1.523 Iglasi yeBifocal Photochromic Photogrey Optical Lens

Xa ulungelelwaniso lwamehlo omntu lubuthathaka ngenxa yobudala, kufuneka alungise umbono wakhe ngokwahlukileyo kumbono okude nokufuphi.Ngeli xesha, uhlala efuna ukunxiba iiperi ezimbini zeeglasi ngokwahlukeneyo, nto leyo engathandekiyo kakhulu.Ke ngoko, kuyafuneka ukuba usila amandla amabini ahlukeneyo okuphinda-phinda kwilensi enye ukuze abe ziilensi kwiindawo ezimbini.Iilensi ezinjalo zibizwa ngokuba zii-bifocal lens okanye ii-bifocal glasses.

Uhlobo lwe-Fusion:kukudibanisa izinto ze-lens kunye nesalathisi esiphezulu se-refractive kwindawo ye-concave kwi-plate ephambili kwiqondo lokushisa eliphezulu, kunye ne-index refractive ye-plate ephambili iphantsi.Emva koko ugijime kumphezulu we-sub-piece ukwenza i-curvature ye-sub-piece surface ihambelane neyona nto iphambili.Akukho luvo lokucandwa kwemida.Ukufunda okungaphezulu kwe-A kuxhomekeke kumandla okuhlaziya i-F1 yobuso obuphambili bebala elikude lombono, i-Curvature FC ye-original concave arc kunye ne-fusion ratio.Umyinge wodibaniso lubudlelwane obusebenzayo phakathi kwesalathiso serefractive semathiriyeli yelensi yesigaba ezibini, apho i-n imele isalathiso sokuphinda siqhawuke seglasi engundoqo (idla ngokuba yiglasi yesithsaba) kwaye u-ns umele isalathiso sokuqhambuka sephepha elisezantsi (iglasi yelitye lenyengane) kunye ixabiso elikhulu, ngoko udibaniso lodibaniso k=(n-1)/(nn), ngoko ke A=(F1-FC)/k.Inokubonwa kule fomyula ingasentla ukuba ithiyori, ukutshintsha igophe langaphambili leplate ephambili, i-concave arc curvature kunye ne-sub-plate refractive index inokutshintsha idigri eyongezelelweyo ekufutshane, kodwa eneneni, ifumaneka ngokubanzi ngokutshintsha. isalathiso se-sub-plate refractive.Itheyibhile 8-2 ibonisa isalathiso esiphinda-phindayo sephepha elisezantsi leglasi yelitye eliqhelekileyo elisetyenziswa ehlabathini ukwenza izipili ezidityanisiweyo ezahlukeneyo.