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1.59 Ngā karaihe whatu Polycarbonate HMC
Ko ngā karāhe kapia whānui he rauemi totoka wera, arā, he wai ngā rauemi mata, ā, ka hangaia ngā karāhe totoka i muri i te whakamahana. Ko ngā karāhe PC, e mōhiotia ana ko ngā "karāhe ātea", "karāhe ātea", e kiia ana he polycarbonate, he rauemi kirihou wera.
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1.56 Arotahi whatu arotahi rua-arotahi papatahi / porowhita / whakaranu HMC
Ko ngā karāhe arotahi-rua he karāhe mōhiti kei roto ngā rohe whakatikatika e rua, ā, e whakamahia ana mō te whakatikatika i te tirohanga tawhiti. Ko te wāhi e whakatikahia ai e ngā karāhe arotahi-rua te tirohanga tawhiti ka kiia ko te wāhi tirohanga tawhiti, ā, ko te wāhi e whakatika ana i te wāhi tirohanga tata ka kiia ko te wāhi tirohanga tata me te wāhi pānui. I te nuinga o te wā, he nui ake te wāhi tawhiti, nō reira ka kiia hoki ko te poro matua, ā, he iti ake te wāhi tata, ka kiia ko te poro iti.
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1.56 Ngā karaihe whatu HMC Porgressive
He momo arotahi maha-arotahi te arotahi a te arotahi whakamua, he rerekē i ngā mōhiti pānui tuku iho me ngā mōhiti pānui arotahi-rua. Kāore ngā arotahi whakamua e ngenge i te hiahia ki te whakarerekē tonu i te roa arotahi ina whakamahia ana ngā roa arotahi-rua, ā, kāore he rārangi mārama i waenganui i ngā roa arotahi e rua. He rārangi wehewehe. He pai ki te mau, ā, he ātaahua te āhua, ā, kua piki haere te rongonui hei whiringa pai mō te hunga whai presbyopia.
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1.56 FSV Poraka Kahurangi HMC Paninga Kahurangi Arotahi
Ko te Arotahi Poraka Kahurangi, e kiia ana hoki ko te Arotahi Tapahi Kahurangi, ko te Arotahi UV420 rānei. Ā, e rua ngā momo arotahi poraka kahurangi, ko tētahi he arotahi poraka kahurangi rauemi, ko tēnei momo he ārai i te mārama kahurangi mā te rauemi; ko tētahi atu he tāpiri i te paninga poraka kahurangi hei ārai i te mārama kahurangi. Ko te nuinga o ngā kiritaki e whiriwhiri ana i te arotahi poraka kahurangi rauemi, nā te mea he iti ake te utu me te ngāwari ki te tirotiro i tana mahi poraka, me whakamahi noa i te pene mārama kahurangi kua ranea.
