1.59 PC Polū Polū Makana Holomua
He aha ke ʻano o ka Lens Polycarbonate?
ʻO ka lens polycarbonate he lens i hana ʻia me ka polymer thermoplastic o ka hui carbonate. Ma kahi o 10 mau manawa ʻoi aku ka pale ʻana i ka hopena ma mua o ka plastik maʻamau a i ʻole nā aniani aniani. ʻOi aku ka maikaʻi o nā lens polycarbonate ma mua o nā aniani aniani e nā mea hoʻohana maka, nā mea haʻuki a me nā mea hoʻohana pale maka ʻē aʻe ma muli o kona māmā, ultra violet (UV) a me nā waiwai kū'ē i ka hopena.
Ua ʻike ʻia ka Polycarbonate i ka makahiki 1953 a ua hoʻolauna mua ʻia i ka mākeke ma 1958. Ua hoʻohana ʻia e nā astronauts i nā makahiki 1970 ma ke ʻano he mau hiʻohiʻona mahiole. I ka makahiki 1980, ua hoʻomaka nā ʻoihana e hoʻohana i ka polycarbonate ma ke ʻano he ʻokoʻa i ka plastic a i ʻole nā maka aniani. ʻO nā lens polycarbonate kahi koho akamai no ka poʻe e hana ana i nā haʻuki, nā wahi hana weliweli, i nā maka maka a me nā keiki.
Hoʻohana ʻia nā lens plastik maʻamau i ke kaʻina hana hoʻoheheʻe ʻia, ʻoiai ua hoʻomehana ʻia nā pellets polycarbonate a hiki i kahi helu heheʻe a hoʻokomo ʻia i loko o nā mole lens. Hoʻoikaika ia i nā lens polycarbonate a ʻoi aku ka paʻakikī. Eia nō naʻe, ʻaʻole kūʻokoʻa kēia mau lens a, no laila, pono i kahi uhi kūikawā.
He aha nā Lenses Holomua?
ʻO nā lens holomua he mau lens "multifocal" ʻoiaʻiʻo e hāʻawi i ka helu palena ʻole o nā ikaika lens i hoʻokahi mau aniani. Hoʻoholo ka ʻike maikaʻi loa i ka lōʻihi o ka lens e ʻae i kēlā me kēia mamao e akaka:
ʻO luna o ka lens: kūpono no ka ʻike mamao, kaʻa kaʻa, hele wāwae.
Ma waena o ka lens: kūpono no ka ʻike kamepiula, nā mamao waena.
Ma lalo o ka lens: kūpono no ka heluhelu a hoʻopau ʻana i nā hana kokoke.
ʻO wai ka mea e pono ai nā Lenses holomua?
I ko mākou mau makahiki, ʻoi aku ka paʻakikī o ka nānā ʻana i nā mea kokoke i ko mākou mau maka. He maʻi maʻamau kēia i kapa ʻia he presbyopia. Hoʻomaopopo mua ka hapa nui o ka poʻe inā pilikia lākou i ka heluhelu ʻana i ka paʻi maikaʻi, a i ʻole ke poʻo o ke poʻo ma hope o ka heluhelu ʻana, ma muli o ka luhi maka.
Hoʻolālā ʻia nā holomua no nā poʻe e pono ai ka hoʻoponopono ʻana no ka presbyopia, akā ʻaʻole makemake i kahi laina paʻa i waena o kā lākou mau lens.
Nā Pōmaikaʻi o nā Lenses Holomua
Me nā lens holomua, ʻaʻole pono ʻoe e loaʻa ma mua o hoʻokahi mau aniani me ʻoe. ʻAʻole pono ʻoe e hoʻololi ma waena o kāu heluhelu a me nā aniani maʻamau.
ʻO ka hiʻohiʻona me nā holomua hiki ke ʻano kūlohelohe. Inā hoʻololi ʻoe mai ka nānā ʻana i kahi mea kokoke i kahi mea mamao, ʻaʻole e loaʻa iā ʻoe kahi "lele" e like me ʻoe me nā bifocals a i ʻole trifocals.
Nā Kinohi o nā Lenses Holomua
He 1-2 mau pule e hoʻololi ai i ka holomua. Pono ʻoe e hoʻomaʻamaʻa iā ʻoe iho e nānā i waho o ka ʻaoʻao haʻahaʻa o ka lens ke heluhelu ʻoe, e nānā pololei i mua no ka mamao, a e nānā i kahi ma waena o nā kiko ʻelua no ka mamao waena a i ʻole ka hana kamepiula.
I loko o ka wā aʻo, hiki paha iā ʻoe ke noʻonoʻo a me ka nausea mai ka nānā ʻana i ka ʻāpana hewa o ka lens. Aia paha kekahi distortion o kou ʻike peripheral.
Pono ʻoe i ʻelua o nā Lenses Anti-blue Progressive
E like me nā kukui polū i kēia mau lā ma nā wahi a pau, anti-blue Progressive Lenses he mea kūpono ia no nā hana o loko, e like me ka nānā ʻana i ke TV, ke pāʻani ʻana ma ke kamepiula, heluhelu puke a heluhelu nūpepa, a kūpono hoʻi no ka hele wāwae i waho, kaʻa kaʻa, ka huakaʻi a me nā lole i kēlā me kēia lā a puni ka makahiki.
