Iindondo zelanga zivala ilitha elingathandekiyo ngelixa zikhusela amehlo akho kwimitha ye-UV.Konke oku kunokwenzeka ngenxa yezihluzi zesinyithi "ezikhetha" ukukhanya njengoko kubetha.Iiglasi ezinemibala zinokufunxa ngokukhethiweyo ezinye zeebhanti zamaza ezenza imitha yelanga kuba zisebenzisa umgubo wesinyithi ocoleke kakhulu (intsimbi, ubhedu, i-nickel, njl. njl.).Enyanisweni, xa ukukhanya kubetha i-lens, kuyathotywa ngokusekelwe kwinkqubo ebizwa ngokuba "kukuphazanyiswa okutshabalalisayo."
Oko kukuthi, xa amaza okukhanya athile (kule meko, UV-A, UV-B, kwaye ngamanye amaxesha i-infrared) edlula kwilensi, ayacima enye nenye ngaphakathi kwilensi, ukuya ngasesweni.Ukugqithelana kwamaza okukhanya akuyongozi: iincopho zamaza elinye kunye nemijelo yamaza akufutshane ayacima enye nenye.
Isenzeko sokuphazamiseka okutshabalalisayo sixhomekeke kwisalathiso se-refractive se-lens (oko kukuthi, iqondo apho imitha yokukhanya idlulayo xa idlula kwizinto ezahlukeneyo emoyeni), kwaye kuxhomekeke kubukhulu be-lens.Ngokuqhelekileyo, ubukhulu be-lens abutshintshi kakhulu, ngelixa i-refractive index ye-lens iyahluka ngokomahluko wokubunjwa kweekhemikhali, kwaye izibuko zelanga akufanele zibekwe kwilanga elithe ngqo.
Ixesha lokuposa: Jan-23-2024