Ukukhethwa kwelensi kungacatshangelwa ezicini ezintathu: impahla, umsebenzi kanye nenkomba ye-refractive.
impahla
Izinto ezijwayelekile yilezi: amalensi engilazi, amalensi eresin namalensi ePC
Iziphakamiso: IZINGANE ezisebenzayo, kusukela ekucatshangelweni kokuphepha, ukukhetha okungcono kakhulu kwamalensi e-resin noma ama-PC lens, iziguli eziphakeme ze-myopia zazikhethe kangcono ama-lens engilazi, abantu abadala bangakhethwa ngokuvumelana nezithakazelo zomuntu siqu, izimo zezomnotho ezifanele izinto ze-lens.
Amalensi engilazi
Ukuqina okuphezulu, i-lens akulula ukukhiqiza imihuzuko, kodwa akukho ukuqina, kulula ukuphuka lapho ishaywa;Ukucaca okuphezulu, ukudluliswa kokukhanya okungama-92%;Ukusebenza kwamakhemikhali okuzinzile, kungamelana nethonya lazo zonke izinhlobo zesimo sezulu esibi, futhi ungafaki umbala, ungafi;Kodwa i-fragile, isisindo esinzima, asifanele intsha ukuba igqoke.
Amalensi e-resin
Ilula kakhulu kunengilazi, inciphisa ukucindezela komuntu ogqokile okubangelwa isibuko, ngokunethezeka;Ukuphikiswa komthelela, akulula ukwephula, noma ngabe kugqekezwe ku-Angle e-obtuse, akukho bungozi emehlweni abantu;Ingadaywa ngemibala ehlukahlukene, umsebenzi wenkungu ungcono kunengilazi;Kodwa ukumelana nokugqoka kwe-lens kumpofu, kulula ukuphuka, inkomba ephansi ye-refractive, ikhulu kakhulu kuneshidi lengilazi izikhathi ezingu-1.2-1.3.
Amalensi e-PC
Ukuqina okuqinile, akulula ukuphuka, ukumelana komthelela omkhulu, inkomba ephezulu ye-refractive kanye namandla adonsela phansi aqondile, kunciphisa kakhulu isisindo se-lens, ukuvikelwa kwe-UV 100%, iminyaka engu-3-5 akukho ukuphuzi;Kodwa ukucubungula kunzima kakhulu, kulula ukunwaya ubuso, ukuzinza okushisayo akukuhle, ama-degree angu-100 azothambile.Amalensi ezinto ze-PC ajwayele ukusetshenziselwa izibuko zelanga, avele kancane esibukweni sokubona, asetshenziswa ezingilazini eziyisicaba.
umsebenzi
Imisebenzi evamile ihlanganisa: i-aspheric lens, i-spherical lens, i-sunshade lens, i-anti-blue light lens, i-anti-fatigue lens, i-multi-focal lens, njll. Ngokuhambisana nempilo yabo nokusebenzisa uhlobo lomsebenzi welensi ehambisanayo.
I-aspheric surface lens
I-aspheric lens ihlanganisa ukugxila.Amalensi aspherical amalensi amaredi awo ephoyinti ngalinye phezulu anqunywa isibalo se-multiimage yohlelo oluphakeme.I-radian yayo engaphezulu ihlukile kuleyo yelensi eyindilinga evamile, ngakho-ke kuyadingeka ukushintsha ingaphezulu lelensi ukuze ulandele ubuncane belensi.Idizayini eyindilinga eyayisetshenziswa esikhathini esidlule yandisa ukuchezuka nokuguquka, okuholela ezithombeni ezisobala ezingacacile, umkhathizwe ohlanekezelwe, umbono omncane nezinye izenzakalo ezingathandeki.Idizayini yamanje ye-aspheric ilungisa isithombe, ixazulula ukuhlanekezela komkhathizwe nezinye izinkinga, futhi yenza i-lens ibe lula, ibe mncane futhi ibe isicaba, okwenza ogqokile abe ngokwemvelo futhi abe muhle.
Amalensi ayindilinga
Ukuphenduka okuyindilinga kwamalensi ayindilinga.Ilensi eyindilinga yileyo lapho izinhlangothi zombili zelensi ziyi-spherical, noma uhlangothi olulodwa luyisiyingi kanti olunye luyisicaba.Ngokuvamile kuba mkhulu, futhi ngokusebenzisa ilensi ukubona izinto ezizungeze ukuhlanekezela, deformation kanye nezinye izenzakalo, okuthiwa aberration.Ngokubuka ogqokile ngelensi eyindilinga, ukuwohloka kokwakheka kobuso nakho kungatholakala ngokusobala.Amalensi ayindilinga ngokuvamile alingana ngaphansi kwamadigri angu-400.Uma izinga liphakeme, i-lens izoba mkhulu futhi ingcindezi ekhaleni izoba mkhulu.Lokhu futhi kuwububi bamalensi ayindilinga uma kuqhathaniswa namalensi aspheric.
Ngokuvamile, uma iqhathaniswa ne-aspheric lens, i-aspheric lens enento efanayo nedigri iphansi, izacile, ingokoqobo kakhulu, ingokwemvelo futhi inethezekile, exazulula inkinga yokuthi ilensi eyindilinga yendabuko inokuhlanekezela lapho ubuka izinto ezizungezile.Ilensi eyindilinga evamile ikhawulela inkambu yokubuka yomuntu oyigqokile, kuyilapho ilensi ye-aspheric inciphisa ukujika konqenqema ukuya phansi, futhi umkhakha wayo obanzi wokubuka ungahlangabezana nezidingo eziningi zamakhasimende.
