Fikradda aasaasiga ah ee muraayadda
Muraayada waxaa loo sameeyay si waafaqsan sharciga iftiinka iftiinka. Lensku waa qayb indhaha ka samaysan oo ka samaysan walax hufan sida galaas, crystal, ama kuwo kale. Lensku waa refractor oo korkiisa refractive uu yahay laba dusha sare ee wareegsan (qayb ka mid ah dusha koollada), ama dusha koollada (qayb ka mid ah dusha koollada) iyo jidh fidsan. Waxay leedahay sawir dhab ah iyo muuqaal muuqaal ah. Lenses guud ahaan waxa loo qaybin karaa laba qaybood oo balaadhan: lens concave iyo convex lens. Qaybta dhexe way ka dhumuc weyn tahay qaybta cidhifka, taas oo loo yaqaan lens convex halka qaybta dhexe ay ka khafiifsan tahay qaybta cidhifka.
Muraayadaha LED-ku guud ahaan waa lenses silikoon sababtoo ah silikoon waa u adkaysta heerkulka sare sidoo kale dib ayaa loo shubi karaa, sidaas darteed waxaa badanaa si toos ah loogu xiraa chips LED. Lens-ka guud ee silikoonka waa mid yar oo mug leh, dhexroorkiisuna waa 3-10mm, muraayada LED-ku guud ahaan waxay si dhow ula xidhiidhaa LED-ka, taas oo gacan ka geysan karta hagaajinta waxtarka iftiiminta iftiinka LED-ka iyo nidaamka indhaha ee beddelaya goobta iftiinka. qaybinta LED-ka.
Muraayadaha LED-ka ee awoodda sare leh ayaa inta badan loo adeegsadaa ururinta iyo hagidda iftiinka tamarta sare ee LED alaabta ilayska qabow. Lens-ka awoodda sare leh ee LED wuxuu naqshadeeyaa qalooca qaybinta iftiinka iyadoo loo eegayo xagasha LED-yada kala duwan halkii laga heli lahaa muraayadaha indhaha ee loo yaqaan 'aspherical lens', waxayna kordhisaa muraayadda indhaha si loo yareeyo khasaaraha iftiinka iyo hagaajinta waxtarka iftiinka.
Ku saabsan muraayada LED-ka, waxaan rajeyneynaa in sharraxaadda soo socota ay kaa caawineyso inaad fahamto farqiga u dhexeeya shay kasta oo lenska LED ah iyo faa'iidooyinka muraayadaha LED.
I. Kala soocida walxaha ee lenska LED
1. Lenska silikoon
1) Sababtoo ah silikoonku wuxuu u adkaystaa heerkulka sare (iyo sidoo kale dib ayaa loo shubi karaa), badanaa si toos ah ayaa loogu xiraa chip LED.
2) Leniska guud ee silikoonka mugga wuu yar yahay wuxuuna leeyahay dhexroor 3-10 mm.
2.PMMA muraayad
1) Heerka indhaha ee PMMA (polymethyl methacrylate, oo loo yaqaan: acrylic)
2) Qalabka caaga ah, kuwaas oo leh faa'iidooyinka waxtarka wax-soo-saarka (waxaa lagu dhammaystiri karaa qaabeynta duritaanka, extrusion) iyo gudbinta sare (qiyaastii 93% dhexda ee dhumucda 3mm), laakiin sidoo kale heerkulku kama badnaan karo 80 ° C (heerkulka kuleylka 92 ° C )Soo-gaabsho.
3. muraayada PC
1) Polycarbonate (PC) polykarbonate heerka indhaha
2) Qalabka caaga ah, kuwaas oo leh faa'iidooyinka waxtarka wax-soo-saarka (waxaa lagu dhameyn karaa qaabeynta duritaanka, extrusion) iyo gudbinta sare (qiyaastii 89% dhexda ee dhumucda 3mm), laakiin sidoo kale heerkulku kama badnaan karo 110 ° C (heerkulka kuleylka 135 ° C) C))
4. Muraayadaha muraayadaha
Maaddada muraayadda indhaha, taas oo leh faa'iidooyinka gudbinta iftiinka sare (97% gelitaanka dhumucda 3mm) iyo iska caabinta heerkulka sare, laakiin faa'iido darrada ayaa ah in ay culus tahay mugga, hal qaab, jilicsan, adag si loo gaaro wax soo saarka ballaaran, iyo hooseeyo. waxtarka wax-soo-saarka, qiimaha sarreeya, iwm.
II. Faa'iidada isticmaalka lenska LED
1. Iyadoo aan loo eegin masaafada, laambadda (koobka milicsiga) wax badan kama duwana muraayadda. Marka la eego labbiska, muraayadda ayaa ka sareysa muraayadaha.
2. Saamaynta isticmaalka xagal yar oo lenska LED ah ayaa ka fiican kan laambada sababtoo ah laambada ayaa lagu ururiyey muraayadda (iyo LED lafteeda waa inay lahaataa muraayad), ka dibna waxaa lagu ururiyaa muraayad, taasoo ka dhigaysa kala duwanaansho isku mid ah iftiinka iftiinka. far weyn oo iftiin badan luminaya. Laakiin muraayada LED-ka, baaxadda iyo xagasha iftiinka muraayadda si fiican ayaa loo maarayn karaa.