1. Ungakhetha kanjani?
Uma kuqhathaniswa izibuko, lapho kufika ukukhetha isixhumanisi se-Lens, i-Glasses Party ayilahleki?Angazi Ukuthi Ungayikhetha Kanjani Ilensi.Nansi indlela yokukhetha ilensi efanele yeziqu zakho.
2. Inkomba ye-refractive
Inkomba ye-refractive isilinganiso sejubane lokusabalalisa lokukhanya ku-vacuum naleyo yokukhanya kokokusebenza ilensi.
Uma iphezulu inkomba ye-refractive, i-Lens iba izacile, okungukuthi, ukujiya okufanayo kwesikhungo se-Lens, inani elifanayo lamadigri e-Lens material efanayo, iba phezulu inkomba ye-refractive kunokuncipha kogqinsi lwe-Lens Edge.Ukuphakama kwenkomba ye-refractive yento, kulapho amandla okuguqula ukukhanya kwesigameko aqine.
Njengamanje, inkomba eyinhloko ye-refractive yamalensi emakethe yilezi: 1.56,1.61,1.67,1.74.
Imvamisa ipharamitha yokuqala abantu abaningi abahlangana nayo ilensi yinkomba ye-refractive.Bese iwumfanekiso onembile kakhulu weLens uthi: The Higher The refractive index, iLens ibe mncane.
Ngezidingo zobuhle nesisindo, ama-lens amancane ayisinqumo esihle.
3. Inombolo ka-Abbe
Ekukhetheni amalensi, elinye igama ledatha elingukhiye elihlotshaniswa namalensi inombolo ye-abbe.Ngakho ithini inombolo ye-Abelian?
Inombolo ka-Ernst Abbe ibhekisela ku-dispersion factor, esetshenziselwa ukukala ukucija kwesithombe silensi.Ukuphakama kwenombolo ye-ABBE, kuncane ukuhlakazeka, umphumela obonakalayo ucace futhi ube namaqiniso.
Iso lomuntu linenombolo ye-abbe engu-58.6, futhi uma isondela inombolo ye-Ernst Abbe ye-Lens, i-lens izokhululeka kakhulu.
4. Inani lenkomba lerefractive
A, uma idigri ingu-0-200 degrees, sincoma ukusetshenziswa kwamalensi enkomba e-refractive angu-1.56.
B, uma idigri in 200-350 degrees, sincoma ukusetshenziswa 1.61 refractive index lens.
C, uma idigri in 350-550 degrees, sincoma ukusetshenziswa 1.67 refractive index lens.
D, uma idigri engu-550-800 degrees nangaphezulu kuka-800 degrees, sincoma ukusetshenziswa kwamalensi enkomba e-refractive angu-1.74.
5, Amathiphu
Uma ibanga lomfundi lilincane kakhulu, noma usayizi wozimele okhethiwe mkhulu kakhulu, kutuswa ukuba kwandiswe inkomba ye-refractive.
Lapho ukhetha uhlaka, umuntu kufanele acabangele ukusebenzisana ne-Lens:
Uma usayizi wohlaka ube mkhulu, ubukhulu be-Lens bukhulu, futhi kuba mkhulu emaphethelweni ohlaka.
Ungacabangi ukuthi ukukhetha inkomba high refractive Lens, wenze onqenqemeni izibuko kuyoba mncane kakhulu, lokhu kuyiphutha, ngoba inani elifanayo lens ezenziwe ngoba ukushuba we ibanga umfundi, astigmatism, eksisi, usayizi ifreyimu. futhi ezahlukene.
Ngakho-ke, lapho sikhetha i-lens efanelekile ngezinga lethu, kufanele sicabangele zonke izici, ukuze izibuko zikhululeke kakhulu ukugqoka.
Isikhathi sokuthumela: Jul-28-2021