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1.71 Nā aniani ʻōlinolino Photochromic Gray HMC Blue Cut Spin
ʻO ke ʻano o ka substrate e hoʻoholo ai i ke kūpaʻa o ka lens a me ka hilinaʻi o ka uhi ʻana. ʻO ka substrate maikaʻi he moakāka a ʻālohilohi, lōʻihi ka manawa hoʻohana a ʻaʻole maʻalahi ke melemele; A ʻaʻole hoʻohana kekahi mau lens no ka manawa lōʻihi ma ka melemele, a i ʻole ka uhi ʻana. ʻO ka lens maikaʻi me ka ʻole o nā ʻōpala, nā ʻōpala, ka ʻili huluhulu, nā lua, ka lens oblique e hālāwai me ka nānā ʻana o ka mālamalama, kiʻekiʻe loa ka hoʻopau ʻana. ʻAʻohe kiko, pōhaku, kaha, pehu, māwae i loko o ka lens, a ʻālohilohi ke kukui.
ʻO ke kiʻekiʻe o ka refractive index, ʻo ka lahilahi o ka lens, a ʻo ke kiʻekiʻe o ke kumukūʻai.
