Lilense tsa khalase.
Matsatsing a pele a ho lokisa pono, lilense tsohle tsa khalase ea mahlo li ne li entsoe ka khalase.
Ntho e ka sehloohong ea lilense tsa khalase ke khalase ea optical.Lenane la refractive le phahame ho feta la lense ea resin, kahoo lense ea khalase e tšesaane ho feta lense ea resin ka matla a tšoanang.Lenane la refractive la lense ea khalase ke 1.523, 1.60, 1.70, 1.80, 1.90.Lilense tsa khalase li na le thepa e ntle ea phetisetso le mechanochemical: index ea kamehla ea refractive le thepa e tsitsitseng ea 'mele le ea lik'hemik'hale.
Le hoja lilense tsa khalase li fana ka li-optics tse ikhethang, li boima 'me li ka robeha habonolo, tse ka bakang kotsi e tebileng mahlong kapa esita le tahlehelo ea leihlo.Ka mabaka ana, lilense tsa khalase ha li sa sebelisoa haholo bakeng sa likhalase tsa mahlo.

Lilense tsa polasetiki.
● 1.50 CR-39
Ka 1947, Khampani ea Armorlite Lens e California e ile ea hlahisa lilense tsa pele tsa khalase ea mahlo ea polasetiki e bobebe.Lilense li entsoe ka polima ea polasetiki e bitsoang CR-39, khutsufatso ea "Columbia Resin 39," hobane e ne e le tlhahiso ea 39 ea polasetiki e phekotsoeng ka mocheso e ntlafalitsoeng ke PPG Industries mathoasong a bo-1940.
Ka lebaka la boima ba eona bo bobebe (hoo e ka bang halofo ea boima ba khalase), theko e tlaase le litšoaneleho tse ntle tsa optical, polasetiki ea CR-39 e ntse e le thepa e ratoang bakeng sa lilense tsa mahlo le kajeno.
● 1,56 NK-55
Lilense tse theko e phahameng ka ho fetisisa tsa Index tse phahameng ebile li thata haholo ha li bapisoa le CR39.Kaha thepa ena e haufi le 15% e tšesaane le 20% e bobebe ho feta 1.5 e fana ka khetho ea moruo bakeng sa bakuli ba hlokang lilense tse fokolang.NK-55 e na le boleng ba Abbe ba 42 e etsang hore e be khetho e ntle bakeng sa litaelo pakeng tsa -2.50 le +2.50 dioptres.
● Lilense tsa polasetiki tsa boleng bo phahameng
Lilemong tse 20 tse fetileng, ka lebaka la tlhokahalo ea likhalase tsa mahlo tse tšesaane, tse bobebe, bahlahisi ba bangata ba lilense ba hlahisitse lilense tsa polasetiki tsa boleng bo holimo.Lilense tsena li tšesaane ebile li bobebe ho feta lilense tsa polasetiki tsa CR-39 hobane li na le index e phahameng ea refraction hape li ka ba le matla a khoheli a tlase.
MR™ Series ke lense ea premium optical e entsoeng ke Japane Mitsui Chemicals e nang le index e phahameng ea refractive, boleng bo phahameng ba Abbe, matla a khoheli a tlase le ho hanyetsa tšusumetso e phahameng.
MR™ Series e loketse ka ho khetheha lilense tsa mahlo 'me e tsejoa e le lisebelisoa tsa pele tsa thiourethane tse nang le index e phahameng ea lense.Letoto la MR™ le fana ka lihlahisoa tse fapaneng ho fana ka tharollo e molemohali bakeng sa basebelisi ba lense ea mahlo.
RI 1.60: MR-8
Lisebelisoa tsa lense tse phahameng tse leka-lekaneng tse nang le karolo e kholo ka ho fetisisa ea 'maraka oa lisebelisoa tsa RI 1.60.MR-8 e loketse lense efe kapa efe ea matla ea mahlo 'me ke tekanyetso e ncha ea lisebelisoa tsa lense tsa mahlo.
RI 1,67: MR-7
Global standard RI 1.67 lisebelisoa tsa lense.Lisebelisoa tse kholo bakeng sa lilense tse tšesaane tse nang le khanyetso e matla ea tšusumetso.MR-7 e na le bokhoni bo betere ba 'mala.
RI 1,74: MR-174
Lisebelisoa tsa lense tse phahameng haholo bakeng sa lilense tse tšesaane haholo.Basebelisi ba matla ba lilense tsa ngaka ba se ba lokolohile ho lilense tse teteaneng le tse boima.

Lilense tsa polycarbonate.
Polycarbonate e ile ea ntlafatsoa lilemong tsa bo-1970 bakeng sa ts'ebeliso ea sepakapaka, 'me hajoale e sebelisetsoa li-visors tsa helmete tsa bo-rasaense le bakeng sa lifensetere tsa moea tsa sepakapaka.Lilense tsa khalase ea mahlo tse entsoeng ka polycarbonate li ile tsa hlahisoa mathoasong a lilemo tsa bo-1980 ho arabela tlhokahalo ea lilense tse bobebe, tse hanyetsanang le tšusumetso.
Ho tloha ka nako eo, lilense tsa polycarbonate li fetohile tekanyetso ea likhalase tsa tšireletso, likhalase tsa lipapali le liaparo tsa mahlo tsa bana.Hobane ha li na monyetla oa ho robeha ho feta lilense tse tloaelehileng tsa polasetiki, lilense tsa polycarbonate le tsona ke khetho e ntle bakeng sa meralo ea mahlo e se nang rimless moo lilense li hokelletsoeng ho likarolo tsa foreimi ka li-drill mountings.
Lilense tse ling tse ngata tsa polasetiki li entsoe ka mokhoa oa ho bopa, moo thepa ea polasetiki ea metsi e behoang nako e telele ka mefuta ea lense, e tiisa polasetiki ea metsi ho etsa lense.Empa polycarbonate ke thermoplastic e qalang e le thepa e tiileng ka mokhoa oa li-pellets tse nyenyane.Mokhoa oa ho etsa lense o bitsoang ente molding, li-pellets li futhumatsoa ho fihlela li qhibiliha.Polycarbonate ea metsi e ntan'o kenngoa ka potlako ka har'a liforomo tsa lense, e hatelloa ka tlas'a khatello e phahameng 'me ea pholile ho etsa sehlahisoa sa lense se felileng ka mor'a metsotso e seng mekae.

Lilense tsa Trivex.
Leha e na le melemo e mengata, polycarbonate ha se eona feela lisebelisoa tsa lense tse loketseng ts'ebeliso ea polokeho le liaparo tsa mahlo tsa bana.
Ka 2001, PPG Industries (Pittsburgh, Penn.) e ile ea hlahisa lisebelisoa tsa lense tse qothisanang lehlokoa le tsona tse bitsoang Trivex.Joalo ka lilense tsa polycarbonate, lilense tse entsoeng ka Trivex li tšesaane, li bobebe ebile ha li na tšusumetso ho feta lilense tse tloaelehileng tsa polasetiki kapa tsa khalase.
Lilense tsa Trivex, leha ho le joalo, li entsoe ka monoma e thehiloeng ho urethane 'me li entsoe ka mokhoa oa ho bopa ka mokhoa o ts'oanang le mokhoa oa ho etsa lilense tsa polasetiki tse tloaelehileng.Sena se fa lilense tsa Trivex monyetla oa ho crisper optics ho feta lilense tsa polycarbonate tse entsoeng ka ente, ho latela PPG.