Nekuwedzeredzwa kwekuziva kwevatengi kushandisa, vatengi vanowedzera havasi kungotarisisa kune sevhisi yechitoro chekushandisa, asi zvakare kutarisisa zvakanyanya kukuda kuziva kwezvinhu zvavo zvakatengwa (lenses).Kusarudza magirazi emaziso uye mafuremu zviri nyore, nekuti maitiro aripo uye zvaanoda zviri pachena, asi kana zvasvika pakusarudza lenzi, uropi hwemunhu hunotanga kurwadza.Iwo ese akajeka maviri lenzi, uye mitengo yakangosiyana, refractive index, Abbe nhamba, anti-blue mwenje, anti-kuneta… pane kunzwa kwekudonha kwava pedyo!
Nhasi, ngatingotaura nezve nzira yekutyora password yeaya ma paramita emalenzi!
I. Refractive Index
Refractive index ndiyo inonyanya kutaurwa parameter mumalenzi, inotsanangurwa sereshiyo yekumhanya kwekupararira kwechiedza mumhepo kusvika kune iri mulenzi.Zvinonzwika zvakaoma, asi zviri nyore chaizvo.Kupararira kwechiedza mumhepo kunokurumidza, uye iyi parameter inotsanangura kuti vakasiyana sei kubva kune mumwe.Kuburikidza neiyi parameter, isu tinogona zvakare kuziva ukobvu hwelens.
Kazhinji, zvinoratidzwa kuti iyo yakakwirira iyo refractive index, iyo yakaonda lens uye inonyanya kufadza lens inogadzirwa.
Iyo refractive index ye resin inowanzoita: 1.499, 1.553, 1.601, 1.664, 1.701, 1.738, 1.76, nezvimwewo. Kazhinji, zvinokurudzirwa kuti vanhu vane maonero ari pedyo -3.00D kana zvishoma vanogona kusarudza lenzi pakati pe1.499 ne1.499;vanhu vane maonero ari pedyo -3.00D kusvika -6.00D vanogona kusarudza lenzi pakati pe1.601 ne1.701;uye vanhu vane maonero ari pedyo pamusoro -6.00D vanogona kufunga malenzi ane yepamusoro refractive index.
II.Nhamba yeAbbe
Nhamba yeAbbe inodanwa zita raDr. Ernst Abbe uye inonyanya kutsanangura kuparadzirwa kwelenzi.
Lens Dispersion (Abbe Number): Nekuda kwekusiyana kwerefractive index yezvakasiyana wavelengths yechiedza mune imwechete yakajeka svikiro, uye chena mwenje ichiumbwa neakasiyana wavelengths yechiedza chine ruvara, zvinhu zvinopenya zvichasangana nechiitiko chakakosha chekupararira kana uchiramba chiedza chichena, zvakafanana nemaitiro anoburitsa murarabungu.Nhamba yeAbbe inverse proportionality indekisi inomiririra kugona kupararira kwezvinhu zvinoonekera, zvine kukosha kudiki kunoratidza kupararira kwakasimba.Ukama huri pa lens ndehwe: iyo yakakwirira nhamba yeAbbe, idiki yekupararira uye yakakwirira yemhando yekuona.Nhamba yeAbbe kazhinji iri pakati pe32 kusvika 59.
III.Refractive Power
Refractive simba rinowanzobatanidza 1 kusvika 3 zvidimbu zveruzivo, kusanganisira spherical power (kureva myopia kana hyperopia) uye cylindrical simba (astigmatism) uye axis of astigmatism.Spherical simba rinomiririra dhigirii re myopia kana hyperopia uye cylindrical simba rinomiririra dhigirii re astigmatism, nepo axis ye astigmatism inogona kutorwa sechinzvimbo che astigmatism uye inowanzo kupatsanurwa nemutemo (yakatwasuka), ichipokana nemutemo (wakatwasuka), uye oblique axis.Nesimba rakaenzana recylindrical, kupesana nekutonga uye oblique axis inogona kunge yakanyanya kuoma kuchinjika.
Semuenzaniso, chirevo che -6.00-1.00X180 chinomiririra myopia ye600 degrees, astigmatism ye100 degrees, uye axis ye astigmatism munzira 180.
IV.Blue Light Dziviriro
Kudzivirirwa kwechiedza chebhuruu ishoko rakakurumbira mumakore achangopfuura, sezvo mwenje webhuruu uchiburitswa kubva ku LED skrini kana mwenje uye kukuvadza kwayo kuri kuwedzera kuoneka nekushandiswa kwakapararira kwezvigadzirwa zvemagetsi.
Nguva yekutumira: Feb-21-2023