Ilensi yokuvimbela ukukhanya okuluhlaza okwesibhakabhaka
Amalensi okuvimbela aluhlaza yizibuko ezivimbela ukukhanya okuluhlaza okwesibhakabhaka ekucasuleni amehlo akho.Ivikela amehlo emonakalweni wokukhanya okuluhlaza okwesibhakabhaka ngokuvimba futhi ibonise ukukhanya okuluhlaza okwesibhakabhaka kwamagagasi amafushane anamandla amakhulu ngamalensi abalulekile.Izibuko ezikhanyayo eziluhlaza okwesibhakabhaka zilungele abantu abavame ukudlala ngamakhompiyutha nomakhalekhukhwini.
I-sunshade lens
Yaziwa nangokuthi ilensi yelanga.Abantu elangeni ngokuvamile bancike kusayizi womfundi ukuze balungise ukugeleza kokukhanya ukuze bagweme ukulimala kokukhanya okunamandla esweni.Ngokuvamile ihlukaniswe izigaba ezintathu:
(1) Amalensi ashintsha umbala:
Umphumela oyinhloko ukuvikela amehlo nokuvimbela ukukhuthazwa kokukhanya okunamandla.Amalensi awanambala ngaphakathi endlini, kodwa ashintsha ukusuka kokungabi mbala ukuya kombala lapho evezwe ekukhanyeni okunamandla ngaphandle.Uma ukhetha imibala yamalensi ashintsha umbala, ngokuvamile kuyanconywa ukuba ukhethe imibala emithathu: tan, green, and gray.Ngenxa yokuthi le mibala emithathu ihambisana nefiziyoloji ebonakalayo, yenza ngcono ukugqama okubonakalayo nokucija, futhi ngeke iguqule umbala wangempela wesigcawu ngenxa yelensi.
(2) Amalensi anebala:
Ukuvimbela ukuvuselela kwelanga okunamandla okubangelwa ukulimala kwamehlo.Amalensi adaywe ngemibala ehlukene ngenqubo ethile ukuze ahlangabezane nezidingo zezindawo ezibukwayo ezihlukene.Amalensi anebala awafanele ukusetshenziswa endlini ngoba angaphazamisa imiphumela yokubuka.IBALA LOMbala ENGANIKEZA NGOKWEMQISHI NGOKUVAMILE, UMUNTU NGAMUNTU AYATHOLAKALA FUTHI ASEBENZISE INDAWO UKUNQUMULA UKUKHETHA IMIBALA.
(3) I-Polarizing lens:
Ilensi evumela ukukhanya kuphela endaweni ethile ye-polarization yokukhanya kwemvelo ukuthi kudlule.Ukuze unciphise ukungakhululeki okubukwayo okubangelwa ukukhanya, kufanelekile kakhulu emidlalweni yangaphandle.Isibonelo: imidlalo yasolwandle, ukushushuluza kanye nokudoba.
Ilensi ekwazi ukumelana nokukhathala
Ilensi evamile yokulwa nokukhathala ingeza +50~+60 degree lomthwalo wokulungisa kulens ngokuvumelana nesimiso sesiqephu esifanayo esiqhubekayo, ithuthukisa ukukhanya kwe-myopia, ibuyisela ukunyakaza kwe-microwave kokujwayelekile, ibuyisela ibhalansi yohlelo lokulungisa lwezibuko, futhi ufeza umsebenzi ngaphandle kokukhathala, ngaleyo ndlela ufeze "ukunciphisa" okuphelele kwamehlo.
Amalensi amaningi agxile
Okunye okubizwa ngokuthi i-progressive multiplefocal lens, iwukukhomba kule lensi efanayo kuphela endaweni futhi indawo ecishe iphele phakathi, nge-diopter, uguquko kancane kancane olusuka kude ngokusondela kancane kokusetshenziswa ukufundwa kuzoba ukukhanya okuningi futhi kucishe kuphele i-organic. ndawonye, ngakho-ke kwi-lens ngesikhathi esifanayo bheka ibanga, ibanga eliphakathi futhi uvale ukukhanya okudingekayo okuhlukile.
Inkomba ye-refractive
Amalensi e-resin avamise ukuba: 1.50, 1.56, 1.60, 1.67, 1.74 refractive index
Amalensi engilazi ajwayelekile ane: 1.8 kanye ne-1.9 refractive index
Ngokuvamile, i-lens ene-refractive index ephakeme ikhiqiza ilensi encane.Yiqiniso, inkomba ye-refractive akuyona ukuphela kwesici esinquma ukushuba kwelensi.Ibanga lomfundi kanye nosayizi wefreyimu nakho kuthinta ukushuba kwelensi.Ibanga lomfundi likhulu, uhlaka luba luncane, ilensi iba mncane.Isibonelo, uma kukhethwa ilensi engu-1.56, ilensi enebanga lomfundi elingu-68mm izacile kakhulu kunelensi enebanga lomfundi elingu-58mm.Lokhu kungenxa yokuthi uma i-lens iqhelelene nendawo okugxilwe kuyo, izoba mkhulu kakhulu.Bheka ithebula lokuqhathanisa ukukhetha okunengqondo kwelensi yenkomba ye-refractive efanelekile, ngokuvamile lapho inkomba ye-refractive yentengo yelensi iba phezulu, gwema ukukhetha okungaboni kwelensi yenkomba ephezulu ye-refractive.
Isikhathi sokuthumela: Sep-10-2022