Itekhnoloji ye-LED ene-spectrum epheleleyo iye yaba yi-buzzword kwiminyaka yakutshanje, ngakumbi xa kuziwa ekulinganiseni ukukhanya kwelanga kunye nokuphucula umgangatho wokukhanya. Kweli nqaku, siza kuntywila kwihlabathi lee-LED ezigcweleyo, ukuba zeza njani na, zenziwe njani, nalapho zisetyenziswa khona. Siza kuthetha malunga nendlela onokuziphumeza ngayo ii-LED ezigcweleyo kunye neendidi ezahlukeneyo ze-chip kunye ne-phosphor, imiceli mngeni yokuzenza, kunye nendlela ezibonakala ngayo kwiimveliso ezinjengezibane zedesika, ukukhanya kwamashishini, kunye nezibane zokukhula kwezityalo. Okokugqibela, siza kuphendula umbuzo, "Ngaba ufuna ngokwenene isibane esipheleleyo?" kwaye “Njani ukukhanya okugcweleyo uyakunceda kwindawo okuyo?”
Inkcazo yee-LED "ze-Full-Spectrum".
Xa sithetha malunga nee-LED ezidumileyo namhlanje, kubalulekile ukucacisa ukuba kuthetha ukuthini "i-full-spectrum". Okwenyani "i-full-spectrum" ibhekiselele ekukhanyeni okuphuma kumthombo ogubungela yonke i-spectrum ukusuka kwi-ultraviolet (UV), ukukhanya okubonakalayo, ukuya kwi-infrared (IR), ukulinganisa i-spectrum epheleleyo yokukhanya kwelanga (njengoko kubonisiwe kuMfanekiso 1).
Lo ngowona “uwonke-wonke” uqukayo ofumaneka kwindalo. Nangona kunjalo, "i-full-spectrum" ye-LED abantu abaninzi abathetha ngayo namhlanje yinkcazo encinci. Kwimeko ye-LED, "i-full-spectrum" ibhekisela ekukhanyeni okukhutshwa ngaphakathi koluhlu lokukhanya olubonakalayo olufana ngokusondeleyo nokukhanya kwelanga kuloluhlu olufanayo (njengoko kuboniswe kuMfanekiso 2).
Izixhobo ze-ultraviolet kunye ne-infrared azibandakanyiwe, ngakumbi ukwenza ii-LED ezigcweleyo zibe nokwenzeka ngakumbi kwimveliso yobuninzi. Ukongeza i-UV kunye ne-IR kuya kwenza nzima yonke inkqubo yokupakisha kunye nokusetyenziswa, ukwenza imveliso enkulu kunye nokusetyenziswa okusebenzayo phantse akunakwenzeka. Nangona kuphela i-spectrum ebonakalayo ibandakanyiwe, akulula ukufezekisa ii-LED ezigcweleyo. Umzekelo, ukufikelela phezulu isalathiso sombala wonikezelo (CRI) kufutshane ne-100, iinkampani ezininzi ziyasokola ukuphucula i-CRI ukusuka kwi-96 ukuya kwi-98, singasathethi ke ngokufezekisa i-99 okanye ngaphezulu.
Umzobo 1: I-spectrum epheleleyo yokukhanya kwelanga (280nm-4000nm)
Umzobo 2: Ukukhanya kwelanga phakathi koluhlu olubonakalayo (380nm-780nm)
Indlela yokuPhumelela ii-LED ezipheleleyo ze-Spectrum
Ngokwethiyori, zimbini iindlela eziphambili zokufezekisa ii-LED ezigcweleyo: enye isebenzisa iitshiphusi kwaye enye isebenzisa iiphosphors. Kwicala le-chip, kukho iindlela ezimbini eziphambili: enye yi-chip enomdla kwi-phosphor, kwaye enye isebenzisa i-chip yodwa ngaphandle kwephosphor. Kwicala le-phosphor, kufuneka udibanise i-phosphors kunye ne-chip, kwaye kufuneka ukhethe ukukhutshwa okwahlukileyo kunye no-excitation wavelengths yokudibanisa. Lilonke, kukho iindlela ezine eziphambili zokufezekisa ii-LED ezigcweleyo:
1. I-single-band Blue Chip I-Phosphors Evuyisayo
Le ndlela ifana nokupakishwa kwe-LED eqhelekileyo, kodwa iiphosphors ezininzi zongezwa (umzekelo, eluhlaza, tyheli, obomvu, okanye orenji, cyan, blue). Nangona oku kunokuvelisa ukukhanya kufutshane ne-spectrum epheleleyo, kusekho ukukhanya okuqaqambileyo okuluhlaza. Ngaphaya koko, ukusebenza kakuhle kweephosphors ezinjengecyan kunye noluhlaza okwesibhakabhaka kuphantsi, kwaye ukukhanya kuluhlu lwe-470-510nm kunokungabikho.
