Kuyini Ukucindezeleka Kwelensi? Ingabe Kuyawathinta Amehlo Akho?

Uma sithenga izibuko ezintsha, sivame ukugxila ekutheni umuthi unembile yini, ukuthi uhlaka lulula yini, nokuthi isitayela sibukeka kahle yini. Kodwa wake waba nalokhu: yize umuthi wakho omusha umufana ncamashi nowakudala, umbono wakho uzizwa ungakhululekile, ukhathele, noma uphambukile kancane ngendlela ongakwazi ukuyichaza kahle?

Uma kunjalo, imbangela kungenzeka ukuthi iyimininingwane yobuchwepheshe enganakwa kalula ngesikhathi senqubo yokukhiqiza—ukucindezeleka kwelensi.

I. Kuyini ukucindezeleka kwelensi futhi kwenzeka kanjani kulensi?

Ukucindezeleka kwelensikubhekisela esimeni esenzeka lapho ilensi eqediwe yomhlabathi ifakwe ohlakeni. Ngenxa yezizathu ezifana nelensi enkulu kakhulu noma izikulufo zohlaka ziqiniswe kakhulu, ukujiya ebusweni belensi kuyaba okungalingani, okudala amaphethini afana namaza amanzi (ama-ripples) ngaleyo ndlela kuthinte ikhwalithi yesithombe.

Ukucindezeleka kwelensi kungahlukaniswa kube ukucindezeleka kwangaphakathi futhi ukucindezeleka kwangaphandle.

Ukucindezeleka kwangaphakathi ivela ezintweni zelensi uqobo ngesikhathi sokukhiqiza futhi ihlobene nezakhiwo zayo zomzimba. Ngezinto ze-resin, ezisetshenziswa kabanzi namuhla, inqubo yokukhiqiza idinga ukuthi ziqale zifudumale, bese zipholiswa kancane kancane ukuze ziqine. Kodwa-ke, kungakhathaliseki ukuthi ngesikhathi sokushisa noma sokupholisa, yonke inqubo ayilokothi ifane. Lokhu kuyiqiniso ikakhulukazi ngesikhathi sokupholisa: uma ama-molecule kwezinye izindawo eseqinile, athatha isikhala, ashiye indawo enganele yama-molecule kwezinye izindawo ezingakapholi. Ngenxa yalokho, ibanga phakathi kwama-molecule liba lincane kakhulu, okuholela ekwakhekeni kokucindezeleka ngaphakathi kwelensi.

Ukucindezeleka kwangaphandleNgakolunye uhlangothi, kubangelwa ukucubungula, ukuhlanganisa, nokusetshenziswa kwansuku zonke. Uma ilensi inkulu kakhulu noma uhlaka luluncane kakhulu ngesikhathi sokucubungula, amandla esenzo kanye nokusabela akhiqizwa phakathi kohlaka kanye nelensi, okudala inani elithile "lokucindezeleka" emaphethelweni elensi. Lolu hlobo lokucindezeleka oluvela emaphethelweni elensi lufana nalokho okuboniswe esithombeni esingezansi.

Nakuba lokhu kucindezeleka kungabonakali emehlweni, akunandawo yokucasha ngaphansi kochwepheshe umhloli wokucindezeleka ohlukaniswe nge-polarized esitolo sezinto ezibonakalayo. Uhlangothi olujwayelekile lwelensi lubonisa izithunzi ezifanayo nezingabonakali. Ngokuphambene nalokho, ilensi enokucindezeleka okukhulu izobonisa "amaphethini othingo" aqinile, imicu emnyama yemisebe, noma izithunzi ezisontekile.

Kodwa-ke, into eyodwa okumele iqondwe: kusukela ekuphumeni efektri kuya ekufakweni ohlakeni, ilensi iyadingeka. kusho ukuthini ukuba nesilinganiso esithile sokucindezeleka. Lokho okubizwa ngokuthi "ukucindezeleka okungu-zero" akunzima nje kuphela ukukufeza, kodwa kwezinye izimo, "ukucindezeleka okungu-zero" okuphelele empeleni kuyingozi.

II. Kungani "ukucindezeleka okungenakho" kuyinganekwane?

Abantu abaningi baye bamangazwa amavidiyo afundisayo aku-inthanethi, bekholelwa ukuthi noma yiluphi uphawu lwamaphethini othingo lubonisa inkinga yekhwalithi yelensi noma ubuciko obungebuhle. Bakhathazekile ngokuthi ukucindezeleka kuzolimaza amehlo abo futhi bafune ngisho nokuthi abathengisi bahlinzeke ngokuhlanganiswa okungenakucindezeleka nhlobo. Eqinisweni, lokhu kuyiphutha elikhulu.

