Lapho bekhetha amalensi kadokotela, abathengi abaningi bakholelwa ukuthi uma inkomba yelensi iphakeme, ikhwalithi yelensi iba ngcono. Kodwa-ke, ukusebenza kwelensi kuthonywa izici eziningi, okuhlanganisa ukusebenza kokukhanya, ukujiya kwelensi, isisindo, izindleko, njll. Ukuqonda izici zamalensi anezinkomba ezahlukene kusiza odokotela bamehlo ukuthi bancome ikhambi elifanele kakhulu kumuntu ngamunye ogqokile.
Ukusebenza Okubonakalayo
I-Abbe Value ilinganisa ukuthi ingakanani i-chromatic dispersion ekhiqizwa yilensi. I-abbe value ephezulu isho ukubona okucacile okunokuphazamiseka okuncane kombala.
- Inkomba 1.50 inikeza inani eliphakeme kakhulu le-Abbe phakathi kwazo zonke izinto ze-optical lens, okuletha ukucaca okuhle kakhulu kokubona kanye nokusabalala okuncane kwe-chromatic.
- Ngokuvamile, izinto ze-index ephezulu zivame ukuhilela ukuhweba okuthile ekukhanyeni kokukhanya ukuze kufezwe amalensi amancane. Kodwa-ke, i-index 1.60 kanye ne-1.71 zisanikeza inani eliphezulu le-Abbe.
Kubathengi abanemithi ephansi futhi ababheka ikhwalithi yokubuka njengento ebalulekile, ilensi ye-index 1.50 inconywa kakhulu.
Ubukhulu kanye nesisindo
Ubukhulu kanye nesisindo selensi kungenye yezinto ezibonakala kakhulu phakathi kwezinto zokwakha.
- Inkomba 1.50 kanye no-1.56 inikeza ukujiya okujwayelekile kanye nesisindo esijwayelekile.
- Inkomba 1.60 kanye no-1.67 zinikeza ilensi encane nelula, zithuthukisa ukubukeka kobuhle ikakhulukazi kuma-dose aphakathi kuya kwaphezulu.
- Inkomba 1.71 kanye no-1.74 zinikeza ilensi encane kakhulu futhi elula kakhulu, okwenza zibe zilungele kakhulu imithi ebhalwe phansi ephezulu kakhulu.
Njengoba inkomba ikhula, amalensi aba mancane futhi alula, okuthuthukisa ubuhle bokubona kanye nenduduzo yabagqokile.
Ukubekwa Kwezindleko
Izindleko zingenye into ebalulekile ekukhetheni amalensi. Ngokuvamile, inkomba ephezulu iza nezindleko eziphakeme, yize kukhona okuhlukile.
- Inkomba 1.50 kanye no-1.56 zibekwe njengezixazululo ezingabizi kakhulu emakethe. Kodwa izindleko ze-1.50 ziphakeme kune-1.56.
- Inkomba 1.60 kanye no-1.67 zimelela isigaba esiphakathi kuya kwesiphezulu, zilinganisa ukusebenza kanye nokufinyeleleka kalula.
- Inkomba 1.71 ibiza kakhulu, kodwa ingabizi kakhulu kune-1.74.
- I-Index 1.74 iyindlela esezingeni eliphezulu eyenzelwe imithi ebiza kakhulu kanye namaqoqo aphezulu okukhanya.
Isiphetho
Akukho nkomba eyodwa yelensi efanelekile kubo bonke abagqokile. Kunalokho, ikhambi elingcono kakhulu yilelo elifanela izidingo zombono zomgqokile. Ngaphezu kwamaphuzu angenhla, izici ezifana nosayizi wohlaka, ukuma kohlaka, ibanga le-pupillary, kanye nomklamo welensi nazo kufanele zicatshangelwe, njengoba zonke zingathonya ukujiya kokugcina kwelensi, ukubukeka, kanye nenduduzo yokugqokwa iyonke.
Njengomkhiqizi welensi yokukhanya ochwepheshe, sinikeza iphothifoliyo ephelele yenkomba yelensi esukela ku-1.50 kuya ku-1.74, kanye nezinketho ezahlukene zokugqoka, i-photochromic, kanye nelensi enemibala. Ngokunikeza ukukhetha okuphelele kwezixazululo zelensi, sisiza abalingani bethu bomhlaba wonke ukuhlangabezana nezidingo zemakethe ezahlukahlukene ngenkathi siqinisekisa ukuthi wonke umuntu ogqokile angathola ilensi efanele izidingo zakhe.
Ungathola ulwazi olwengeziwe ekhasini
https://www.universeoptical.com/stock-lens/