Zaziwe nini izinto zamehlo?
Nangona imithombo emininzi ichaza ukuba igqwirha yamehlo yaqalwa ngo-1317, umbono weeglasi unokuqalisa kwangoko njenge-1000 B. Ingaba lenze ukuba i-benjamin Franklin ifakwe kwiglasi ngokubanzi.
Kwilizwe apho i-60% yabemi ifuna uhlobo oluthile lweelensi zokulungisa ukubona ngokucacileyo, kunzima ukuthobela ixesha apho amagqwike ewamehlo ayengekho khona.
Zeziphi izinto ezazisetyenziswa ekuqaleni ukwenza iiglasi?
Iimodeli zengqondo zeglasi zamehlo zikhangeleka zahlukile kuneglasi yaseburhulumenteni esiyibona namhlanje - kwanemodeli yokuqala eyahlukileyo kwinkcubeko.
Abasebenzi abahlukeneyo babenezimvo zabo zendlela yokuphucula umbono usebenzisa izixhobo ezithile. Umzekelo, amaRoma amandulo ukwazile ukwenza iglasi kwaye asebenzise loo nto ukuze enze uhlobo lwazo lweeglasi zamehlo.
Abenoveleli base-Italiya bafumanisa ukuba i-crystal yelitye inokwenziwa i-Cryvex okanye i-Concave ukubonelela ngeenyawo ezibonakalayo ezibonakalayo.
Namhlanje, iilensi zamehlo zihlala zihlala zeplastiki okanye zeglasi kunye neefreyimu zinokwenziwa ngentsimbi, iplastiki, iinkuni kunye neenkuni zekofu (hayi, i-starbucks ayithengi).
Indaleko yezigqezo zamehlo
Iiglasi zamehlo zokuqala zazingaphezulu kwesisombululo-zinezisombululo zonke, kodwa ngokuqinisekileyo akunjalo namhlanje.
Kuba abantu baneentlobo ezahlukeneyo zokuphazamiseka okubonakalayo-i-myopia(Esona simahla),i-hyperopia(I-fair),i-atistmatism,ambia(iliso elivilaphayo) kunye neelensi zamehlo ezahlukileyo zamehlo ngoku zilungisa ezi mpazamo zintshabalalo.
Oku kulandelayo zezinye zeendlela eziye zaqulunqa iiglasi kwaye ziphuculwe ekuhambeni kwexesha:
Iibhayili:Ngelixa iilensi ze-consex zinceda abo bane-myopia kwayeI-Cocave LensesI-hypetropia echanekileyo kunye nePressopia, kwakungekho sisombululo sinye sokunceda abo babandezeleka kwazo zombini ezi ntlobo zombono de kube yi-1784. Enkosi Franklin!
I-Trifocals:Isiqingatha senkulungwane emva kokuyilwa kwee-biifocals, amaziko enzonzobila abona. Ngo-1827, uYohane uIsaac Hawkin wafaka iilensi ezikhonza kakhuluI-Presbyopia, imeko yombono edla ngokubetha emva kweminyaka engama-40.
I-lenser ehleliweyo:U-Edwin h I-polarization ibonelela ngobuchule be-anti-glare kunye nokuphuculwa kokuthuthuzela. Kwabo bathanda indalo, iilensi eziphalazelayo zibonelela ngendlela yokunandipha izinto zokuzonwabisa zangaphandle, njengeukulobakunye nemidlalo yamanzi, ngokwandisa ukubonakala.
Iilensi ezihambelanayo:Njengee-bifucals kunye neestifocals,Iilensi ezihambelanayoI-lens ezininzi ze-lens zabantu abanengxaki yokubona ngokucacileyo kumgama owahlukileyo. Nangona kunjalo, ukuqhubela phambili kubonelele ngokucocekileyo, ukujonga okungagungqiyo ngokuthe ngcembe ngokuthe ngcembe ukuya kwi-lensi nganye kwilensi nganye - kulungile, imigca!
I-Photochromic lenses: Iifoto zeFotochromic, ikwabhekiswa kuyo njengee-lenses ze-lenses, idayale elangeni kwaye ihlale icacile. I-lentoles yefoto yenziwa nge-1960s, kodwa zathandwa ekuqaleni kwe-2000s.
I-Bloble Shock Blocks:Kuba iikhompyuter zaba zizixhobo zasekhaya ezidumileyo ngeminyaka yoo-1980 (ukungasathethi-kukhankanya i-TVs ngaphambi kokuba loo kunye ne-smartphones emva), ukusebenzisana kwedijithali kuye kwabakho ngakumbi. Ngokukhusela amehlo akho kumbane onobungozi obukhulu ovela kwizikrini,Iiglasi ezibukhali ezibukhaliinokunceda ukukhusela iliso lamehlo yedijithali kunye nokuphazamiseka kumjikelo wakho wokulala.
Ukuba unemidla yokwazi ngakumbi iintlobo zeelensi, nceda ujonge kumaphepha ethu aphahttps: //www.W3.