Zasungulwa nini ngempela izibuko zamehlo?
Nakuba imithombo eminingi ithi izibuko zamehlo zasungulwa ngo-1317, umqondo wezibuko kungenzeka waqala kusukela ngo-1000 BC Eminye imithombo ithi uBenjamin Franklin wasungula izibuko, futhi ngenkathi enza izibuko ze-bifocal, lo msunguli odumile akanakuhlonishwa ngokwakha izibuko. jikelele.
Emhlabeni lapho abantu abangu-60% bedinga uhlobo oluthile lwamalensi okulungisa ukuze babone kahle, kunzima ukubona isithombe sesikhathi lapho izibuko zamehlo zazingekho khona.
Yiziphi izinto ezasetshenziswa ekuqaleni ukwenza izibuko?
Amamodeli engqondo ezibuko zamehlo abukeka ehluke kancane kunezibuko zikadokotela esizibona namuhla - ngisho namamodeli okuqala ayehluka ngokwesiko kuye kwelinye.
Abaqambi abehlukene babenemibono yabo yokuthi bangathuthukisa kanjani ukubona besebenzisa izinto ezithile.Ngokwesibonelo, amaRoma asendulo ayekwazi ukwenza ingilazi futhi ayesebenzisa leyo nto ukuze enze eyawo izibuko.
Abaqambi base-Italy basheshe bafunda ukuthi ikristalu yedwala ingenziwa ibe yi-convex noma ibe yi-concave ukuze inikeze izinsiza ezibukwayo ezihlukahlukene kulabo abanokukhubazeka okuhlukile kokubona.
Namuhla, amalensi engilazi yamehlo ngokuvamile ayipulasitiki noma ingilazi futhi amafreyimu angenziwa ngensimbi, ipulasitiki, ukhuni ngisho nesisekelo sekhofi (cha, i-Starbucks ayizithengisi izingilazi - hhayi okwamanje).
Ukuvela kwezibuko zamehlo
Izibuko zamehlo zokuqala beziyisixazululo esilingana nosayizi owodwa, kodwa akunjalo namuhla.
Ngoba abantu banezinhlobo ezahlukene zokukhubazeka kokubona -i-myopia(ukubona eduze),i-hyperopia(ukubona kude),i-astigmatism,i-amblyopia(ihlo elivilaphayo) nokunye - amalensi engilazi yamehlo ahlukene manje alungisa lawa maphutha aphikisayo.
Okulandelayo ezinye zezindlela izibuko ezithuthuke ngayo futhi zathuthuka ngokuhamba kwesikhathi:
I-Bifocals:Ngenkathi ama-convex lens asiza labo abane-myopia kanyeama-lens e-concavei-hyperopia kanye ne-presbyopia elungile, asikho isisombululo esisodwa sokusiza labo abahlushwa yizo zombili izinhlobo zokukhubazeka kwamehlo kuze kube ngu-1784. Siyabonga, Benjamin Franklin!
I-Trifocals:Ingxenye yekhulu leminyaka ngemva kokusungulwa kwama-bifocal, ama-trifocal aqala ukubonakala.Ngo-1827, uJohn Isaac Hawkins wasungula amalensi asebenzela labo abanobunzimai-presbyopia, isimo sokubona esivame ukufika ngemva kweminyaka engu-40. I-Presbyopia ithinta ikhono lomuntu lokubona eduze (amamenyu, amakhadi eresiphi, imilayezo yombhalo).
Amalensi anemibala:U-Edwin H. Land udale amalensi ane-polarized ngo-1936. Wasebenzisa isihlungi se-polaroid lapho enza izibuko zakhe zelanga.I-polarization inikezela ngamakhono e-anti-glare kanye nokunethezeka kokubuka okuthuthukisiwe.Kulabo abathanda imvelo, amalensi agqamile ahlinzeka ngendlela yokujabulela kangcono izinto zokuzilibazisa zangaphandle, njengokuthiukudobakanye nemidlalo yasemanzini, ngokwandisa ukubonakala.
Amalensi aqhubekayo:Njengama-bifocals nama-trifocals,amalensi aqhubekayobabe namandla amalensi amaningi kubantu abanenkinga yokubona ngokucacile emabangeni ahlukene.Kodwa-ke, izithuthukisi zinikeza ukubukeka okuhlanzekile, okungenamthungo ngokuthuthuka kancane kancane emandleni kuwo wonke amalensi - sala kahle, imigqa!
Amalensi e-Photochromic: Amalensi e-Photochromic, aphinde abizwe ngokuthi amalensi ezinguquko, abe mnyama ekukhanyeni kwelanga futhi ahlale kucace endlini.Amalensi e-Photochromic asungulwa ngeminyaka yawo-1960, kodwa aduma ekuqaleni kwawo-2000.
Amalensi okuvimbela ukukhanya okuluhlaza:Njengoba amakhompyutha aba yimishini yasendlini edumile ngeminyaka yawo-1980 (ingasaphathwa eye-TV ngaphambi kwalokho nama-smartphones ngemva kwalokho), ukusebenzisana kwesikrini sedijithali sekuvame kakhulu.Ngokuvikela amehlo akho ekukhanyeni okuluhlaza okuyingozi okuvela ezikrinini,izibuko ezikhanyayo eziluhlaza okwesibhakabhakaingasiza ekuvimbeleni ukucindezeleka kwamehlo edijithali kanye nokuphazamiseka emjikelezweni wakho wokulala.
Uma unentshisekelo yokwazi izinhlobo eziningi zamalensi, sicela ubheke amakhasi ethu laphahttps://www.universeoptical.com/stock-lens/.