Ho fapana le likhalase tse tloaelehileng tsa letsatsi kapa lilense tsa photochromic tse fokotsang khanya feela, lilense tsa UV400 li sefa mahlaseli ohle a khanya ka bolelele ba maqhubu a fihlang ho 400 nanometers. Sena se kenyeletsa UVA, UVB le khanya e putsoa ea matla a phahameng a bonahalang (HEV).
Ho nkoa e le likhalase tsa UV, lilense li lokela ho thibela 75% ho isa ho 90% ea leseli le bonahalang 'me li tlameha ho fana ka tšireletso ea UVA le UVB ho thibela 99% ea mahlaseli a kotsi.
Haele hantle, o batla likhalase tsa letsatsi tse fanang ka tšireletso ea UV 400 kaha li fana ka tšireletso e ka bang 100% mahlaseling a UV.
Hlokomela hore ha se likhalase tsohle tsa letsatsi tse nkoang e le likhalase tsa tšireletso tsa UV. Likhalase tsa letsatsi li ka ba le lilense tse lefifi, tseo ho ka nahanoang hore li thibela mahlaseli, empa seo ha se bolele hore meriti e fana ka tšireletso e lekaneng ea UV.
Haeba likhalase tse nang le lilense tse lefifi li sa kenyelle ts'ireletso ea UV, meriti eo e lefifi e mpe mahlong a hau ho feta ho se apare liaparo tse sireletsang ho hang. Hobaneng? Hobane tint e lefifi e ka etsa hore bana ba hau ba atolohe, ba pepese mahlo a hau maboneng a mangata a UV.
Nka tseba joang haeba likhalase tsa ka li na le tšireletso ea UV?
Ka bomalimabe, ha ho bonolo ho tseba hore na likhalase tsa hau kapa lilense tsa photochromic li na le lilense tse sireletsang UV ka ho li sheba feela.
Hape u ke ke ua khetholla boholo ba tšireletso bo ipapisitseng le 'mala oa lense, kaha masela a lense kapa lefifi ha a amane le tšireletso ea UV.
Molemo ka ho fetisisa oo u o behileng ke ho isa likhalase tsa hau lebenkeleng la mahlo kapa setsing sa tlhahlobo ea litsebi. Ba ka etsa tlhahlobo e bonolo likhalaseng tsa hau ho fumana boemo ba tšireletso ea UV.
Kapa khetho e bonolo ke ka ho tsepamisa patlo ea hau ho moetsi ea tsebahalang, le ea hloahloa joalo ka UNIVERSE OPTICAL, le ho khetha likhalase tsa 'nete tsa UV400 kapa lilense tsa photochromic tsa UV400 leqepheng.https://www.universeoptical.com/1-56-aspherical-uv400-q-active-material-photochromic-lens-product/.