Izikhanyisi ze-Optical, ezaziwa nangokuthiukukhanya okukhanyayo(ama-OBA), ayizinhlanganisela ezisetshenziselwa ukuthuthukisa ukubukeka kwezinto ngokukhuphula ubumhlophe nokukhanya kwazo. Asetshenziswa kakhulu ezimbonini ezahlukahlukene, kufaka phakathi izindwangu, amaphepha, okokuhlanza kanye namapulasitiki. Kulesi sihloko, sizohlola ukuthi yiziphi izibani ezikhanyayo, ukuthi zisebenza kanjani, kanye nezinhlelo zokusebenza ezihlukahlukene.

Izibani ezikhanyayo zisebenza ngokumunca ukukhanya kwe-ultraviolet (UV) futhi ziphinde zikukhiphe njengokukhanya okubonakalayo ku-spectrum eluhlaza okwesibhakabhaka-violet. Lesi simo sibizwa ngokuthi i-fluorescence. Ngokuguqula imisebe ye-UV ibe ukukhanya okubonakalayo, izinto ezikhanyayo ezikhanyayo zithuthukisa ukukhanya kanye nezakhiwo ze-fluorescent zezinto zokwakha, ziyenze ibonakale ikhanya futhi imhlophe.

Ukusetshenziswa okuvamile kwama-optical brighteners kusembonini yendwangu. Ezindwangu, izikhanyisi ze-optical zengezwa ezindwangu kanye nemicu ukuze kuthuthukiswe ukubukeka kwazo okubonakalayo. Uma izingubo noma izindwangu eziphathwe ngezinto ezikhanyayo zichayeka ekukhanyeni kwelanga noma ekukhanyeni okwenziwe, zimunca imisebe ye-UV ekhona futhi zikhiphe ukukhanya okubonakalayo, okwenza indwangu ibonakale imhlophe futhi ikhanya. Lo mphumela ufiseleka kakhulu ezindwangu ezimhlophe noma ezinemibala ekhanyayo, ezithuthukisa ukuhlanzeka kwazo nokusha.

Enye imboni esebenzisa kakhulu izibani ezikhanyayo imboni yephepha. Izikhanyisi ze-Optical zengezwa phakathi nenqubo yokukhiqiza iphepha ukuze kwandiswe ukukhanya kwalo futhi libonakale limhlophe. Ngokwandisa ubumhlophe bephepha,ukukhanya okukhanyayoukusiza ukukhiqiza amaphrinti nezithombe zekhwalithi ephezulu. Zibuye zisize ekunciphiseni inani likayinki elidingekayo ekunyatheliseni, okuphumela ekongeni kwezindleko zezinkampani ezinyathelisayo kanye nabathengi.

Izikhanyisi ze-Optical nazo zivame ukutholakala ezindaweni zokuhlanza izingubo. Zengezwa kumafomula okuhlanza ukwenza okumhlophe kubonakale kumhlophe nemibala igqamile. Lapho izingubo ziwashwa ngezinto zokuhlanza eziqukethe izinto ezikhanyayo ezikhanyayo, lezi zinhlanganisela zifakwa phezu kwendwangu, zidonsa imisebe ye-ultraviolet futhi zikhiphe ukukhanya okuluhlaza okwesibhakabhaka, zifihla umbala ophuzi futhi zithuthukise ukugqama okuphelele kwezingubo. Lokhu kugcina izingubo zibukeka zihlanzekile futhi zizintsha, ngisho nangemva kokuwashwa kaningi.

Ngaphezu kwalokho,ukukhanya okukhanyayoasetshenziswa futhi ekwenzeni ipulasitiki. Zengezwa epulasitiki ngesikhathi senqubo yokukhiqiza ukuze kuthuthukiswe ukubukeka kwayo futhi kubonakale kukhangayo. Imikhiqizo yepulasitiki efana namabhodlela, iziqukathi nezinto zokupakisha eziphathwe ngezikhanyisi ze-optical zibonakala zikhanya futhi zikhanga kakhulu emashalofini esitolo. Ukusebenzisa izibani ezikhanyayo kumapulasitiki kungasiza futhi ukufihla noma yikuphi ukungapheleli noma ukuphuzi okungavela ngokuhamba kwesikhathi ngenxa yokuchayeka elangeni noma izici zemvelo.

Kafushane, ama-optical brighteners ayinhlanganisela esetshenziswa kabanzi ezimbonini ezahlukahlukene ukuthuthukisa ubumhlophe nokukhanya kwezinto. Ngokumunca ukukhanya kwe-ultraviolet nokuyikhipha kabusha njengokukhanya okubonakalayo, izikhanyisi ze-optical zisiza ukuthuthukisa ukubukeka kwezindwangu, amaphepha, okokuhlanza namapulasitiki. Zibalulekile ukuze kuzuzwe ubuhle kanye nezimfanelo zokubona ezidingekayo kulezi zinto. Ukuthi ukwenza izindwangu zibukeke zihlanzekile, ukuphrinta kwephepha kubukeka kubukhali, noma amapulasitiki abukeka ekhanga kakhulu, izinto ezikhanyayo ezikhanyayo zidlala indima ebalulekile ekuthuthukiseni umuzwa obonakalayo wonkana.