Inkambu Yesicelo ye-UVLED kanye Nezindaba Zokuvikela

Ubude begagasi bemisebe ye-ultraviolet buphakathi kokukhanya okubonakalayo ne-X-ray. Ububanzi bayo be-wavelength buyi-10 kuye ku-400nm. Kodwa-ke, abakhiqizi abaningi be-photoelectric bakholelwa ukuthi ubude be-wavelength be-430nm bubuye bube yi-ultraviolet. Nakuba imisebe ye-ultraviolet eminingi ingabonwa abantu, isaqanjwa nge-generatory spectrum ye-Violet ethile. I-UV LED yenze inqubekelaphambili enkulu eminyakeni embalwa edlule. Lokhu akuwona kuphela umphumela wenqubekelaphambili yezobuchwepheshe yedivayisi ye-UV eqinile, kodwa futhi ngenxa yokwanda kwesidingo sezibani ze-UV ezikhiqiza izindawo ezingenabungozi. Ukunikezwa kwe-UV LED kwamanje emakethe ye-optoelectronics kuqukethe ububanzi be-wavelength obungu-265 kuya ku-420nm. Ziningi izinhlobo zokupakisha, njengokubhoboza, ukufaka ingaphezulu kanye ne-COB. Ijeneretha ye-UV LED inezinhlobonhlobo zezicelo ezihlukile. Nokho, ijeneretha ngayinye izimele kubude begagasi namandla okukhiphayo. Imvamisa, ukukhanya kwe-UV okusetshenziswe ku-LED kungahlukaniswa izinkambu ezintathu. Achazwa ngokuthi i-UV-A (i-ultraviolet wave wave), i-UV-B (i-ultraviolet wave ephakathi) kanye ne-U V-C (i-ultraviolet wave wave). Idivayisi ye-UV A yakhiqizwa kusukela ngo-1990. Lawa ma-LED ngokuvamile asetshenziswa ekuhlolweni komgunyathi noma ukuqinisekiswa (imali, ilayisense yokushayela noma ifayela, njll.). Izidingo zokuphuma kwamandla zalezi zinhlelo zokusebenza ziphansi kakhulu. Ibanga langempela le-wavelength lingaphakathi kuka-390 kuya ku-420N m. Imikhiqizo ye-wavelength ephansi ayizilungele izinhlelo zokusebenza. Ngoba le mijikelezo yempilo ende yama-LED kanye nokwenza lula emakethe kungasetshenziswa njengemithombo yokukhanya ehlukahlukene kanye nemikhiqizo eshibhe kakhulu ye-UV. Inkambu yengxenye ye-UVA LED ikhule kakhulu eminyakeni embalwa edlule. Iningi lalolu hlu lwamaza amaza (cishe 350 390nm) ukukhiqizwa kwezinto ezithengiswayo nezimboni, ezifana nokunamathiswa, okokunamathela, noyinki. Ngenxa yokuthuthukiswa kokusebenza kahle, ukuncipha kwezindleko, kanye nokwenza kancane, izibani ze-LED zinezinzuzo ezinkulu kunobuchwepheshe bokuqinisa obuvamile, obufana ne-mercury noma amalambu e-fluorescent. Ngakho-ke, uchungechunge lokuhlinzeka luhlala lukhuthaza ukusetshenziswa kobuchwepheshe be-LED, okwenza umkhuba wokuqinisa ama-LED ubonakale nakakhulu. Nakuba izindleko zalolu hlu lwamaza amaza ziphezulu kakhulu kune-UV A, inqubekela phambili esheshayo yobuchwepheshe bokukhiqiza kanye nokwenyuka okuqhubekayo kwesivuno kwehlisa kancane kancane intengo. I-UV A ephansi kanye nobubanzi obuphezulu be-UV B (cishe 300-350nm) yizindawo ezisanda kuthengiswa. Lawa madivaysi amakhulu anamandla afanele ukusetshenziswa okuningi, okuhlanganisa ukuphulukiswa kwe-ultraviolet, i-biomedical, ukuhlaziywa kwe-DNA, nezinhlobo ezahlukene zezinzwa. Kukhona ukugqagqana okubalulekile kulawa ma-3 UV spectral range. Ngakho-ke, lapho ukhetha, akumelwe ucabangele kuphela ukuthi yisiphi isicelo esifanele kakhulu, kodwa futhi udinga ukucabangela ukuthi yisiphi isisombululo esingabizi kakhulu. Ngoba amaza aphansi ngokuvamile asho izindleko eziphezulu ze-LED. I-UV B ne-UV C ububanzi begagasi (cishe u-250-300nm) ziyizinga elikhulu esigabeni sokuqala. Nokho, isasasa nesidingo sokusebenzisa imikhiqizo enjalo ohlelweni lokuhlanza umoya namanzi kunamandla kakhulu. Njengamanje, izinkampani ezimbalwa kuphela ezinekhono lokukhiqiza ama-LED e-UV ngaphakathi kwalolu hlu lwamaza, ngisho nezinkampani ezimbalwa zingakhiqiza imikhiqizo enempilo eyanele, ukwethembeka kanye nezici zokusebenza. Ngakho-ke, izindleko zedivayisi ye-UVC/B zisaphezulu kakhulu, futhi kunzima ukuzisebenzisa kwezinye izinhlelo zokusebenza. Umbuzo ojwayelekile mayelana ne-UV LED uthi: Ingabe bazoletha izingozi zokuphepha ezifihliwe? Njengoba kushiwo ngenhla, ukukhanya kwe-UV kunamazinga amaningi. Umthombo wokukhanya we-UV osetshenziswa kakhulu isibani esimnyama. Lo mkhiqizo ususetshenziswe amashumi eminyaka. Isetshenziselwa ukukhiqiza ukukhanya noma imiphumela ye-fluorescent yamaphosta, kanye nokuqinisekiswa komdwebo kanye nemali. Ukukhanya okukhiqizwa yilawa malambu ngokuvamile kuba ku-spectrum ye-UV A, eseduze namaza okukhanya abonakalayo namandla aphansi. Nakuba ukuchayeka okuphezulu kufakazelwe ukuthi kuhlobene nomdlavuza wesikhumba nezinye izinkinga ezingaba khona, njengokuguga kwesikhumba ngokushesha, i-UVA spectrum iphephe kakhulu ekukhanyeni okuthathu kwe-UV. I-UV C kanye nokukhanya okuningi kwe-UV B kusetshenziselwa ikakhulukazi ukuvalwa inzalo nokubulala amagciwane. Lawa maza okukhanya awagcini nje ngokuba yingozi kuma-microorganisms. Lezi zibani ze-LED kufanele zihlale zivaliwe, futhi akufanele zibheke ngqo emehlweni anqunu, ngisho noma kukhanya kancane kakhulu. Ukuvezwa ekukhanyeni kwalawa maza obude kungase kubangele umdlavuza wesikhumba kanye nokulahlekelwa umbono wesikhashana noma unomphela noma ukulahlekelwa.