Okokuqala, kufanele uqonde lokho noma kuphi lapho kukhona ukuxhumana, kukhona ukucindezelekaInhloso yohlaka lwezibuko zamehlo akukhona nje ukubukeka kahle; okubaluleke kakhulu, umngcele wangaphakathi kumele uqinise ilensi. Uma kungekho nhlobo ingcindezi phakathi kohlaka nelensi (okungukuthi, akukho ngcindezi), ilensi ingahlala kanjani iphephile ngaphakathi?

Ngakho-ke, ezimweni eziningi, ukugcina inani elithile lokucindezeleka kubalulekile:

• Ukuvimbela ukuzungeza kwelensi (ikakhulukazi kubantu abane-astigmatism): Lokhu kubaluleke kakhulu uma une-astigmatism futhi uthanda ozimele abayindilinga. I-Astigmatism idinga i-axis ethile. Uma kungekho ukucindezeleka phakathi kwelensi nohlaka, ilensi izokhululeka kakhulu. Ukusula nje izibuko zakho noma ukugijima kungabangela ukuthi ilensi ijikeleze ngama-degree angu-5 noma angu-10. Lokhu kususa ngokuphelele i-axis yakho ye-astigmatism, okubangela ukubona okufiphele, okuphambene, noma okuphindwe kabili.

• Izinto okufanele uzicabangele ngokuphepha: Uma ukucindezeleka kokuhlanganiswa kuphansi kakhulu (okusho ukuthi usayizi welensi awuhambisani nomngcele wohlaka), ilensi izokhululeka futhi ixegezele. Ezimweni ezimbi kakhulu, ukugoba okuncane kungabangela ukuthi ilensi iphume ngqo ohlakeni.

III. Yiziphi izimo ezingaholela ekucindezelekeni kokucubungula?

Kusukela ekucutshungulweni kuya ekugqokeni kwansuku zonke, kunezigaba ezine ezinkulu lapho ukucindezeleka kwelensi kungenzeka khona:

1. Umehluko Wokunemba Kwemishini kanye "Nomhlangano Ophoqelelwe"

Okwamanje lokhu kuyisihlukaniso sekhwalithi esikhulu embonini yezibuko zamehlo. Imishini yokugoba enembile kakhulu nethuthukisiwe ingenza ukuskena kwe-3D kwezinga le-micron futhi ilungise ngokuzenzakalelayo ingcindezi yokusika ngokusekelwe ezintweni zelensi, iqinisekise ukuthi ilensi eqoshiwe ifanelana kahle nohlaka. Ngokuphambene nalokho, imishini emidala noma engacacile kahle ivame ukusika amalensi amakhulu kakhulu. Ukuze bawafake, ochwepheshe bangase bafake ilensi ngenkani emgqeni. Lokhu kuhlanganiswa "okucindezelwe kanzima" kudala ukucindezeleka okukhulu ngokomzimba, okwenziwe.

2. Ukungqubuzana Kobume: "Amalensi Ayisicaba" vs. "Ozimele Abagobile"

Ukunikeza umbono ocacile kanye nobuhle, okwesimanje amalensi angenasiphepho zenzelwe izindawo ezisicaba kakhulu. Kodwa-ke, ozimele abaningi abathandwayo noma bezemidlalo banesivikelo esibanzi esigoqekile (ijika lohlaka). Uma uphoqa ilensi eyisicaba kuhlaka olugobile, uhlaka luzozama ukugoba ilensi, kuyilapho ilensi izama ukugoba uhlaka. Lokhu "kudonsana" ngokomzimba akudali nje kuphela ukucindezeleka okukhulu ngaphakathi kwelensi kodwa futhi kungagoba uhlaka. Kungashintsha ngisho ne-axis yelensi, kudale umphumela we-prism obangelwe lokho kushiya umuntu ogqokile ezizwa edidekile futhi edidekile.

3. Izakhiwo Zezinto Nokwanda/Ukufinyela Kokushisa

• Ozimele: Amafreyimu ensimbi aqinile awakwazi ukunwebeka futhi "awabekezeleli nhlobo" amaphutha osayizi. Ngakolunye uhlangothi, izinto zokunwebeka (njenge-TR90) zingase zinciphe kancane ngaphansi kwamazinga okushisa aphezulu ehlobo, okwandisa ingcindezi kulensi eyayingena kahle ekuqaleni. Lokhu "ukucindezeleka okubangelwa yisikhathi." Njengoba ugqoka izibuko zakho isikhathi eside, amafreyimu e-acetate angancipha futhi aguge, noma ifreyimu ingasonteka emandleni angaphandle. Lapho ukulingana okuphelele kwasekuqaleni kuba nzima kakhulu, ukucindezeleka kudaleka ngengozi.

