Iiglasi zamehlo zaqanjwa nini ngokwenene?
Nangona imithombo emininzi ithi iiglasi zaqalwa ngo-1317, ingcamango yeeglasi isenokuba yaqala kwange-1000 BC Ezinye imithombo zithi uBenjamin Franklin waqamba iiglasi, kwaye nangona waqamba ii-bifocals, lo mvelisi udumileyo akanakubizwa ngokuba ngumqambi weeglasi ngokubanzi.
Kwihlabathi apho ama-60% abantu befuna uhlobo oluthile lweelensi zokulungisa ukuze babone ngokucacileyo, kunzima ukucinga ngexesha apho iiglasi zamehlo zazingekho.
Ziziphi izinto ezazisetyenziswa ekuqaleni ukwenza iiglasi?
Iimodeli zeglasi zamehlo ezicacileyo zibonakala zahlukile kancinci kuneeglasi ezibhalwe ngugqirha esizibonayo namhlanje — kwaneemodeli zokuqala zahluka ngokwenkcubeko.
Abayili abahlukeneyo babeneengcinga zabo zokuphucula umbono besebenzisa izixhobo ezithile. Umzekelo, amaRoma amandulo ayesazi indlela yokwenza iglasi kwaye asebenzisa ezo zinto ukwenza uhlobo lwawo lweeglasi zamehlo.
Abayili bezinto base-Itali bakhawuleza bafunda ukuba ikristale yelitye inokwenziwa ibe yi-convex okanye ibe yi-concave ukuze inike izixhobo ezahlukeneyo zokunceda abo baneengxaki ezahlukeneyo zokubona.
Namhlanje, iilensi zeglasi zamehlo zihlala ziyiplastiki okanye iglasi kwaye iifreyimu zinokwenziwa ngesinyithi, iplastiki, umthi kwanekofu (hayi, iStarbucks ayizithengisi iiglasi — okwangoku).
Uphuhliso lweeglasi zamehlo
Iiglasi zokuqala zamehlo zazizisisombululo esinye esifanela wonke umntu, kodwa ngokuqinisekileyo akunjalo namhlanje.
Ngenxa yokuba abantu baneentlobo ezahlukeneyo zokukhubazeka kokubona —i-myopia(ukubona kufutshane),i-hyperopia(ukubona kude),i-astigmatism,i-amblyopia(iliso elivila) nokunye — iilensi ezahlukeneyo zeglasi ngoku zilungisa ezi mpazamo zokuchasana nokukhanya.
Ezi zilandelayo zezinye zeendlela iiglasi eziye zaphuhliswa zaza zaphucuka ngazo ngokuhamba kwexesha:
IiBifocals:Ngelixa iilensi ezijijekileyo zinceda abo bane-myopia kunyeiilensi ezigobileyoi-hyperopia echanekileyo kunye ne-presbyopia, bekungekho sisombululo sinye sokunceda abo babeneengxaki zombini zokubona de kwaba ngu-1784. Enkosi, Benjamin Franklin!
IiTrifocals:Kwiminyaka engamashumi amahlanu emva kokuyilwa kwee-bifocals, kwavela ii-trifocals. Ngo-1827, uJohn Isaac Hawkins wasungula iilensi ezazinceda abo baneengxaki ezinkulu.i-presbyopia, imeko yokubona edla ngokufika emva kweminyaka engama-40. I-Presbyopia ichaphazela indlela umntu azibona ngayo izinto kufutshane (iimenyu, amakhadi eresiphi, imiyalezo).
Iilensi ezivuthulukileyo:U-Edwin H. Land wenza iilensi ezi-polarized ngo-1936. Wasebenzisa isihluzi se-polaroid xa wayesenza iiglasi zakhe zelanga. I-Polarization inika amandla okulwa nokukhanya kunye nentuthuzelo yokujonga ephucukileyo. Kwabo bathanda indalo, iilensi ezi-polarized zibonelela ngendlela yokonwabela ngcono izinto abazithandayo ngaphandle, ezifanaukulobakunye nemidlalo yamanzi, ngokwandisa ukubonakala.
Iilensi eziqhubekekayo:Njengee-bifocals kunye nee-trifocals,iilensi eziqhubekekayozinamandla eelensi amaninzi kubantu abanengxaki yokubona ngokucacileyo kumgama owahlukileyo. Nangona kunjalo, ii-progressives zibonelela ngenkangeleko ecocekileyo nengenamthungo ngokuqhubeka kancinci kancinci kumandla kwilensi nganye - sala kakuhle, imigca!
Iilensi ze-Photochromic: Iilensi ze-Photochromic, ezikwabizwa ngokuba ziilensi zotshintsho, zenza mnyama elangeni kwaye zihlala zicacile ngaphakathi. Iilensi ze-photochromic zaqanjwa ngeminyaka yoo-1960, kodwa zaduma ekuqaleni kweminyaka yoo-2000.
Iilensi ezithintela ukukhanya okuluhlaza okwesibhakabhaka:Ukususela oko iikhompyutha zaba zizixhobo ezidumileyo zasekhaya ngeminyaka yoo-1980 (singasathethi ke ngeeTV ngaphambi koko kunye neefowuni eziphathwayo emva koko), ukusebenzisana kwesikrini sedijithali kuye kwanda kakhulu. Ngokukhusela amehlo akho ekukhanyeni okuluhlaza okwesibhakabhaka okuyingozi okuvela kwizikrini,iiglasi zokukhanya eziluhlaza okwesibhakabhakainokunceda ukuthintela ukuxinezeleka kwamehlo kunye nokuphazamiseka kumjikelo wakho wokulala.
Ukuba unomdla wokwazi ezinye iintlobo zeelensi, nceda ujonge amaphepha ethu aphahttps://www.universeoptical.com/stock-lens/.