1, Indlela yokukhetha?
Xa uthelekisa iiglasi, xa ufika ukukhetha ikhonkco leLens, iGlass Party ayilahlekanga?Andazi ukuba ungayikhetha njani iLens.Nantsi indlela yokukhetha ilensi efanelekileyo kwisidanga sakho.
2, Isalathiso sokuqhafaza
Isalathiso se-refractive ngumlinganiselo wesantya sosasazo lokukhanya kwi-vacuum ukuya kweso sokukhanya kwimathiriyeli yelensi.
Ukuphakama kwesalathiso se-refractive, i-Lens encinci, oko kukuthi, ubukhulu obufanayo bombindi we-Lens, inani elifanayo leedigri ze-Lens eziphathekayo ezifanayo, i-index ye-refractive ephezulu kunokunciphisa ubukhulu be-Lens Edge.Ukuphakama kwesalathiso se-refractive semathiriyeli, kunamandla ukukwazi ukukhanyela ukukhanya kwesiganeko.
Okwangoku, i-index refractive main of lens kwimarike yile: 1.56,1.61,1.67,1.74.
Ngokuqhelekileyo iparamitha yokuqala abantu abaninzi badibana nelensi sisalathiso se-refractive.Emva koko ngowona mfanekiso ucacileyo weLens yile: Ephakamileyo Isalathiso se-refractive, i-Lens encinci.
Ubuhle kunye neemfuno zobunzima, iilensi ezincinci zilukhetho oluhle.
3, inombolo ka-Abbe
Ekukhetheni iilensi, elinye igama eliphambili ledatha elihambelana neelensi linani le-abbe.Ngoko ke yintoni inombolo ye-Abeli?
Inombolo ka-Ernst Abbe ibhekisa kwi-dispersion factor, esetyenziselwa ukulinganisa ububukhali bomfanekiso welensi.Iphezulu inombolo ye-ABBE, i-dispersion encinci, icace ngakumbi kwaye iyinyani ngakumbi isiphumo esibonakalayo.
Iliso lomntu linenombolo ye-abbe ye-58.6, kwaye ngokusondeleyo inombolo ye-Ernst Abbe ye-Lens, i-lens iya kukhululeka ngakumbi.
4.Ixabiso lesalathiso esihlaziyiweyo
A, ukuba idigri yi-0-200 degrees, sincoma ukusetyenziswa kwe-1.56 i-refractive index lens.
B, ukuba idigri kwi-200-350 degrees, sincoma ukusetyenziswa kwe-1.61 i-refractive index lens.
C, ukuba idigri kwi-350-550 degrees, sincoma ukusetyenziswa kwe-1.67 i-refractive index lens.
D, ukuba i-degree ye-550-800 kunye ne-degrees ezingaphezu kwe-800, sincoma ukusetyenziswa kwe-1.74 i-refractive index lens.
5, Iingcebiso
Ukuba umgama womfundi uncinci kakhulu, okanye ubungakanani besakhelo esikhethiweyo bukhulu kakhulu, kuyacetyiswa ukuba ukwandise isalathisi se-refractive.
Xa ukhetha isakhelo, umntu kufuneka aqwalasele intsebenziswano kunye neLens:
Ubukhulu besakhelo sesakhelo, ubukhulu becala lobubanzi beLens, kunye nokutyeba kwemiphetho yesakhelo.
Musa ukucinga ukuba ukhetho lwesalathisi esiphezulu se-refractive I-Lens, yenza i-edge yeeglasi iya kuba yincinci kakhulu, le yimpazamo, kuba inani elifanayo lelensi ezenziwe ngenxa yokuba ubukhulu bomgama womfundi, i-astigmatism, i-axis, ubungakanani besakhelo. kwaye ezahlukeneyo.
Ngoko ke, xa sikhetha i-lens efanelekileyo kwisidanga sethu, kufuneka siqwalasele zonke iinkalo, ukwenzela ukuba iiglasi zikwazi ukukhululeka ukugqoka.
Ixesha lokuposa: Jul-28-2021