I-BIFOCAL NENKQUBELA

I-Bifocal

Ilensi enamacandelo amabini ombono ahlulwe ngomgca.Ngokubanzi umphezulu ulungiselelwe ukujonga umgama okanye umgama wekhompyuter kunye nomzantsi womsebenzi wombono okufutshane njengokufunda.

Kwilensi yeBifocal, amabala amabini ombono ahlulwe ngokukodwa ngeebonakalayoumgca.Indawo yokufunda esezantsi yi-28mm ububanzi kwaye ibekwe ngezantsi nje komgca osembindini welensi.Ubume bomzimba bendawo ye-bi-focal iya kuchaphazeleka kubude bomzimba welensi ekhethiweyo.

Ubude obupheleleyo belensi ye-Bifocal kufuneka bube yi-30mm okanye ngaphezulu.Sincoma i-lens ende yokunxiba ngokukhululekileyo, kodwa i-30 mm bubude obuncinane be-bifocal lens.Ukuba isakhelo esikhethiweyo sinobude belensi obungaphantsi kwe-30mm, kufuneka kukhethwe isakhelo esahlukileyo kwiilensi zeBifocal.

Uqhubela phambili

Oku kubhekiselele kuyilo lwe-lens olubandakanya iinkalo ezininzi zombono, ngaphandle kwemigca, kwaye ngamanye amaxesha kuthiwa "i-no-line multi-focal".Kwi-lens eqhubekayo, imilo yenxalenye echanekileyo ye-lens imalunga ne-funnel okanye i-mushroom.

KuMgangatho wokuQhubela phambili, isahlulo esiphezulu sesokubona umgama, ukucutha ukuya kumbindi osezantsi kumbono ophakathi, ekugqibeleni ukuya kwisahlulo esisezantsi sombono wokufunda.Iindawo eziphakathi kunye nezokufunda kulindeleke ukuba zibe ncinane kunommandla womgama.Ii-Standard Progressives zezona zinxitywa iilensi eziqhubekayo.

KwiNdawo yokuSebenza iProgressive, inxalenye ephezulu yeyombono ophakathi, ngelixa isahlulo esisezantsi sesombono okufutshane okanye ukufunda;akukho mbono womgama kwiNdawo yokuSebenza eQhubekayo.Kukho iintlobo ezi-2 zeNdawo yokuSebenza ePhambili: iMidi-Range eqhubela phambili, kunye neNear-Range Progressive.I-Mid-Range Progressive ilungele umsebenzi okufutshane obandakanya umbono onzima ophakathi onje ngeekhompyuter zedesktop kunye neentlanganiso, ngelixa i-Near-Range Progressive ilungele ukumiswa kufutshane nomsebenzi onjengokufunda ixesha elide, ukusetyenziswa kwesixhobo esibanjwa ngesandla, kunye nobuchule.

Ubude belensi yelensi eqhubekayo kufuneka bube yi-30mm okanye ngaphezulu.Sincoma i-lens ende yokunxiba ngokukhululekileyo, kodwa ubude obuncinci be-lens yi-30 mm.Ukuba esi sakhelo sinobude belensi obungaphantsi kwe-30mm, kufuneka kukhethwe isakhelo esahlukileyo kwiilensi eziqhubekayo.

 


Ixesha lokuposa: Dec-10-2020