1.59 Ilensi yePolycarbonate yePC eqhubekayo
Kutheni iiLensi zePolycarbonate?
I-Polycarbonate yinto enokumelana nempembelelo kakhulu.Yaphuhliswa ngeminyaka yee-1970s ukwenzela usetyenziso lwe-aerospace kubandakanya iivisor ze-astronaut helmet kunye ne-windshields yesiphekepheke, ukuba akukho nto yimbi, intle kakhulu...
Ngeminyaka yoo-1980 i-polycarbonate yayisetyenziselwa iilensi njengoko yayincinci, ilula kwaye ikwazi ukumelana neempembelelo kuneglasi.Kule mihla ngumgangatho weglasi zokhuseleko, iiglasi zabantwana kunye nezibuko zemidlalo, ngenxa yokumelana kwayo okugqwesileyo.
I-Polycarbonate yi-thermoplastic eqala inkqubo yokwenza iilensi njengeepellets ezibunjwe kwinkqubo ebizwa ngokuba yinaliti yokubumba.Ngethuba le nkqubo iipellets zixinzelelwa phantsi koxinzelelo oluphezulu kakhulu kwi-lens molds, emva koko zipholile ukwenza i-lens yeplastiki eqinile.
Kunye nokuqina kwayo, iilensi zepolycarbonate ngokwendalo zivimba i-100% yemitha yelanga ye-UV ngaphandle kwesidingo sokugquma, okuthetha ukuba amehlo akho akhuselwe ngokufanelekileyo.Ezi lens zikwanikezelwa kuluhlu olubanzi lweenketho (ezifana neelensi eziqhubekayo) kunezinye izixhobo zelensi ezinempembelelo ephezulu.
Ngelixa i-polycarbonate ngokungathandabuzekiyo isenza ilensi enempembelelo yokwenyani, ukuqina kwayo kuza kwixabiso.I-Polycarbonate inomfanekiso we-lens kakhulu kuneplastiki okanye iglasi, okuthetha ukuba i-anti-reflective coating ingafuneka.Ngaphaya kwale polycarbonate inexabiso le-Abbe elingama-30 nje, nto leyo ethetha ukuba ibonelela ngomgangatho ongemhle wokukhanya kwizinto ebekuxoxwe ngazo ngaphambili.
Iilensi zePresbyopia-Inkqubela phambili
Ukuba ungaphezulu kweminyaka engama-40 kwaye unobunzima bokubona kwakho kufutshane kwaye ufikelele engalweni, amathuba okuba ube ufumana i-presbyopia.Iilensi eziqhubela phambili sesona sisombululo sethu kwi-presbyopia, sikunika umbono obukhali kuwo nawuphi na umgama.
Ziziphi iiNzuzo zeeLensi eziqhubela phambili?
Njengeelensi ze-bifocal, iilensi ezininzi eziqhubekayo zenza ukuba umsebenzisi abone ngokucacileyo kuluhlu lwemigama eyahlukeneyo ngelensi enye.Ilensi eqhubekayo itshintsha ngokuthe ngcembe amandla ukusuka phezulu kwelensi ukuya ezantsi, inika inguqu egudileyo ukusuka kumbono womgama ukuya kumbono ophakathi / wekhompyuter ukuya kumbono okufutshane / wokufunda.
Ngokungafaniyo nee-bifocals, iilensi ezininzi eziqhubekayo azinamigca okanye amacandelo ahlukeneyo kwaye zinenzuzo yokubona ngokucacileyo kuluhlu olukhulu lwemigama, zingakuthinteli kwimigama emibini okanye emithathu.Oku kubenza babe lukhetho oludumileyo kubantu abaninzi.
Ungatsho njani ukuba iiLensi eziqhubela phambili zikulungele?
Nangona i-lens eqhubekayo ikuvumela ukuba ubone imigama ekufutshane kunye nekude ngokucacileyo, ezi lens ayilona khetho lufanelekileyo kumntu wonke.
Abanye abantu abakhe baziqhelanise nokunxiba ilensi eqhubekayo.Ukuba oku kuyenzeka kuwe, unokufumana isiyezi esingaguqukiyo, iingxaki zokuqonda okunzulu, kunye nokuphazamiseka kwe-peripheral.
Ekuphela kwendlela yokwazi ukuba iilensi eziqhubekayo ziya kusebenza kuwe kukuzama kwaye ubone ukuba amehlo akho ahlengahlengisa njani.Ukuba awuqhelani noko emva kweeveki ezimbini, ugqirha wakho wamehlo unokufuna ukulungisa amandla kwilensi yakho.Ukuba iingxaki ziyaqhubeka, i-bifocal lens inokuba bhetele kuwe.
