Magirazi egirazi.
Mumazuva ekutanga ekugadzirisa maonero, ese magirazi egirazi lenzi akagadzirwa negirazi.
Chinhu chikuru chegirazi lenzi igirazi remaziso.Iyo refractive index yakakwira kupfuura iyo resin lens, saka girazi lens itete pane resin lens musimba rimwe chete.Iyo refractive index yegirazi lens ndeye 1.523, 1.60, 1.70, 1.80, 1.90.Magirazi egirazi ane yakanaka transmittance uye mechanochemical properties: inogara ichiita refractive index uye yakagadzikana yemuviri nemakemikari zvinhu.
Kunyangwe magirazi egirazi achipa maoptic akasarudzika, anorema uye anogona kutsemuka nyore, zvichigona kukonzera kukuvadza kwakanyanya kuziso kana kurasikirwa kweziso.Nokuda kwezvikonzero izvi, magirazi egirazi haachashandiswa zvakanyanya kune magirazi emaziso.

Plastiki lenzi.
● 1.50 CR-39
Muna 1947, iyo Armorlite Lens Company muCalifornia yakaunza yekutanga lightweight epurasitiki eyegirazi lenzi.Malenzi akagadzirwa epurasitiki polymer inodaidzwa kuti CR-39, chidimbu che "Columbia Resin 39," nekuti yaive yemakumi matatu nemapfumbamwe kugadzirwa kwepurasitiki yakarapwa nekupisa yakagadziridzwa nePPG Industries mukutanga ma1940s.
Nekuda kwehuremu hwayo (inenge hafu yehuremu hwegirazi), mutengo wakaderera uye hunhu hwakanakisa hwekuona, CR-39 plastiki inoramba iri chinhu chakakurumbira chegirazi remaziso kunyange nhasi.
● 1,56 NK-55
Iyo inodhura zvakanyanya yeakakwira Index lenses uye yakaoma kwazvo ichienzaniswa neCR39.Sezvo zvinhu izvi zvakatenderedza 15% kutetepa uye 20% kureruka kupfuura 1.5 inopa sarudzo yehupfumi kune avo varwere vanoda matete lenzi.Iyo NK-55 ine Abbe kukosha kwe42 ichiita sarudzo yakanaka yezvinyorwa pakati -2.50 uye +2.50 dioptres.
● High-index plastiki lenses
Mumakore makumi maviri adarika, maererano nezvinodiwa zvemagirazi emaziso matete, akareruka, chiverengero chakati chevagadziri vemalensi vakaunza magirazi epurasitiki epamusoro-soro.Aya malenzi akatetepa uye akareruka kupfuura CR-39 epurasitiki lenzi nekuti iwo ane yakakwira index yerefraction uye anogona zvakare kunge ane yakaderera chaiyo giravhiti.
MR ™ Series ndeye premium optical lens yakagadzirwa neJapan Mitsui Chemicals ine yakakwira refractive index, yakakwira Abbe kukosha, yakaderera yakananga giravhiti uye yakakwirira kukanganisa kuramba.
MR ™ Series inonyanya kukodzera lenzi dzemaziso uye inozivikanwa seyekutanga thiourethane mabhesi akakwira index lens zvinhu.MR ™ nhevedzano inopa akasiyana ezvigadzirwa kuti ipe mhinduro yakanakisa yevashandisi vemaziso lens.
RI 1.60: MR-8
Iyo yakanakisa yakaenzana yakakwira index lens zvinhu ine chikamu chikuru cheRI 1.60 lens zvinhu musika.MR-8 inokodzera chero simba re ophthalmic lens uye chiyero chitsva mune ophthalmic lens zvinhu.
RI 1.67: MR-7
Global standard RI 1.67 lens zvinhu.Zvishandiso zvakakura zvemalensi akaonda ane simba rekupikisa.MR-7 ine zvirinani mavara tint kugona.
RI 1.74: MR-174
Ultra yakakwira index lens zvinhu zveakanyanya kutetepa lenzi.Vabati ve lens vakasimba vemishonga ikozvino vasununguka kubva kune makobvu uye anorema lenzi.

Polycarbonate lenses.
Polycarbonate yakagadziridzwa muma1970 yekushandiswa kwemuchadenga, uye parizvino inoshandiswa kune helmete mavhizaya evazivi vemuchadenga uye nemhepo inovhara muchadenga.Magirazi emaziso akagadzirwa epolycarbonate akaunzwa mukutanga 1980s achipindura kudiwa kweakareruka, ane simba-anodzivirira lenzi.
Kubva ipapo, polycarbonate lenzi dzave chiyero chekuchengetedza magirazi, magirazi emitambo uye maziso evana.Nekuti iwo haadiki kutsemuka pane akajairwa epurasitiki lenzi, polycarbonate lenses zvakare isarudzo yakanaka yeasina rimless eyewear dhizaini uko malenzi anonamirwa kune iyo furemu zvikamu zvine drill mountings.
Mazhinji mamwe malenzi epurasitiki anogadzirwa kubva pakuumbwa kwekuumbwa, uko zvinhu zvepurasitiki zvemvura zvinobikwa kwenguva yakareba mumalenzi mafomu, zvichiomesa purasitiki yemvura kugadzira lenzi.Asi polycarbonate ndeye thermoplastic iyo inotanga sechinhu chakasimba muchimiro chemapellets madiki.Mukugadzira lens inonzi jekiseni molding, mapellets anopisa kusvika anyungudika.Iyo yemvura polycarbonate inozoiswa jekiseni nekukurumidza mumalenzi mold, yakatsikirirwa pasi pekumanikidzwa kukuru uye yakatonhodzwa kuti igadzire chigadzirwa chelens chapera mukati memaminitsi mashoma.

Trivex lenzi.
Pasinei nezvakawanda zvakanakira, polycarbonate haisiriyo chete lens zvinhu zvakakodzerwa nekuchengetedza maapplication uye zvipfeko zvemeso zvevana.
Muna 2001, PPG Industries (Pittsburgh, Penn.) yakaunza imwe lens zvinhu inonzi Trivex.Kufanana nemalenzi epolycarbonate, lenzi dzakagadzirwa neTrivex dzakatetepa, dzakareruka uye dzakanyanya kusimba-inodzivirirwa pane yenguva dzose epurasitiki kana girazi lenzi.
Trivex lenses, zvisinei, anoumbwa neurethane-based monomer uye anogadzirwa kubva pakuumbwa kwekuumbwa kwakafanana nemagadzirirwo enguva dzose epurasitiki lenzi.Izvi zvinopa Trivex lenzi mukana weiyo crisper optics pane jekiseni-yakaumbwa polycarbonate lenses, maererano nePPG.