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Iilensi ze-1.67 Spin Photochromic Gray HMC Optical
Iilensi ezitshintsha umbala, ezaziwa ngokuba “ziilensi ezibona ukukhanya”. Ngokomgaqo we-photochromatic tautometry reversible reaction, ilensi inokuba mnyama ngokukhawuleza phantsi kokukhanya kunye ne-ultraviolet irradiation, ivale ukukhanya okuqinileyo kwaye ifunxe ukukhanya kwe-ultraviolet, kwaye ibonise ukufunxwa okungathathi cala kokukhanya okubonakalayo. Ukubuyela ebumnyameni, inokubuyisela ngokukhawuleza imeko ecacileyo engenambala, iqinisekise ukudluliselwa kwelensi. Ke ngoko, iilensi ezitshintsha umbala zifanelekile ukusetyenziswa ngaphakathi nangaphandle ngaxeshanye ukuthintela umonakalo welanga, ukukhanya kwe-ultraviolet kunye nokukhanya kwamehlo.
