Likhalase tsa letsatsi li thibela mahlaseli a kotsi ha li ntse li sireletsa mahlo a hau mahlaseling a UV.Sena sohle se ka khoneha ka lebaka la li-filters tsa phofo tsa tšepe tse "khethang" leseli ha li ntse li otla.Likhalase tse mebala-bala li ka khetha mefuta e meng ea maqhubu a bolelele ba mahlaseli a letsatsi hobane li sebelisa phofo e ntle haholo ea tšepe (tšepe, koporo, nickel, joalo-joalo).Ha e le hantle, ha khanya e otla lense, e fokotseha ho latela mokhoa o bitsoang "ts'itiso e senyang."
Ka mantsoe a mang, ha maqhubu a itseng a khanya (tabeng ena, UV-A, UV-B, 'me ka linako tse ling infrared) a feta ka har'a lense, a hlakolana ka hare ho lense, ho ea ka leihlong.Ho kopana ha maqhubu a khanya ha ho kotsi: litlhōrō tsa leqhubu le le leng le likotopo tsa maqhubu a haufi lia hlakola.
Ketsahalo ea tšitiso e senyang e itšetlehile ka index ea refractive ea lense (ke hore, tekanyo eo mahlaseli a khanyang a khelohang ho eona ha a feta linthong tse fapaneng moeeng), hape ho itšetlehile ka botenya ba lense.Ka kakaretso, botenya ba lense ha bo fetohe haholo, athe index ea refractive ea lense e fapana ho ea ka phapang ea metsoako ea lik'hemik'hale, 'me likhalase tsa letsatsi ha lia lokela ho pepesetsoa letsatsi le tobileng.
Nako ea poso: Jan-23-2024