Huwandu hwekuzivikanwa kwemafirimu anofambira mberi munzvimbo dzakasimukira dzakadai seEurope neUnited States hwapfuura 70%, uye mafirimu anofambira mberi anotora 30% yehuwandu hwekutengesa, nekutengesa kwepagore kweanosvika 500 miriyoni.Nekudaro, mafirimu anofambira mberi ari pasi pe3% anozivikanwa mumusika weChinese parizvino.Nekuwedzera kwemaitiro ekuchembera muChina uye chiitiko chemyopia pakati pevechiri kuyaruka, firimu rinofambira mberi rinobatsira zvakanyanya mumusika wepamba.Ngatitaurei nezve sarudzo yekufambira mberi firimu chiteshi.
1. Chii chinonzi chiteshi zvishoma nezvishoma
Progressive chiteshi inoreva dhigirii shanduko chiteshi umo dhigirii renhambwe pa "10" yenzvimbo iri kure yeinofambira mberi yakawanda-yakatarisana lens iri kuramba ichiwedzera uye ichichinjika kusvika padanho renzvimbo iri pedyo.
2. Ndeapi maitiro ehurefu hwechiteshi
Iyo chiteshi inzira yekuenderera mberi kwekuwedzera kwedhigirii, saka kana ADD yemutengi yatemwa, kureba kwakasiyana kwechiteshi kune pesvedzero huru pakusiyana kwedhigirii rechiteshi.Kusiyana kwakasiyana-siyana kwechiteshi chakareba kwakadzikama kupfuura iyo yechiteshi chiduku, uye nzvimbo yekuona yenzvimbo imwe neimwe yakasiyanawo.
3. Nzira yekusarudza nzira inofambira mberi
Kureba kweframe: Ita shuwa kuti inofambira mberi uye iri padyo referensi mhete dziri mukati mehurefu hwehurefu.
ADD saizi: ADD≥+2.00 kusarudza chiteshi chakareba chakakodzera, chinoteverwa nepakati chiteshi;Short channels ine ADD≤+1.75 inogonawo kusarudzwa.General misimboti: Iyo yakakura iyo ADD iri, iyo chiteshi chinofanira kunge chakareba.
Kushandiswa: kure nekunze, sarudza chiteshi chakareba;Rudzi rwepakati nepedyo runonyanya kusarudza mapfupi uye epakati nzira.
Yekutanga girazi rereferenzi: Iyo nyowani inofambira mberi chiteshi padyo sezvinobvira kune yekutanga mutengi inofambira mberi chiteshi.
Uye zvakare, iyo point pupil nzira inogona kushandiswa zvakare, kureva, zvichiteerana kunongedza nguva iri kure uye yepedyo nguva mudzidzi murutsigiro rwenzvimbo inoratidzira, kunyatso tarisa kureba kwechiteshi.
Hurefu hwechiteshi chakasarudzwa hunofanira kusangana nezvinodiwa nevatengi vakapfeka zvakanyanya kugadzikana, zvakanyanya kuenderana nemaitiro ake emeso.
Multi-focus progressives inopa akawanda chiteshi (9, 10,11, 12, 13, 14, 15, 17, etc.) kuita kuti kusarudzwa kwechiteshi kuve nyore.
Nguva yekutumira: Oct-10-2022