Me ka hoʻonui ʻana i ka ʻike ʻai ʻana o nā mea kūʻai aku, ʻaʻole wale ka nui o nā mea kūʻai aku e nānā i ka lawelawe o ka hale kūʻai hoʻohana, akā e uku nui ana i ka ʻike o kā lākou huahana i kūʻai ʻia (lenses).He maʻalahi ke koho ʻana i nā maka aniani a me nā kiʻi, no ka mea, aia ke ʻano a maopopo ka makemake o kekahi, akā i ka wā e koho ai i nā lens, hoʻomaka ka lolo o kekahi.ʻElua mau lens akaka, a he ʻokoʻa wale nā kumukūʻai, refractive index, Abbe number, anti-blue light, anti-fatigue… aia kahi manaʻo o ka hāʻule koke ʻana!
I kēia lā, e kamaʻilio wale kākou e pili ana i ka haki ʻana i ka ʻōlelo huna o kēia mau ʻāpana o nā lens!
I. Helu Hoopaa
ʻO ka helu helu refractive ka mea i ʻōlelo pinepine ʻia i nā lens, i wehewehe ʻia ʻo ia ka ratio o ka wikiwiki o ka hoʻolaha ʻana o ka māmā i ka lewa a i ka lens.He paʻakikī ia, akā maʻalahi loa.ʻO ka hoʻolaha māmā i ka lewa he wikiwiki loa, a ua wehewehe kēia ʻāpana i ka nui o ko lākou ʻokoʻa mai kekahi i kekahi.Ma o kēia ʻāpana, hiki iā mākou ke ʻike i ka mānoanoa o ka lens.
ʻO ka mea maʻamau, ʻike ʻia ʻo ke kiʻekiʻe o ka helu refractive, ʻoi aku ka lahilahi o ka lens a ʻoi aku ka maikaʻi o ka lens.
ʻO ka index refractive o resin ka mea maʻamau: 1.499, 1.553, 1.601, 1.664, 1.701, 1.738, 1.76, etc. ʻO ka mea maʻamau, ʻōlelo ʻia e hiki i nā poʻe me ka ʻike kokoke o -3.00D a i ʻole ke koho i nā lens ma waena o 1.499 a me 1.499;Hiki i nā poʻe me ka ʻike kokoke -3.00D a -6.00D ke koho i nā lens ma waena o 1.601 a me 1.701;a hiki i nā poʻe me ka ʻike kokoke ma luna o -6.00D ke noʻonoʻo i nā lens me ka helu kuhikuhi refractive kiʻekiʻe.
II.Ka Helu Abbe
Ua kapa ʻia ka helu Abbe ma hope o Dr. Ernst Abbe a wehewehe nui i ka hoʻopuehu ʻana o ka lens.
Lens Dispersion (Abbe Number): Ma muli o nā ʻokoʻa o ka ʻōlelo kuhikuhi no nā hawewe like ʻole o ka mālamalama i loko o ke ʻano māmā like ʻole, a me ke kukui keʻokeʻo i haku ʻia me nā ʻano hawewe like ʻole o ke kukui kala, e ʻike nā mea aniani i kahi hanana kūikawā o ka hoʻopuehu ʻana i ka wā e hoʻohuli ai i ke kukui keʻokeʻo. like me ke kaʻina hana e hoʻopuka ai i ke ānuenue.ʻO ka helu Abbe kahi hōʻailona like ʻole e hōʻike ana i ka hiki ke hoʻopuehu o nā mea alohilohi, me kahi waiwai liʻiliʻi e hōʻike ana i ka hoʻopuehu ikaika.ʻO ka pilina ma ka lens: ʻoi aku ka kiʻekiʻe o ka helu Abbe, ʻoi aku ka liʻiliʻi o ka hoʻopuehu ʻana a ʻoi aku ka kiʻekiʻe o ka ʻike maka.ʻO ka helu Abbe ma waena o 32 a 59.
III.Mana Hoohuoi
Hoʻopili maʻamau ka mana refractive i 1 a 3 mau ʻāpana ʻike, me ka mana spherical (ʻo ia hoʻi ka myopia a i ʻole hyperopia) a me ka mana cylindrical (astigmatism) a me ke axis o ka astigmatism.Hōʻike ka mana spherical i ke degere o ka myopia a i ʻole hyperopia a ʻo ka mana cylindrical e hōʻike ana i ke degere o ka astigmatism, aʻo ke axis o ka astigmatism hiki ke manaʻo ʻia ke kūlana o ka astigmatism a ua māhele ʻia me ka lula (horizontally), kūʻē i ka lula (vertically), a axis oblique.Me ka mana cylindrical like, e kūʻē i ka lula a me ke axis oblique hiki ke paʻakikī ke hoʻololi.
No ka laʻana, ʻo kahi ʻōlelo kuhikuhi o -6.00-1.00X180 e hōʻike ana i kahi myopia o 600 degere, astigmatism o 100 degere, a me kahi axis o astigmatism ma ke kuhikuhi 180.
IV.Mālamalama ʻulaʻula
ʻO ka pale kukui ʻulaʻula kahi huaʻōlelo kaulana i nā makahiki i hala iho nei, no ka mea, ua hoʻopuka ʻia ke kukui polū mai nā pale LED a i ʻole nā kukui a ʻike ʻia kona pōʻino me ka hoʻohana nui ʻana o nā huahana uila.
Ka manawa hoʻouna: Feb-21-2023