• Amalensi: Amalensi anezinkomba eziphezulu (njenge-1.67 noma i-1.74) avame ukuphuka kalula. Uma ecindezelekile kakhulu, avame ukulimala kakhulu noma aqhekeke emaphethelweni. Ukushiya izibuko zakho emotweni zibhaka elangeni noma ukuziyisa e-sauna kungabangela ukwanda okukhulu kokucindezeleka ngenxa yokushintshashintsha kwezinga lokushisa okukhulu.

4. "Umonakalo Ongabonakali" Wokugqoka Kwansuku Zonke

Ngisho noma ukucindezeleka kuphelele lapho ushiya ifektri, imikhuba emibi yokugqoka ingaphazamisa ibhalansi. Imbangela evame kakhulu yilokhu ukukhumula noma ukufaka izibuko ngesandla esisodwaNgokuhamba kwesikhathi, amandla angalingani avela ohlangothini olulodwa aguqula uhlaka futhi ashintshe ukuma komugqa welensi. Lokhu kwandisa ukucindezelwa kwendawo kulensi, okudala ukucindezeleka kamuva esikhathini sokuphila kwengilazi.

IV. Yiziphi izingozi zokucindezeleka ngokweqile?

Uma uzizwa ungakhululekile ngenkathi ugqoke izibuko zakho, ukucindezeleka kwelensi akufanele kube yinto yokuqala efika engqondweni. Kunalokho, kufanele uqale ubheke imingcele yakho kadokotela, ukunemba kokukhiqiza, ukusebenza kokubona, kanye nokukhetha umkhiqizo. Ukucindezeleka kwelensi kufanele kucatshangelwe kuphela ngasekupheleni kohlu lwakho lokuhlola ukuxazulula izinkinga, njengoba kungavamile ukuba yisici esiyinhloko.

Kodwa-ke, uma ukungakhululeki kubangelwa ukucindezeleka kwelensi, cishe kuzoholela ku:

• Ukukhathala Okubonakalayo Okubi Kakhulu: Ukucindezeleka okungajwayelekile kuphazamisa ukujiya kokukhanya okunembile, okuholela ekuphendukezelekeni kokukhanya kwendawo. Ukuze ubone kahle, imisipha ye-ciliary emehlweni akho kumele ihlale ishintshashintsha. Ukugqoka izibuko ezinjalo isikhathi eside kungabangela kalula ukucindezeleka kwamehlo, ubuhlungu, kanye nekhanda.

• Isikhathi Sokuphila Selensi Efinyeziwe: Ingaphezulu lelensi linomphetho obonakalayo othambile. Ukucindezela nokudonsa isikhathi eside ngokomzimba kuzolula lo mphetho njengokugoqwa kwepulasitiki okweluliwe kakhulu, okwenza kube lula kakhulu ukuqhekeka nokuqhekeka (ukuhlukanisa). Ezimweni ezimbi kakhulu, kungabangela ngisho nemiphetho yelensi ukuba iqhekeke.

V. Ungakugwema kanjani ugibe lokucindezeleka kwelensi?

Ukuthola izibuko akulona nje ibhizinisi lokuthengisa; kuyindlela eqinile neyobuchwepheshe yokulethwa kwamehlo. Ukuqinisekisa ukuthi uthola isipiliyoni esibonakalayo esikhululekile, kunconywa ukuthi ukhumbule la maphuzu alandelayo lapho uthenga izibuko zakho ezilandelayo:

1. Khetha Isitolo Sobuchwepheshe Bokukhanya
Khetha izitolo zobungcweti ezihlonyiswe ngemishini yokukhiqiza enembile kakhulu futhi ugcine amazinga aqinile ekhwalithi yobuciko bazo. Ochwepheshe abanolwazi bazohlola ukuhambisana phakathi kwamalensi akho namafreyimu, balungise indawo yokugoba ngesikhathi sokugoba ukuze baqede ukucindezeleka okukhulu.

2. Cela "Ukuhlolwa Kokucindezeleka"
Uma uthatha izibuko zakho ezintsha, zizwe ukhululekile ukubuza abasebenzi ukuthi banayo yini into yokuhlola ukucindezeleka e-polarized. Ukubheka ngokushesha amalensi akho ngaphansi kokukhanya oku-polarized kuyindlela enembile kakhulu yokuhlola ikhwalithi yokwakheka.

3. Lalela Iseluleko Sohlaka Lochwepheshe
Uma ukhethe amalensi anombala okhanyayo okhanyayo, zama ukugwema amafreyimu anokugoba okugobile. Vumela amalensi nohlaka kuhlale ndawonye ngokuvumelana.

4. Yakha Imikhuba Emihle
Sebenzisa izandla zombili njalo ukufaka nokukhumula izibuko zakho, futhi uvakashele isitolo sezinto ezibonakalayo njalo ukuze ulungise futhi unakekele amafreyimu akho.