Izibuko zamehlo zasungulwa nini ngempela?
Nakuba imithombo eminingi ithi izibuko zamehlo zasungulwa ngo-1317, umqondo wezibuko kungenzeka ukuthi waqala ngo-1000 BC Eminye imithombo ithi uBenjamin Franklin wasungula izibuko, futhi nakuba asungula ama-bifocal, lo msunguli odumile akanakudunyiswa ngokudala izibuko ngokujwayelekile.
Ezweni lapho abantu abangu-60% bedinga uhlobo oluthile lwamalensi okulungisa ukuze babone kahle, kunzima ukucabanga ngesikhathi lapho izibuko zamehlo zazingekho khona.
Yiziphi izinto ezazisetshenziswa ekuqaleni ukwenza izibuko?
Amamodeli anengqondo ezibuko zamehlo abukeka ehlukile kancane kunezibuko zikadokotela esizibonayo namuhla — ngisho namamodeli okuqala ayehlukahluka kuye ngamasiko.
Abasunguli abahlukene babenemibono yabo yokuthi bangathuthukisa kanjani ukubona besebenzisa izinto ezithile. Isibonelo, amaRoma asendulo ayazi ukuthi angawenza kanjani amaglasi futhi asebenzisa lezo zinto ukudala uhlobo lwawo lwezibuko zamehlo.
Abasunguli base-Italy basheshe bafunda ukuthi ikristalu yedwala ingenziwa ibe yi-convex noma ibe yi-concave ukuze inikeze izinsiza ezibonakalayo ezahlukene kulabo abanokukhubazeka okuhlukile kokubona.
Namuhla, amalensi ezibuko zamehlo ngokuvamile ayipulasitiki noma ingilazi futhi ozimele bangenziwa ngensimbi, ipulasitiki, ukhuni ngisho nekhofi (cha, iStarbucks ayithengisi izibuko — okwamanje).
Ukuvela kwezibuko zamehlo
Izibuko zokuqala zamehlo zaziyisisombululo esifanela wonke umuntu, kodwa akunjalo neze namuhla.
Ngoba abantu banezinhlobo ezahlukene zokukhubazeka kokubona —i-myopia(ukubona eduze),i-hyperopia(ukubona kude),i-astigmatism,i-amblyopia(i-lazy eye) nokuningi — amalensi ezibuko zamehlo ahlukene manje alungisa la maphutha okubona.
Nazi ezinye zezindlela izibuko eziye zathuthuka futhi zathuthuka ngazo ngokuhamba kwesikhathi:
Ama-Bifocal:Nakuba amalensi aqondile esiza labo abane-myopia kanyeamalensi aqondilei-hyperopia efanele kanye ne-presbyopia, kwakungekho ikhambi elilodwa lokusiza labo ababenezinkinga zombili zokukhubazeka kokubona kwaze kwaba ngu-1784. Ngiyabonga, Benjamin Franklin!
Ama-Trifocal:Eminyakeni engamashumi amahlanu ngemva kokusungulwa kwama-bifocal, kwavela ama-trifocal. Ngo-1827, uJohn Isaac Hawkins wasungula amalensi ayesiza labo abanezinkinga ezinkulu.i-presbyopia, isimo sokubona esivame ukuhlasela ngemva kweminyaka engu-40. I-Presbyopia ithinta ikhono lomuntu lokubona eduze (amamenyu, amakhadi okupheka, imiyalezo).
Amalensi ahlanganisiwe:U-Edwin H. Land wadala amalensi ane-polarized ngo-1936. Wasebenzisa isihlungi se-polaroid lapho enza izibuko zakhe zelanga. I-Polarization inikeza amakhono okulwa nokukhanya kanye nenduduzo yokubuka ethuthukisiwe. Kulabo abathanda imvelo, amalensi ane-polarized ahlinzeka ngendlela yokujabulela kangcono izinto zokuzilibazisa zangaphandle, njengokuthiukudobakanye nemidlalo yasemanzini, ngokwandisa ukubonakala.
Amalensi aqhubekayo:Njenge-bifocals kanye ne-trifocals,amalensi aqhubekayobanamandla amaningi amalensi kubantu abanenkinga yokubona ngokucacile emabangeni ahlukene. Kodwa-ke, ama-progressive anikeza ukubukeka okuhlanzekile nokungenamthungo ngokuthuthuka kancane kancane emandleni kulelo nalelo lensi — sawubona, imigqa!
Amalensi e-Photochromic: Amalensi e-Photochromic, okubizwa nangokuthi amalensi okushintsha, amnyama elangeni futhi ahlale ecacile ngaphakathi. Amalensi e-photochromic asungulwa ngawo-1960, kodwa athandwa kakhulu ekuqaleni kwawo-2000.
Amalensi okuvimba ukukhanya okuluhlaza okwesibhakabhaka:Selokhu amakhompyutha aba amadivayisi asekhaya adumile ngawo-1980 (ingasaphathwa eye-TV ngaphambi kwalokho kanye nama-smartphone ngemva kwalokho), ukusebenzisana kwesikrini sedijithali sekuvame kakhulu. Ngokuvikela amehlo akho ekukhanyeni okuluhlaza okwesibhakabhaka okuyingozi okuvela ezikrinini,izibuko zokukhanya eziluhlaza okwesibhakabhakakungasiza ekuvimbeleni ukukhathala kwamehlo kwedijithali kanye nokuphazamiseka emjikelezweni wakho wokulala.
Uma unesithakazelo sokwazi izinhlobo eziningi zamalensi, sicela ubheke amakhasi ethu laphahttps://www.universeoptical.com/stock-lens/.