Ummandla weSicelo we-UVLED kunye neMiba yoKhuselo

Ubude bemitha ye-ultraviolet buphakathi kokukhanya okubonakalayo kunye ne-X-reyi. Uluhlu lwalo lwamaza luyi-10 ukuya kwi-400nm. Nangona kunjalo, abaninzi abavelisi beefoto zombane bakholelwa ukuba i-wavelength ye-430nm nayo i-ultraviolet. Nangona imitha ye-ultraviolet emininzi ingabonwa ngabantu, isabizwa ngokuba yi-generatory spectrum ye-Violet ethile. I-UV LED yenze inkqubela phambili enkulu kwiminyaka embalwa edlulileyo. Oku ayisosiphumo kuphela senkqubela phambili yetekhnoloji yesixhobo se-UV esiqinileyo, kodwa nangenxa yokwanda kwemfuno yezibane ze-UV ezivelisa iindawo ezingenabungozi. Ubonelelo lwe-UV ye-LED yangoku kwimarike ye-optoelectronics iqulethe uluhlu lwamaza angama-265 ukuya kwi-420nm. Zininzi iindlela zokupakishwa, ezifana nokugqobhoza, ukufakwa komphezulu kunye neCOB. Ijeneretha ye-UV ye-LED ineendlela ezahlukeneyo zokusetyenziswa. Nangona kunjalo, i-generator nganye izimele kwi-wavelength kunye namandla aphumayo. Ngokwesiqhelo, ukukhanya kwe-UV esetyenziswa kwi-LED kunokwahlulwa ibe ngamacandelo amathathu. Zichazwa njenge-UV-A (i-ultraviolet wave ende), i-UV-B (i-ultraviolet wave ephakathi) kunye ne-U V-C (i-ultraviolet wave efutshane). Isixhobo se-UV A senziwe ukusukela ngo-1990. Ezi LED zisetyenziswa ngokubanzi kuvavanyo lwenkohliso okanye ukuqinisekiswa (imali, ilayisenisi yokuqhuba okanye ifayile, njl.njl.). Iimfuno zemveliso yamandla ezi zicelo ziphantsi kakhulu. Olona luhlu lwe-wavelength lungaphakathi kwe-390 ukuya kwi-420N m. Iimveliso ezisezantsi zamaza azifanelekanga izicelo. Ngenxa yokuba le mijikelezo yobomi obude be-LED kunye nokuveliswa lula kwintengiso kunokusetyenziswa njengemithombo eyahlukeneyo yokukhanya kunye neemveliso ze-UV ezinexabiso eliphantsi. Indawo yecandelo le-UVA ye-LED ikhule kakhulu kule minyaka imbalwa idlulileyo. Uninzi loluhlu lwamaza obude (malunga ne-350 390nm) kukuveliswa kwezinto zorhwebo kunye nezoshishino, ezifana ne-adhesive, i-coatings, kunye neenki. Ngenxa yokuphuculwa kokusebenza kakuhle, ukuhla kweendleko, kunye ne-miniaturization, izibane ze-LED zinenzuzo enkulu kuneteknoloji yokuqina kwendabuko, efana ne-mercury okanye izibane ze-fluorescent. Ke ngoko, ikhonkco lokubonelela lihlala likhuthaza ukusetyenziswa kwetekhnoloji ye-LED, okwenza umkhwa wokuqinisa ii-LED ngakumbi nangakumbi. Nangona iindleko zolu luhlu lwamaza ziphezulu kakhulu kune-UV A, inkqubela phambili ekhawulezayo yobugcisa bokuvelisa kunye nokunyuka okuthe gqolo kwesivuno kunciphisa ixabiso ngokuthe ngcembe. Uluhlu olusezantsi lwe-UV A kunye noluhlu oluphezulu lwamaza e-UV B (malunga ne-300-350nm) ziindawo ezisandula ukuthengiswa. Ezi zixhobo zinkulu ezinokuthi zifanelekile kwizicelo ezininzi, kubandakanywa ukunyanga kwe-ultraviolet, i-biomedical, uhlalutyo lwe-DNA, kunye neentlobo ezahlukeneyo zokuva. Kukho ukudityaniswa okubalulekileyo kolu luhlu lwe-UV 3. Ngoko ke, xa ukhetha, akufanele ucinge kuphela ukuba yeyiphi isicelo esifanelekileyo, kodwa kufuneka uqwalasele ukuba yeyiphi isisombululo esineendleko. Ngenxa yokuba amaza aphantsi ahlala ethetha iindleko eziphezulu ze-LED. Uluhlu lwamaza e-UV B kunye ne-UV C (malunga ne-250-300nm) ngumlinganiselo omkhulu kwinqanaba lokuqala. Nangona kunjalo, ihlombe kunye nemfuno yokufaka iimveliso ezinjalo kwinkqubo yokucoca umoya kunye namanzi yomelele kakhulu. Okwangoku, ziinkampani ezimbalwa kuphela ezikwaziyo ukuvelisa ii-LED ze-UV ngaphakathi kolu luhlu lwamaza, kwaye iinkampani ezimbalwa zinokuvelisa iimveliso ezinobomi obaneleyo, ukuthembeka kunye neempawu zokusebenza. Ngoko ke, ixabiso lesixhobo se-UVC/B lisephezulu kakhulu, kwaye kunzima ukusisebenzisa kwezinye izicelo. Umbuzo oqhelekileyo malunga ne-UV LED ngulo: Ngaba baya kuzisa iingozi ezifihlakeleyo zokhuseleko? Njengoko kukhankanyiwe ngasentla, ukukhanya kwe-UV kunamanqanaba amaninzi. Owona mthombo wokukhanya we-UV usetyenziswa kakhulu yibhalbhu emnyama. Le mveliso isetyenziswe amashumi eminyaka. Isetyenziselwa ukuvelisa ukukhanya okanye iziphumo ze-fluorescent kwiipowusta, kunye nokuqinisekiswa kwepeyinti kunye nemali. Ukukhanya okuveliswa zezi bhalbhu ngokuqhelekileyo kuba kwi-spectrum ye-UV A, ekufutshane namaza okukhanya abonakalayo kunye namandla aphantsi. Nangona ukuvezwa okuphezulu kuye kwangqinwa ukuba kunxulumene nomhlaza wolusu kunye nezinye iingxaki ezinokubakho, njengokuguga okukhawulezileyo kolusu, imbonakalo ye-UVA yeyona ikhuselekileyo kwizibane ezithathu ze-UV. Ukukhanya kwe-UV C kunye nobuninzi be-UV B ukukhanya zisetyenziselwa ukuvala inzala kunye nokubulala iintsholongwane. La maza okukhanya ayingozi kuphela kwii-microorganisms. Ezi zibane ze-LED kufuneka zihlale zivaliwe, kwaye akufuneki zijonge ngqo emehlweni e-ze, nokuba ikhanya kancinane kakhulu. Ukuvezwa ekukhanyeni kwala maza kunokubangela umhlaza wolusu kunye nokulahleka kombono okwethutyana okanye okusisigxina okanye ukulahleka.