Ungazikhetha Kanjani Izibuko Zelanga Ezine-Polarized Zokushayela?
Uma ushayela, ungase uzwe ukukhanya okukhanyayo futhi ungakwazi ukubona umgwaqo kahle. Ikakhulukazi, ukukhanya kwelanga okuqondile noma ukukhanya okukhulu kwezibani ezizayo ebusuku kungabangela "ubumpumputhe obusheshayo". Uma ufuna ukubona kangcono, kubalulekile ukugqoka izibuko zelanga ezigobile. Kodwa ungazikhetha kanjani izibuko zokushayela ezikufanele? Lesi sihloko sizochaza izici ezilandelayo ngokuningiliziwe.
1. Ukuqonda Ukuthi Kungani Amalensi Ane-Polarized Efanelekela Ukushayela
Izibuko zelanga ezihlanganisiwe ziqashelwa emhlabeni wonke njengezibuko ezifanele kakhulu zokushayela, ngoba zinesihlungi esikhethekile esivimba ukukhanya okuvundlile nokukhanya okunamandla, okwenza insimu yokubona icace. Okwamanje, zingavimba nemisebe ye-ultraviolet, zivikele amehlo, futhi zinciphise ukukhathala ngenkathi ushayela.
2. Ukuvikelwa kwe-UV
Umsebenzi oyinhloko wezibuko zelanga ezigobile ukuvikelwa kwe-UV. Amalensi amahle ezibuko zelanga ezigobile angavimba ukungena kwemisebe ye-ultraviolet engaphezu kuka-90%.
Ngakho-ke, lapho ukhetha izibuko zelanga ezimibalabala zokushayela, qiniseka ukuthi uhlola ukuthi izibuko zamehlo zinophawu lwe-UV. Njengokuthi “ukuvikelwa kwe-UVA/UVB” noma “i-UV 400” (evimba imisebe ye-UV efinyelela ku-400nm futhi ihlunge umonakalo we-UV ongu-99%-100%).
3. Izinto Zelensi
Izinto ezisetshenziswa amalensi zinquma izakhiwo ezahlukahlukene zokukhanya kanye nezici zomzimba, okuhlanganisa isisindo, inkomba yokukhanya, inombolo ye-Abbe, kanye nokudluliselwa kokukhanya.
Njengamanje, izinto ezivame kakhulu ze-lens zelanga emakethe yilezi: ingilazi, i-resin, i-polycarbonate, i-TAC, ne-nylon. Sicela ubheke ithebula elingezansi ukuze uthole isingeniso kanye nokuhlaziywa kwazo okuqondile kwezinzuzo kanye nokungalungi kwazo:
| Izinto Zelensi | Incazelo | Ochwepheshe | Ububi |
| Ingilazi | Izibuko ezibonakalayo ezinikeza umbono ocacile | Inkomba ephezulu yokubuka, ayigugi, ayishisi kakhulu. | Iyasinda futhi iyaphuka kalula, ngezinye izikhathi iyingozi uma imoto iba sengozini. |
| I-Resin | Amalensi e-resin enziwe nge-resin ehlanganiswa ngamakhemikhali, icutshungulwe futhi ipholishwe. | 29/3000 Ilula, idlulisa ukukhanya okuhle kakhulu, ububanzi be-photometric, umbala omuhle, kanye nentengo ephansi. | Kulula ukuklwebha, akuphikisi ukushisa okuphezulu. |
| Ilensi ebunjwe nge-polycarbonate (izinto ezisetshenziswa ekushiseni) ngemva kokushisa. | Amalensi akulula ukuwaphula, alula kunamalensi ajwayelekile e-resin, amelana nomthelela omkhulu kakhulu, avikeleke ku-UV, awaphenduki abe phuzi kalula. | Ivame ukugqwala, ayimelani nokuguguleka komhlaba futhi ibiza kakhulu kune-resin lens. | |
| I-TAC | Ifilimu ye-cellulose triacetate iyinto ye-polymer eyaziwa ngokudlulisa kwayo ukukhanya okuphezulu. | Inciphisa ukukhanya okukhanyayo ngempumelelo, imelana nama-acid nama-alkali. Ilula futhi inenani elihle kakhulu. | Ukumelana nokuguguleka okubi, izakhiwo zokukhanya ezingazinzile. |
| Amalensi enziwe nge-TROGAMID CX, i-polyamide ekhethekile esobala (eyaziwa kakhulu ngokuthi i-memory nylon). | Ayishayisani kakhulu futhi iyanwebeka, okwenza kube ukukhetha okuthandwayo kwabadlali kanye nochwepheshe bezingubo zokuzivikela. | Izindleko zokukhiqiza eziphakeme |
Uhlobo ngalunye lwalezi zinto ezinhlanu zelensi lunezinzuzo nezinkinga zalo, ngakho-ke akunakwenzeka ukusho ukuthi iyiphi engcono. Uma ukhetha amalensi ahlanganisiwe, kufanele ucabangele izakhiwo zezinto ezahlukene ngokusekelwe esimweni esithile sokusetshenziswa kanye nezidingo zomuntu ngamunye.
