tsis muaj teeb meem yog kis los ntawm qhov kev hloov ntawm lub lens unit los tsim ib qho kev tawm suab hauv txoj kab ncaj nruab nrab thiab lub zog diffusion nyob rau ntawm txoj kev taw qhia. Los ntawm kev kho qhov loj ntawm ib chav nyob rau hauv ib pawg ntawm lo ntsiab muag thiab lub vojvoog ntawm curvature ntawm ob qho kev qhia, kev faib tawm ntawm lub teeb pom kev zoo lub teeb nyob rau hauv ntau qhov sib txawv ntawm qhov nruab nrab yog kho kom tiav cov teeb uas yuav tsum tau tsim los ntawm tus tsim. Txij li thaum cov nyhuv ntawm qhov xwm txheej ntawm qhov teeb meem ntawm qhov teeb meem caws pliav yog qhov deflect lub teeb tsim lub diffusion, cov xov tooj ntawm cov hlwb, qhov loj ntawm lub tsev, thiab lub vojvoog ntawm curvature ntawm txhua lub lens nyob rau hauv cov khoom tsim yuav raug hloov raws li qhov tseeb qhov teeb meem. Qhov tseeb qhov teeb meem yog tias lub hauv paus ntawm lub lens ntawm lub zog-lens (muab faib lub tsev me me) yog tsim los ntawm cov khw, thiab tsuas yog qhov lens qhov siab, lub kaum sab xis, thiab cov khoom raug xam tias yog thaum xaiv. 4. Peb xaiv muab lub teeb ci rau ntawm sab hauv ntawm lub lens kub siab rau. Qhov tseeb ntawm lub teeb pom kev yog los ntawm lub lens, qhov tsawg dua lub teeb ntawm lub teeb ntawm lub teeb uas tau sau los ntawm lub lens, yog li qhov qis qhov ua tau zoo ntawm lub lens system yog. Raws li qhov qhia tawm ntawm tus lens ib zaug: r = (nL-1) f. Qhov chaw ntawm r-convex curvature radius, nL-lens khoom refractive index, f-lens focal ntev nyob rau hauv cov ntaub ntawv ntawm xaiv lens khoom, lub loj dua focal ntev, qhov loj dua lub vojvoog ntawm curvature. Nyob rau tib lub lens aperture Φ, qhov loj dua lub vojvoog ntawm curvature, thinner lub lens. Lub thicker lub lens, qhov ntau pom tseeb lub aberration yuav, uas yuav cuam tshuam rau cov nyhuv. Yog li, xaiv lub lens nrog lub nras focal ntev kom ntau li ntau tau. Nyob rau tib lub sij hawm, lub focal ntev nce thiab qhov loj ntawm qhov kho qhov system nce. Yog li no, lub focal ntev ntawm lub lens tsis tau caum cuag qhov siab tshaj plaws. Txij li thaum lub lens thickness tsis loj heev, lub Fresnel lens tsis siv, thiab cumbersomeness thiab tus nqi ntawm kev yog zam.