Iilensi zeglasi.
Kwiintsuku zokuqala zokulungiswa kombono, zonke iilensi zeglasi zazenziwe ngeglasi.
Izinto eziphambili kwiilensi zeglasi yiglasi yeglasi.Isalathiso se-refractive siphezulu kuneso se-resin lens, ngoko i-lens yeglasi incinci kune-resin lens kumandla afanayo.Isalathiso se-refractive ye-glass lens yi-1.523, 1.60, 1.70, 1.80, 1.90.Iilensi zeglasi zinokuhanjiswa kakuhle kunye neempawu ze-mechanochemical: isalathisi esihlaziyiweyo esiqhubekayo kunye neempawu ezizinzileyo zomzimba kunye neekhemikhali.
Nangona iilensi zeglasi zibonelela ngee-optics ezikhethekileyo, zinzima kwaye zinokophuka ngokulula, ezinokubangela ingozi enkulu kwiliso okanye nokuphulukana neliso.Ngenxa yezi zizathu, iilensi zeglasi azisasetyenziswa kakhulu kwiindondo zamehlo.

Iilensi zeplastiki.
● 1.50 CR-39
Ngo-1947, iNkampani ye-Armorlite Lens yaseCalifornia yazisa iilensi zeglasi yeglasi yokuqala ekhaphukhaphu.Iilensi zenziwe ngepolymer yeplastiki ebizwa ngokuba yi-CR-39, isifinyezo se-"Columbia Resin 39," kuba yayiyi-39th yokwenziwa kweplastiki enyangwa ngobushushu eyaphuhliswa yi-PPG Industries ekuqaleni koo-1940.
Ngenxa yobunzima bayo obulula (malunga nesiqingatha sobunzima beglasi), ixabiso eliphantsi kunye neempawu ezibalaseleyo zamehlo, iplastiki yeCR-39 ihlala iyinto eyaziwayo kwiilensi zeglasi nanamhlanje.
● 1,56 NK-55
Eyona nto ifikelelekayo kwiilensi ze-Index ephezulu kwaye yomelele kakhulu xa ithelekiswa neCR39.Njengoko le mpahla ijikeleze i-15% encinci kwaye i-20% ilula kune-1.5 inika inketho yezoqoqosho kwezo zigulana zifuna iilensi ezincinci.I-NK-55 inexabiso le-Abbe le-42 eyenza ibe yinto efanelekileyo yokukhetha imimiselo phakathi kwe -2.50 kunye + 2.50 dioptres.
● Iilensi zeplastiki ezikumgangatho ophezulu
Kule minyaka ingama-20 idluleyo, ngenxa yokufunwa kweeglasi zamehlo ezibhityileyo, ezikhaphukhaphu, uninzi lwabavelisi beelensi baye bazisa iilensi zeplastiki ezinophawu oluphezulu.Ezi lens zincinci kwaye zikhaphukhaphu kune-CR-39 iilensi zeplastiki kuba zinesalathiso esiphakamileyo sokuphindaphinda kwaye zinokuba nomxhuzulane othile osezantsi.
I-MR™ Series yi-premium optical lens eyilwe yiJapan Mitsui Chemicals enesalathiso esiphezulu se-refractive, ixabiso eliphezulu le-Abbe, ubunzima obuthile obuphantsi kunye nokumelana nempembelelo ephezulu.
Uluhlu lwe-MR™ lulungele ngokukodwa iilensi zamehlo kwaye yaziwa njengesiseko sokuqala se-thiourethane isiseko semathiriyeli yelensi ephezulu.Uthotho lwe-MR™ lubonelela ngeemveliso ezahlukeneyo ukunika esona sisombululo silungileyo kubasebenzisi be-lens yamehlo.
RI 1,60: MR-8
Eyona nto ilungeleleneyo iphezulu yelensi imathiriyeli enesona sabelo sikhulu se-RI 1.60 yemalike yelensi yezinto.I-MR-8 ifanele nayiphi na i-lens ye-ophthalmic yamandla kwaye ngumgangatho omtsha kwizinto eziphathekayo ze-lens zamehlo.
RI 1,67: MR-7
Global umgangatho RI 1.67 lens imathiriyeli.Izinto ezinkulu kwiilensi ezincinci ezinokumelana nempembelelo enamandla.I-MR-7 inezakhono ezingcono zombala we-tint.
RI 1,74: MR-174
Isixhobo selensi ephezulu kakhulu yeelensi ezibhityileyo.Abanxili beelensi abamiselweyo abanamandla ngoku bakhululekile kwiilensi ezishinyeneyo nezinzima.

Iilensi zePolycarbonate.
I-Polycarbonate yaphuhliswa ngeminyaka yoo-1970 ukwenzela ukusetyenziswa kwe-aerospace, kwaye ngoku isetyenziselwa iivisor ze-helmet zoosomajukujuku kunye ne-windshields yesiphekepheke.Iilensi zeglasi yamehlo ezenziwe ngepolycarbonate zaziswa ekuqaleni kweminyaka yoo-1980 ukuphendula imfuno yokukhanya, iilensi ezinganyangekiyo kwimpembelelo.
Ukususela ngoko, iilensi ze-polycarbonate ziye zaba ngumgangatho weeglasi zokhuseleko, izibuko zezemidlalo kunye namehlo abantwana.Ngenxa yokuba kunqabile ukuba ziphuke kuneelensi zeplastiki eziqhelekileyo, iilensi zepolycarbonate zikwalukhetho olulungileyo loyilo lwempahla yamehlo engenamsinga apho iilensi zincanyathiselwe kumacandelo esakhelo ngokufakwa kwedrill.
Uninzi lwezinye iilensi zeplastiki zenziwe ngenkqubo yokubumba, apho imathiriyeli yeplastiki engamanzi ibhakwa ixesha elide kwiifom zelensi, iqinisa iplastiki engamanzi ukwenza ilensi.Kodwa i-polycarbonate i-thermoplastic eqala njengento eqinile ngendlela yeepellets ezincinci.Kwinkqubo yokwenziwa kwelensi ebizwa ngokuba yinaliti yokubumba, iipellets ziyafudunyezwa zide zinyibilike.I-polycarbonate engamanzi ke ifakwe ngokukhawuleza kwi-lens molds, ixinzelelwe phantsi koxinzelelo oluphezulu kwaye ipholile ukwenza imveliso yelensi egqityiweyo kwimizuzu embalwa.

Iilensi ze-Trivex.
Ngaphandle kweenzuzo ezininzi, i-polycarbonate ayisiyiyo yodwa i-lens imathiriyeli efanelekileyo kwizicelo zokhuseleko kunye neempahla zamehlo zabantwana.
Kwi-2001, i-PPG Industries (ePittsburgh, ePenn.) yazisa i-lens ye-lens ephikisanayo ebizwa ngokuba yi-Trivex.Njengeelensi zepolycarbonate, iilensi ezenziwe ngeTrivex zibhityile, zikhaphukhaphu kwaye zixhathisa ngakumbi kuneeplastiki eziqhelekileyo okanye iilensi zeglasi.
Iilensi ze-Trivex, nangona kunjalo, zenziwe nge-monomer esekwe kwi-urethane kwaye zenziwe ngenkqubo yokubumba i-cast efana nendlela iilensi zeplastiki eziqhelekileyo zenziwa ngayo.Oku kunika iilensi ze-Trivex inzuzo ye-crisper optics kunelensi zepolycarbonate ezenziwe inaliti, ngokwePPG.