4. Imibala Yelensi Nobumnyama
Ingabe umbala welensi ubalulekile ngezibuko zelanga ezigobile? Impendulo inguyebo ngokuphelele. Nakuba umbala welensi ungathinti i-polarization (okuncike ezintweni zelensi kanye nobuchwepheshe befilimu egobile), ukujula kombala kuthinta ukuhanjiswa kokukhanya (inani lokukhanya okudlulayo). Imibala ehlukene ingathinta nokubona kombala. Izibuko zelanga ezigobile ziyatholakala ngemibala ehlukahlukene, njengompunga, onsundu, obomvu, oluhlaza okotshani, onsundu, oluhlaza okwesibhakabhaka, njll. Ukuze uthole izimo ezithile zokushayela, sicela ubheke ithebula elingezansi ukuze uthole izincomo.
| Imibala yelensi enconyiwe | |||
| Izimo Zokukhanyisa | Kunconyiwe | Akunconywa | Amaphuzu Ayinhloko |
| Ukukhanya kwelanga okukhanyayo | Okumpunga: kulungele ukukhanya kwelanga okukhanyayo. Okunsundu kanye ne-amber: kuthuthukisa ukungafani. Okuluhlaza: kunciphisa ukukhathala kwamehlo, kufanelekile ukushayela ibanga elide. | Okubomvu Nokuluhlaza Okwesibhakabhaka: kubangela ukuphambuka kombala kalula, okungavimbela abashayeli ekutholeni ngokunembile izimpawu ezibalulekile zomgwaqo njengezibani zomgwaqo. | Ama-lens tint akufanele abe mnyama kakhulu, ikakhulukazi uma ushayela emigwaqweni enemihubhe eminingi, njengoba ukukhanya okushintshanayo nobumnyama kuzokwenza ukuthi abafundi bathathe isikhathi eside ukuzivumelanisa, okudala ingozi yokuphepha. |
| Liguqubele, lihlwile, noma linenkungu | Ophuzi: Kungathuthukisa kakhulu ukungafani kokubona, okuvumela abashayeli ukuthi babone izimo zomgwaqo ngokucacile. | Imibala ephuzi, eluhlaza okwesibhakabhaka, ebomvu, neminye emnyama emini. | Ungalokothi ugqoke imibala emnyama ebusuku lapho ukukhanya kuphansi. |
Amanothi:
• Izibuko zelanga ezinezimbozo ezibukwayo azifanele ukushayela.
• Labo abangaboni kahle bangakhetha izibuko zelanga ezinikezwa udokotela (xhumana nodokotela wamehlo).
5. Ukufaneleka kanye Nenduduzo
Amafreyimu ezibuko zelanga ahamba phambili emakethe atholakala kakhulu ngesimo sendiza, isikwele, nesiyindilinga. Uma ukhetha isimo sefreyimu esifanela ubuso bakho, udinga futhi ukunaka induduzo kanye nokumbozwa kwaso.
1) Ungakhetha "uhlaka olukhulu" olumboza 1 cm nxazonke kwamehlo, kodwa qiniseka ukuthi amathempeli alingana kahle esihlathini sakho (izikhala zizovumela ukukhanya okukhanyayo kungene).
2) Uhlaka olugoqekayo luyisinqumo esihle, olunomklamo ogobile omboza izinhlangothi zombili zamehlo futhi uvimbele ukukhanya okungaphandle.
3) Khetha ozimele abalula (njengepulasitiki ye-TR90 noma i-titanium alloy).
4) Izibuko zelanga akufanele zishelele uma ushukumisa ikhanda lakho.
6. Hlola Ngaphambi Kokuthenga
Ngaphambi kokuthi uthenge izibuko zelanga, qiniseka ukuthi wenza isivivinyo sokugqama kanye nesivivinyo sesikrini se-LCD, bese uhlola nenduduzo.
Ngiyethemba ukuthi lesi sihloko sizokusiza ukuthola izibuko zelanga ezimibalabala ezikwenza uhlale uphephile futhi ukhululekile.