2. I-Dual-band okanye i-Triple-band yeBlue Chip evuyisayo yePhosphors
Le ndlela iphucula indlela yebhendi enye ngokusebenzisa ibhendi ephindwe kabini okanye i-triple-band blue chip ukonwabisa iiphosphors kubude bamaza ahlukeneyo. Ii-chips ezimbini-band ngokuqhelekileyo zisebenzisa iindidi ezimbini: 430-450nm kunye ne-460-480nm, ngelixa iitshiphusi ze-triple-band zisebenzisa ezintathu: 430-440nm, 440-460nm, kunye ne-460-480nm. Oku kuvumela ukuguquguquka okungakumbi ekudibaniseni iitshiphusi kunye ne-phosphors ukuze zihambelane kangcono ne-spectrum yokukhanya kwelanga (njengoko kubonisiwe kwi-Figure 3). Ngale ndlela, i-CRI inokugqithisa i-98. Nangona kunjalo, le ndlela idinga iindidi ezininzi ze-phosphors, okwenza kube nzima ukuqinisekisa ukuhambelana kunye nokuzinza ngexesha lokuvelisa ngobuninzi.
Umzobo 3: I-Spectrum ye-dual-band kunye ne-triple-band blue light-spectrum egcweleyo ii-LEDs (ukukhangela)
3. I-UV Chip I-Phosphors Evuyisayo
Le ndlela inokukhanya okuphantsi kokukhanya. Esona sizathu sesokuba uninzi lweephosphors ezithengiswayo zenzelwe ukusebenza ngeetshiphusi eziluhlaza, hayi iitshiphusi ze-UV, ngoko ke ukusebenza kwabo kochulumanco kusezantsi kakhulu kuluhlu lwe-UV. Ukongeza, iichips ze-UV zihlala zisuka kwi-385-405nm, nazo ezisebenza ngokuphantsi. Nangona iitshiphusi ze-UV zinokuxelisa ngokusondeleyo ukukhanya kwelanga kwaye zithintele ubukho bokukhanya okuluhlaza okufutshane kobude obufutshane (njengoko kubonisiwe kuMfanekiso 4), le ndlela inezithintelo. Umzekelo, iichips ze-UV zibangela ukuthotywa okubaluleke ngakumbi kweephosphors ngokuhamba kwexesha, okukhokelela ekutshintsheni kombala kunye nemiba yobushushu bombala. Ukukhanya kwe-UV nako konakalise izinto eziphilayo ezifana ne-encapsulants, ukunciphisa Ubomi be-LED.
Umzobo 4: I-Spectrum ye-UV ye-LED egcweleyo (ukukhangela)
4. Indlela yokudibanisa i-Multi-chip
Le ndlela idibanisa iitshiphusi eziphuma luhlaza, cyan, eluhlaza, tyheli, kunye nokukhanya okubomvu ukufezekisa i-spectrum epheleleyo. Ngelixa oku kunokusebenza kwithiyori, ayiqhelekanga ukusetyenziswa ngenxa yemingeni emininzi. Kolunye, iichips zikhupha ukukhanya kunye ne-bandwidth emxinwa, okwenza kube nzima ukufezekisa i-spectrum ebanzi ebonelelwa yi-phosphors. Ukongeza, ukusebenza kakuhle kweetshiphusi ezinemibala eyahlukeneyo kuyahluka kakhulu, okwenza kube nzima ukulinganisa ukuphuma kokukhanya. Ngokuhamba kwexesha, utshintsho lwemibala kunye notshintsho lweqondo lobushushu lunokwenzeka ngenxa yokwahluka kwamazinga okuthotywa kweechips.
