1.523 Girazi Bifocal Photochromic Photogrey Optical Lens

Kana kugadziridzwa kweziso remunhu kwapera simba nekuda kwezera, anofanirwa kugadzirisa chiono chake zvakasiyana kune chiono chiri kure uye chiri pedyo.Panguva ino, anowanzoda kupfeka magirazi maviri ega ega, izvo zvakanyanya kusagadzikana.Naizvozvo, zvinodikanwa kukuya maviri akasiyana refractive masimba pane imwechete lens kuti ave lenzi munzvimbo mbiri.Malenzi akadaro anodaidzwa kuti bifocal lenses kana bifocal glasses.

Fusion type:ndiko kusanganisa lens zvinhu nepamusoro refractive index munzvimbo ye concave pahombe huru pakupisa kwepamusoro, uye refractive index yeplate huru yakaderera.Wobva wamhanya mukati meiyo sub-chidimbu kuti curvature ye-sub-piece surface ienderane neiyo yechikamu chikuru.Hapana pfungwa yekutara.Kuverenga kwekuwedzera A kunoenderana nerefractive simba F1 yekumberi kwenzvimbo iri kure yekuona, iyo curvature FC yepakutanga concave arc uye fusion ratio.The fusion ratio hukama hunoshanda pakati peiyo refractive index yezviviri phase fusion lens zvinhu, apo n inomiririra refractive index yegirazi huru (kazhinji girazi rekorona) uye ns inomiririra refractive index ye sub-sheet (flint girazi) ne. kukosha kukuru, kozoita reshiyo yekusanganisa k=(n-1)/(nn), saka A=(F1-FC)/k.Zvinogona kuoneka kubva pane iri pamusoro fomula kuti mudzidziso, kushandura kumberi kwepamusoro curvature yendiro huru, iyo concave arc curvature uye sub-plate refractive index inogona kushandura iri pedyo yekuwedzera dhigirii, asi muchokwadi, inowanikwa nekuchinja. iyo sub-plate refractive index.Tafura 8-2 inoratidza refractive index ye sub-sheet flint girazi rinowanzoshandiswa munyika kugadzira akasiyana-akawedzera fusion bifocal magirazi.