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1.71 Blue Cut Spin Photochromic Grey HMC Optical lo ntsiab muag
Qhov zoo ntawm substrate txiav txim siab lub durability ntawm lub lens thiab kev ntseeg siab ntawm cov txheej.Cov substrate zoo meej thiab ci, siv sijhawm ntev thiab tsis yooj yim rau daj;Thiab qee qhov lo ntsiab muag tsis siv sijhawm ntev ntawm cov xim daj, lossis txawm tias txheej tawm.Zoo lens tsis muaj khawb, khawb, plaub hau nto, pitting, lens oblique kom tau raws li lub teeb pom kev, qhov tiav yog siab heev.Tsis muaj qhov chaw, pob zeb, kab txaij, npuas, tawg hauv lub lens, thiab lub teeb ci.
Qhov siab dua qhov refractive index, qhov thinner lub lens, thiab tus nqi siab dua.