Ukubonelela ngothelekiso olucacileyo, le theyibhile ilandelayo ishwankathela iindlela ezine zokufikelela kwii-LED ezipheleleyo:
| indlela yokwenza | Ukusebenza kakuhle | CRI | ixabiso | Ukupakisha Ubunzima | Ukusebenza ngokubanzi | Uhlobo lweNdlela |
| Single-band Blue Chip Phosphors Imincili | phezulu | Phakathi | low | low | Kulungile | I-Chip Ivuyisa iiPhosphors |
| I-Dual/Triple-band Blue Chip Iphosphors evuyisayo | phezulu | phezulu | Phakathi | Phakathi | Kakuhle kakhulu | I-Chip Ivuyisa iiPhosphors |
| UV Chip Phosphors Eyonwabisayo | low | phezulu | phezulu | low | Poor | I-Chip Ivuyisa iiPhosphors |
| Multi-chip Umdibaniso | low | phezulu | phezulu | low | Poor | IChip (Inokongeza iPhosphors) |
Usetyenziso lwe-Full-Spectrum LEDs
Ngoku ekubeni sizigubungele iindlela zokufezekisa ii-LED ezipheleleyo, singazisebenzisa njani ngempumelelo? Olunye uqwalaselo oluphambili lubushushu bombala. Ukukhanya kwelanga kuyatshintsha imini yonke kunye namaxesha onyaka. Umzekelo, i Iqondo lobushushu ekuphumeni kwelanga malunga ne-2000K, emini malunga ne-5000K, kwaye ukutshona kwelanga malunga ne-2300K. Ke ngoko, ii-LED ezigcweleyo kufuneka ziyilwe ukulinganisa ukukhanya kwelanga okuhambelanayo kubushushu bemibala eyahlukeneyo, enokufezekiswa ngokusebenzisa iindlela ezichazwe ngasentla.
Ngokusekwe kule ngcaciso ingentla, ii-LED ezigcweleyo zinokusetyenziswa phantse kuyo nayiphi na into yokukhanyisa esemgangathweni, njengokukhanya kwendlu, ukukhanya kwangaphandle, izibane zamashishini, izibane zedesika, imicu ye-LED egcweleyo kwaye ukukhanya kwezityalo. Izicelo ezithile zixhomekeke kakhulu kwixabiso kunye nokwamkelwa kwabathengi. Okwangoku, izibane zedesika zezona zicelo zixhaphakileyo, zihlala zithengiswa njengokukhanya okuluhlaza okwesibhakabhaka, ukukhusela amehlo, kunye nobushushu bombala obunokulungiswa. Ezi zibane zinexabiso eliphezulu kunezibane eziqhelekileyo. Ukuthelekiswa phakathi kwemigangatho yelizwe laseTshayina kunye "nesatifikethi esigcweleyo" iimfuno ze-CRI ziboniswe kwiThebhile 2. Njengoko kuboniswe kwitheyibhile, umgangatho wesizwe waseTshayina wezibane zedesika unokuhlangabezana ngokulula nemithombo yokukhanya ye-LED eqhelekileyo, ngelixa i-spectrum epheleleyo. isiqinisekiso sifuna ukusebenza okungaphezulu.
Itheyibhile 2: Uthelekiso lwe-CRI kwizibane zeDesika
| umgangatho | Isiqinisekiso esipheleleyo seSpectrum |
| Inani elisemgangathweni kunye negama | I-GB/T 9473-2022 “IiMfuno zokuSebenza zokuFunda nokuBhala izibane” |
| Iimfuno ze-CRI | I-CRI ngokubanzi: Ra ≥ 80 |
| I-CRI ekhethekileyo: R9 > 0 |
isiphelo
Ngokusekelwe kwintshayelelo engentla kwitekhnoloji ye-LED egcweleyo, thina, njengeengcali zeshishini, kufuneka sicinge ngoku: Ngaba umthombo wokukhanya okhoyo ngoku "ogcweleyo" yinto efunwa ngabantu ngokwenene? Nceda uzive ukhululekile ukundithumelela umyalezo okanye ushiye amagqabantshintshi ngengxoxo ethe kratya!
