1.59 PC Polycarbonate Bifocal Lens
Chii chinonzi Polycarbonate Lenses?
Polycarbonate lenses inosiyaniswa nekusimba kwayo, shatterproof, uye yakavakirwa-mukati-inodzivirira zvivakwa. Impact resistance inovasiyanisa kubva kune mamwe magirazi emaziso. Izvi zvinovaita sarudzo yakanaka kune vanhu vane mararamiro anoshingaira avo vanowanzo donha kana kukwenya magirazi avo. Polycarbonate lenses zvakare akanakira vana vemaziso ezvipfeko uye magirazi ekuchengetedza ekudzivirira.
Yakareruka uye yakatetepa kupfuura epurasitiki akajairwa kana girazi lenzi, polycarbonate lenzi anogona kuve akasununguka kupfeka uye achiri kusapira kunaka. Haawedzeri kukora pakuona zvakanaka, anoderedza kumonyaniswa, uye anovharira 100 muzana yemwaranzi inokuvadza yeultraviolet (UV light).
Magirazi ane polycarbonate lenses akatanga kugadzirwa muna 1980s, uye anga achinatsiridza kubva ipapo. Ese akajairwa machira, senge anti-reflective coating, scratch-resistant coating, uye matira anogona kuiswa kune aya lenzi.
Matauriro Ekutaura Kana Iwe Uchida Bifocals
Presbyopia chirwere chinoenderana nezera chinoguma nekusajeka pedyo nekuona. Inowanzoonekwa zvishoma nezvishoma; uchanetseka kuti uone bhuku kana pepanhau pedyo uye wobva wariendesa kure kure nechiso chako kuitira kuti rioneke zvakajeka.
Panenge pazera re40, iyo crystalline lenzi mukati meziso inorasikirwa nekushanduka kwayo. Kana ichiri mudiki, lenzi iyi yakapfava uye inochinjika, iri nyore kuchinja chimiro saka inogona kutarisisa chiedza paretina. Mushure memakore makumi mana, lens inova yakasimba, uye haigoni kuchinja chimiro nyore nyore. Izvi zvinoita kuti zvive zvakaoma kuverenga kana kuita mamwe mabasa epedyo.
Bifocal Lenses
Bifocal eyeglass lenses ine maviri lens masimba ekukubatsira kuona zvinhu pazvinhambwe zvese mushure mekunge warasikirwa nekugona kushandura kutarisa kwemeso ako nekuda kwezera, inozivikanwawo se presbyopia. Nekuda kweichi basa chairo, bifocal lenzi anonyanya kunyorerwa kune vanhu vanopfuura makore makumi mana kuti vabatsire kutsiva kuparara kwechisikigo kwekuona nekuda kwekuchembera.
Matatu Dhizaini eBifocal Lenses
Pasinei nechikonzero chaunoda kunyorerwa kuti ugadzirise pedo-yekuona, bifocals ese anoshanda nenzira imwechete. Chikamu chidiki muchikamu chepasi chelenzi chine simba rinodiwa kugadzirisa chiono chako chiri pedyo. Iyo yakasara yelenzi kazhinji ndeye yako yekuona chinhambwe. Iyo lens segment yakatsaurirwa kugadziriso yepedyo-yekuona inogona kuva yezvimiro zvitatu:
Chimiro 1
Iyo Flat Yepamusoro inoonekwa seimwe yeakareruka multifocal lenses kuchinjika, saka ndiyo inonyanya kushandiswa bifocal (FT 28mm inodaidzwa seyakajairika saizi). Iyi lens style zvakare ndeimwe yeanonyanya kuwanikwa mune chero svikiro uye kusanganisira nyaradzo lenzi. Iyo Flat Yepamusoro inoshandisa hupamhi hwakazara hwechikamu ichipa mushandisi kuverenga kwakajeka uye nhanho shanduko.
Chimiro 2
Sezvinoreva zita iro raundi bifocal rakatenderera papasi. Ivo pakutanga vakagadzirirwa kubatsira vanopfeka kuti vasvike kunzvimbo yekuverenga zviri nyore. Zvisinei, izvi zvinoderedza hupamhi hwekuona pedyo kunowanikwa pamusoro pechikamu. Nekuda kweizvi, denderedzwa bifocals haanyanyo kufarirwa kupfuura iwoflat-top bifocals.Chikamu chekuverenga chinonyanya kuwanikwa mu28mm.
Chimiro 3: Yakasanganiswa
Chikamu chakafara cheBlended bifocal ndeye 28mm. Iyi lens dhizaini ndeyecosmetically iyo yakanyanya kutaridzika lenzi yeese bifocals, ichiratidza chero chiratidzo chechikamu. Nekudaro, pane 1 kusvika 2mm yekusanganisa renji pakati pechikamu chesimba uye iyo lens yakanyorwa. Iyi vhezheni yemhando ine maonero asina kunaka anogona kuratidza kuti haachinjike kune vamwe varwere. Nekudaro, iri zvakare lenzi rinoshandiswa nevarwere vasina-adaptive kune anofambira mberi lenzi.
