Ka whakatikahia e ngā karāhe mōhiti ngā hapa whakaata mā te piko (whakaata) i te mārama i a ia e haere ana i roto i te karāhe. Ko te nui o te kaha ki te piko i te mārama (te mana o te karāhe) e hiahiatia ana hei whakarato tirohanga pai ka tohua i runga i te whakahaunga mōhiti i homai e tō tohunga tirohanga.
Ko ngā hapa tirohanga me te kaha o te arotahi e hiahiatia ana hei whakatika i aua hapa ka inehia i roto i ngā waeine e kiia nei ko ngā diopters (D). Mena he poto noa tō tirohanga, tera pea ka kīia e tō whakahaunga arotahi he -2.00 D. Mena he tino pōuri tō tirohanga, tera pea ka kīia e -8.00 D.
Mena he kanohi roa tōu, me whakamahi koe i ngā karāhe "plus" (+), he matotoru ake te pokapū, he angiangi ake te taha.
Mō te hunga he nui te tirohanga poto, te tirohanga roa rānei, ka tino matotoru, ka tino taumaha hoki ngā karaihe karāhe, kirihou rānei noa.
Waimarie, kua waihangahia e ngā kaihanga he maha ngā rauemi karaihe kirihou "taurangi-tiketike" hou e pai ake ai te whakapiko i te mārama.
Ko te tikanga o tēnei he iti ake ngā rauemi ka taea te whakamahi i roto i te arotahi taupū-teitei hei whakatika i te nui o te hapa whakaata, e hanga ana i ngā arotahi kirihou taupū-teitei kia angiangi ake, kia māmā ake i ngā arotahi karāhe, kirihou rānei tikanga.
Ngā painga o ngā arotahi taupū teitei
Angiangi
Nā te kaha ki te whakapiko i te mārama me te whai hua ake, he angiangi ake ngā taha o ngā karāhe arotahi teitei-taurangi mō te hunga kanohi poto i ngā karāhe arotahi he rite te kaha ki te whakamahi i ngā mea kirihou noa.
Māmā
He iti ake te rauemi karaihe e hiahiatia ana mō ngā taha angiangi, ā, ka whakaitihia te taumaha katoa o ngā karaihe. He mama ake ngā karaihe i hangaia ki te kirihou taupū teitei i ngā karaihe ōrite i hangaia ki te kirihou noa, nō reira he pai ake te mau.
Ko te nuinga o ngā karāhe arotahi teitei-taupū he hoahoa aspheric, e hoatu ana ki a rātou he āhua angiangi ake, he ātaahua ake, ā, ka whakaiti i te āhua whakanuia e puta mai ana i ngā karāhe arotahi tikanga i roto i ngā rongoā tirohanga roa kaha.
Ngā kōwhiringa arotahi taupū-teitei
Kei te wātea ngā karāhe kirihou taupū teitei i roto i te whānuitanga o ngā taupū whakaata, mai i te 1.60 ki te 1.74. Ko ngā karāhe he taupū whakaata o te 1.60 me te 1.67 ka taea te angiangi ake i te 20 ōrau neke atu i ngā karāhe kirihou tuku iho, ā, ko te 1.71, neke atu rānei, ka taea te angiangi ake i te 50 ōrau neke atu.
Waihoki, i te nuinga o te wā, ki te teitei ake te taupū, ka nui ake te utu o ngā karaihe arotahi.
Mā tō tohutohu mōhiti ka whakatau ko tēhea momo rauemi taupū-teitei e hiahiatia ana e koe mō tō karāhe. Ko ngā rauemi taupū-teitei te nuinga o te wā ka whakamahia mō ngā tohutohu tino kaha.
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