Likhalase tsa letsatsi esale e le sebetsa se tlamehang ho ba le feshene ea lehlabula le sebopeho sa concave kelellong ea motho e mong le e mong.'Me boholo ba nako re nahana hore likhalase tsa letsatsi li lokela ho apesoa feela lehlabula.Empa re tlameha ho tseba hore mosebetsi o ka sehloohong oa likhalase tsa letsatsi ke ho thibela tšenyo ea mahlaseli a ultraviolet, 'me mahlaseli a kotsi a teng selemo ho pota.E le hore re sireletse mahlo a rōna, ho hlakile hore re lokela ho roala likhalase tsa letsatsi selemo ho pota.Mahlaseli a UV a ka re baka ka mor'a tsohle.Conjunctivitis, keratitis, lera la mahlo, haholo-holo ho batho ba tsofetseng ba nang le lera la mahlo li ntse li eketseha ka palo lilemong tsa morao tjena.'Me lilemo tsa ho qala li atisa ho fokotseha.Kahoo u ka e apara mariha.Ligalase tsa letsatsi le tsona li ka thibela moea le ho fokotsa tšenyo ea lehlabathe le majoe mahlong a hau.ea ho qetela.Likhalase tsa letsatsi li ka fokotsa haholo khanya ea mahlaseli a kotsi a tsoang letsatsing litseleng tse lehloa.Lehloa le ka bonahatsa ho feta 90% ea mahlaseli a kotsi a letsatsi.’Me haeba re hlobotse, joale palo ena e ngata ea ultraviolet UVA e tla etsa hore letlalo la rōna le tsofale, ’me UVB le UVC li tla khanya mahlong a rōna, li fihle cornea ho senya mahlo.Ka hona, re boetse re lokela ho roala likhalase tsa letsatsi ho sireletsa mahlo a rōna mariha.
Joale re lokela ho reka likhalase tsa letsatsi joang?
Pele ho tsohle, re khetha 'mala o ka holimo.Ha ho bapisoa le lehlabula, khanya e tla ba lefifi le ho feta mariha.Kahoo leka ho khetha mebala e khanyang ha u khetha.
1. Lense e putsoa
E nka mahlaseli a infrared le 98% ea mahlaseli a ultraviolet, ha a fetole 'mala oa pele oa sebaka,' mala o sa nke lehlakore, o loketseng ho sebelisoa ke batho bohle.
2. Lilense tse pinki le tse bobebe tse pherese
E monya 95% ea mahlaseli a UV.Ho khothalletsoa hore basali ba atisang ho roala likhalase bakeng sa ho lokisa pono ba khethe lilense tse khubelu, tse nang le ho monya hantle ha mahlaseli a ultraviolet.
3. Lense e sootho
E monya 100% ea mahlaseli a UV, e sefa khanya e ngata ea boputsoa, e ntlafatsa phapano ea pono le ho hlaka, 'me ke ntho e tlang pele ho batho ba lilemo tse mahareng le maqheku.ke khetho ea mokhanni.
4. Lilense tse putsoa tse khanyang
E ka apesoa ha u bapala lebopong la leoatle.Lilense tse putsoa ha lia lokela ho qojoa ha re khanna hobane li ka etsa hore ho be thata ho rōna ho khetholla mebala ea mabone a sephethe-phethe.
5. Lense e tala
E khona ho monya mahlaseli a infrared le 99% ea mahlaseli a ultraviolet, ea eketsa khanya e tala e fihlang mahlong, 'me ea etsa hore batho ba ikutloe ba le ba hloekileng ba bile ba phutholohile.E loketse batho ba atisang ho ba le mokhathala oa mahlo.
6. Lense e mosehla
E ka monya 100% ea mahlaseli a ultraviolet mme ea monya boholo ba leseli le leputsoa, e leng se ka ntlafatsang tekanyo ea phapang.
Nako ea poso: Jul-09-2022