1, Izinto kunye neeCategories
Ngokubhekiselele kwizinto eziphathekayo, zinokuhlulwa zibe ziindidi ezine: iglasi, iPC, i-resin kunye neelensi zendalo.Eyona nto isetyenziswa kakhulu yintlaka.
I-Spherical and aspherical: ikakhulu thetha ngeelensi ze-aspherical, i-advanteji yeelensi ze-aspherical kukuba ukuguqulwa kwe-lens edge kuncinci.
Ngale ndlela, i-lens inomfanekiso omhle, akukho kuphazamiseka, kunye nentsimi ecacileyo yokujonga.
Kwaye phantsi kwezinto ezifanayo kunye neqondo, iilensi ze-aspherical zithe tyaba kwaye zincinci kunee-spherical lens.
Izidanga kunye neRefractive Index
Ngokuqhelekileyo, kucetyiswa ukuba ukhethe i-lens enesalathisi esiphezulu se-refractive.Ukuphakama kwesalathisi se-refractive, i-lens encinci.
Kodwa nikela ingqalelo kwingxaki, oko kukuthi, isalathisi esiphezulu se-refractive index, impembelelo kwinombolo ye-Abbe, musa ukulandela ngokungaboniyo i-index refractive index, uhlalutyo oluthile lweengxaki ezithile.
2, inombolo Abbe kunye nokwaleka
I-coefficient ye-Abbe ebizwa ngokuba yi-coefficient ye-dispersion, eyaziwa ngokuba yi-coefficient ye-dispersion, idla ngokubizwa ngokuba ngumphetho weeglasi ukubona into esondeleyo kwiliso lomntu ngaphandle komphetho omfusa, i-yellow edge kunye ne-blue edge.Ngokuqhelekileyo, okukhona isalathiso se-refractive se-medium, i-dispersion ibaluleke kakhulu, oko kukuthi, inani le-Abbe lisezantsi.Oku kukwaphendula isizathu sokuba kuthiwe ngentla ukuba isalathiso se-refractive akufuneki silandelwe ngobumfama.
(Beka ibhodi ebhodini: Ukukhanya okufanayo kunezalathisi eziphinda-phindayo ezahlukeneyo zobude bamaza okukhanya ohlukeneyo. Umzekelo, ukuphinda-phindwa kokukhanya kwelanga ngeprism kuya kubonisa imibala esixhenxe yokukhanya, into ke leyo yokusasazwa.)
Okulandelayo, makhe sithethe ngokutyabeka kwelensi.I-lens elungileyo iya kuba nemigangatho emininzi yokugquma.
I-mold top ayinamanzi kunye ne-oil-proof;ifilimu echasene nomboniso ivumela ukukhanya okungakumbi:
Ifilimu yokukhupha i-electrostatic yenza ukuba uthuli lungabi lula ukufunxa;ifilimu enzima inokukhusela i-lens kwaye yenza ukuba kungabi lula ukukrazula kunye nokunye.
3. Ilensi esebenzayo
Ukuthetha ngokunyanisekileyo, malunga nokusebenza kweelensi.
Kwakhona ndacinga ukuba kwakungenakuchazwa ngaphambili, i-lens ayikuncedi i-myopia ukubona izinto ngokucacileyo, ivela phi imisebenzi emininzi kangaka?Okona kuninzi, ndiyazi kuphela ukuba kukho iilensi ezinokukhanya okuluhlaza okwesibhakabhaka, de kube emva kokuba ndijonge ulwazi oluninzi (Nkosi, ndiye ndaqonda!)
Kuvela ukuba ineendidi ezininzi!(Nangona andikhumbuli emva kokuyifunda)
Nangona kunjalo, ngenxa yolwazi olubanzi lwenqaku, kwagqitywa ekubeni lisombululwe.
I-Anti-blue light lens:Oku akufuneki ukuba kungeniswe kakhulu.Njengoko igama libonisa, inokudlala indima yokukhanya okuchasene nohlaza okwesibhakabhaka.Kuyafaneleka ngakumbi kubahlobo abadla ngokujonga iiselfowuni kunye neekhompyuter.
B Ilensi ezininzi eziqhubelekayo:Olu hlobo lwelensi luthetha ukuba kukho iindawo ekugxilwe kuzo ezininzi kwilensi enye, kwaye izinto ezikwimigama eyahlukeneyo zinokubonwa ngokucacileyo ngokuguqulwa komgama wokubona.Oko kukuthi, le lens inokuba nokukhanya okwahlukileyo okufunekayo ukubona umgama omde, umgama ophakathi kunye nomgama osondeleyo ngaxeshanye.
- Ineendidi ezintathu:
- ifilimu yenkqubela phambili yabantu abadala (iiglasi zokufunda): Le kufuneka ibe yeyona ixhaphakileyo.Ifanelekile zombini i-myopia kunye ne-presbyopia.
- Iilensi zokulawula i-myopia yolutsha - zisetyenziselwa ukunciphisa ukukhathala okubonakalayo kunye nokulawula isantya sophuhliso lwe-myopia.Ilensi “yomfundi olungileyo” yenye enjalo.
- b Iilensi zokulwa nokudinwa kwabantu abadala - kubadwelisi benkqubo kunye nabanye abahlobo abasoloko bejongana neekhompyuter.Ngamanye amazwi, uninzi lweemvakalelo zezokuthuthuzela ngokwasengqondweni kuphela.Eyona nto ibalulekileyo kukudibanisa umsebenzi kunye nokuphumla, kwaye uphumle ngokufanelekileyo.
- c Iilensi ezitshintsha umbala.Xa udibana nokukhanya okunamandla kwe-ultraviolet, kuya kuba mnyama ngokuzenzekelayo kwaye kuvimbele ukukhanya okunamandla kwe-ultraviolet ngaphandle.Xa ubuyela kwindawo emnyama efana nengaphakathi, iya kukhanya ngokuzenzekelayo ukuqinisekisa ukucaca kombono.
Ixesha lokuposa: Jan-17-2022