Ngokungafaniyo neeglasi zelanga eziqhelekileyo okanye iilensi zephotochromic ezinciphisa nje ukukhanya, iilensi ze-UV400 zihluza yonke imitha yokukhanya enobude ukuya kuthi ga kwi-nanometers engama-400. Oku kubandakanya i-UVA, UVB kunye ne-high-energy ebonakalayo (HEV) ukukhanya okuluhlaza okwesibhakabhaka.
Ukuze zithathwe njengeeglasi ze-UV, iilensi kufuneka zithintele i-75% ukuya kwi-90% yokukhanya okubonakalayo kwaye kufuneka zinikeze ukhuseleko lwe-UVA kunye ne-UVB ukuvala i-99% yemitha ye-ultraviolet.
Ngokufanelekileyo, ufuna iiglasi zelanga ezibonelela ngokhuseleko lwe-UV 400 kuba zibonelela ngokhuseleko lwe-100% kwimitha ye-UV.
Qaphela ukuba ayizizo zonke iiglasi zelanga ezithathwa njengezibuko ze-UV zokukhusela. Iperi yezibuko zelanga zinokuba neelensi ezimnyama, ezinokuthi zithintele imitha, kodwa oko akuthethi ukuba izithunzi zibonelela ngokhuseleko olwaneleyo lwe-UV.
Ukuba ezo zibuko zelanga ezineelensi ezimnyama azibandakanyi ukhuseleko lwe-UV, ezo thunzi zimnyama zimbi kakhulu emehlweni akho kunokuba unganxibanga naliphi na iliso elikhuselayo kwaphela. Ngoba? Kuba i-tint emnyama inokubangela ukuba abafundi bakho banwebe, baveze amehlo akho kukukhanya okungaphezulu kwe-UV.
Ndingazi njani ukuba iiglasi zam zinokhuselo lwe-UV?
Ngelishwa, akukho lula ukuxelela ukuba iiglasi zakho zelanga okanye iilensi zefotochromic zineelensi zokhuselo lwe-UV ngokuzijonga nje.
Kwaye awukwazi ukwahlula ubungakanani bokhuseleko olusekwe kumbala welensi, njengoko iilensi tints okanye ubumnyama ayinanto yakwenza nokhuseleko lwe-UV.
Ukubheja kwakho okuhle kukuthatha iiglasi zakho uzise kwivenkile yamehlo okanye kumaziko ovavanyo lobuNgcali. Banokuqhuba uvavanyo olulula kwiiglasi zakho ukujonga inqanaba lokhuseleko lwe-UV.
Okanye ukhetho olulula kukugxila kukhangelo lwakho kumenzi othembekileyo, kunye nomenzi oqeqeshiweyo onje nge-UNIVERSE OPTICAL, kwaye ukhethe iiglasi zelanga ze-UV400 zokwenyani okanye iilensi zefotochromic ze-UV400 kwiphepha.https://www.universeoptical.com/1-56-aspherical-uv400-q-active-material-photochromic-lens-product/.