Amalensi engilazi.
Ezinsukwini zokuqala zokulungiswa kombono, wonke ama-lens e-eyeglass ayenziwe ngengilazi.
Izinto eziyinhloko zamalensi engilazi ingilazi ye-optical.Inkomba ye-refractive iphakeme kunaleyo yelensi ye-resin, ngakho-ke ilensi yengilazi incane kunelensi ye-resin ngamandla afanayo.Inkomba ye-refractive ye-glass lens yi-1.523, 1.60, 1.70, 1.80, 1.90.Amalensi engilazi anezinto ezinhle zokudlulisa kanye ne-mechanochemical: inkomba ye-refractive engashintshi kanye nezakhiwo ezinzile ngokomzimba namakhemikhali.
Nakuba amalensi engilazi enikeza ama-optics akhethekile, ayasinda futhi angaphuka kalula, okungase abangele ukulimala okukhulu esweni noma ngisho nokulahlekelwa iso.Ngenxa yalezi zizathu, amalensi engilazi awasasetshenziswa kabanzi ezibuko zamehlo.

Amalensi epulasitiki.
● 1.50 CR-39
Ngo-1947, i-Armorlite Lens Company eCalifornia yethula amalensi engilazi engilazi angasindi okuqala.Amalensi enziwe nge-polymer yepulasitiki ebizwa ngokuthi i-CR-39, isifinyezo se-“Columbia Resin 39,” ngoba kwakuwukwakhiwa kwama-39 kwepulasitiki elashwa ngokushisa okushisayo eyathuthukiswa yi-PPG Industries ekuqaleni kwawo-1940.
Ngenxa yesisindo sayo esincane (cishe isigamu sesisindo sengilazi), izindleko eziphansi nezimfanelo ezinhle kakhulu ze-optical, ipulasitiki ye-CR-39 isalokhu iyinto ethandwayo yamalensi eglasi nanamuhla.
● 1.56 NK-55
Amalensi e-Index angabizi kakhulu futhi aqinile kakhulu uma kuqhathaniswa ne-CR39.Njengoba le nto icishe ibe ngu-15% izacile futhi ilula ngo-20% kune-1.5 inikeza inketho yokonga kulezo ziguli ezidinga amalensi azacile.I-NK-55 inenani le-Abbe elingu-42 okwenza kube ukukhetha okuhle kwemiyalelo ephakathi kuka -2.50 kanye +2.50 dioptres.
● Amalensi epulasitiki anenkomba ephezulu
Eminyakeni engu-20 edlule, ngenxa yesidingo sezibuko zamehlo ezizacile, ezilula, inani labakhiqizi bamalensi bethule amalensi epulasitiki anenkomba ephezulu.Lawa ma-lens mancane futhi alula kunamalensi epulasitiki e-CR-39 ngenxa yokuthi anenkomba ephezulu yokuhlehla futhi angase abe namandla adonsela phansi akhethekile.
I-MR™ Series iyilensi ye-premium optical eklanywe i-Japan Mitsui Chemicals enenkomba ephezulu ye-refractive, inani eliphakeme le-Abbe, amandla adonsela phansi akhethekile kanye nokumelana nomthelela ophezulu.
I-MR™ Series ifaneleka ngokukhethekile amalensi ophthalmic futhi yaziwa njengesisekelo sokuqala se-thiourethane esisekelwe ku-high index lens material.Uchungechunge lwe-MR™ lunikeza imikhiqizo eyahlukene ukunikeza isixazululo esingcono kakhulu kubasebenzisi be-optical lens.
I-RI 1.60: MR-8
Izinto ezingcono kakhulu ezilinganiselayo zamalensi aphezulu anesabelo esikhulu kunazo zonke semakethe yezinto ezibonakalayo zelensi engu-RI 1.60.I-MR-8 ifaneleka kunoma iyiphi ilensi yamehlo yamandla futhi iyindinganiso entsha kumalensi we-ophthalmic.
I-RI 1.67: MR-7
I-Global standard standard RI 1.67 lens material.Izinto ezinhle zamalensi azacile anokumelana nomthelela oqinile.I-MR-7 inamakhono angcono wombala we-tint.
I-RI 1.74: MR-174
I-Ultra high index index lens material yamalensi amancanyana kakhulu.Abagqoki bamalensi aqinile manje sebekhululekile kumalensi awugqinsi futhi asindayo.

Amalensi e-polycarbonate.
I-Polycarbonate yasungulwa ngeminyaka yawo-1970 ukuze kusetshenziswe i-aerospace, futhi okwamanje isetshenziselwa ama-visor ama-helmet of astronaut kanye nama-windshields asemkhathini.Amalensi engilazi yamehlo enziwe nge-polycarbonate yethulwa ekuqaleni kwawo-1980 ukuphendula isidingo samalensi angasindi, amelana nomthelela.
Kusukela lapho, amalensi e-polycarbonate abe indinganiso yezibuko zokuphepha, izibuko zezemidlalo kanye nezingubo zamehlo zezingane.Ngenxa yokuthi mancane amathuba okuthi aphuke kunamalensi epulasitiki avamile, amalensi e-polycarbonate nawo ayisinqumo esihle semiklamo yezingubo zamehlo ezingenarimu lapho amalensi enamathiselwe ezingxenyeni zefreyimu ngokufakwa kokumboza.
Iningi lamanye amalensi epulasitiki enziwe ngenqubo yokubumba ukhonkolo, lapho uketshezi lwepulasitiki oluwuketshezi lubhakwa isikhathi eside ngamafomu amalensi, luqina ipulasitiki ewuketshezi ukuze kwakhiwe ilensi.Kodwa i-polycarbonate iyi-thermoplastic eqala njengento eqinile ngendlela yamapellets amancane.Enqubweni yokukhiqiza ilensi ebizwa ngokuthi i-injection molding, ama-pellets ayashiswa aze ancibilike.I-polycarbonate ewuketshezi ibe isijovwa ngokushesha ezibunjeni zamalensi, icindezelwe ngaphansi kwengcindezi ephezulu bese ipholiswa ukuze yakhe umkhiqizo welensi oqediwe esikhathini esingangemizuzu.

Amalensi e-Trivex.
Naphezu kwezinzuzo zayo eziningi, i-polycarbonate akuyona ukuphela kwezinto ezibonakalayo zamalensi ezifanele ukusetshenziswa kokuphepha kanye nezingubo zamehlo zezingane.
Ngo-2001, i-PPG Industries (Pittsburgh, Penn.) yethula i-lens eyimbangi ebizwa ngokuthi i-Trivex.Njengamalensi e-polycarbonate, amalensi enziwe nge-Trivex mancane, angasindi futhi amelana kakhulu nepulasitiki evamile noma amalensi engilazi.
Amalensi e-Trivex, nokho, akhiwe nge-monomer esekwe ku-urethane futhi enziwa ngenqubo yokubumba eyi-cast efana nendlela amalensi epulasitiki ajwayelekile enziwa ngayo.Lokhu kunikeza amalensi e-Trivex inzuzo ye-crisper optics kunamalensi e-polycarbonate abunjwe ngomjovo, ngokusho kwe-PPG.