Tsis zoo li cov tsom iav dub lossis cov iav photochromic uas tsuas yog txo qhov kaj xwb, cov iav UV400 lim tawm tag nrho cov teeb ci uas muaj qhov ntev txog li 400 nanometers. Qhov no suav nrog UVA, UVB thiab lub teeb xiav uas muaj zog heev (HEV).
Yuav kom suav tias yog cov tsom iav UV, cov iav yuav tsum thaiv 75% txog 90% ntawm lub teeb pom kev thiab yuav tsum muaj kev tiv thaiv UVA thiab UVB kom thaiv 99% ntawm lub teeb ultraviolet.
Qhov zoo tshaj plaws, koj xav tau cov tsom iav uas muaj kev tiv thaiv UV 400 vim tias lawv muab kev tiv thaiv yuav luag 100% ntawm cov duab UV.
Nco ntsoov tias tsis yog txhua lub tsom iav dub suav tias yog tsom iav tiv thaiv UV. Ib khub tsom iav dub yuav muaj cov iav tsaus, uas tej zaum yuav xav tias thaiv tau lub teeb ci, tab sis qhov ntawd tsis tau txhais hais tias cov tsom iav tiv thaiv UV txaus.
Yog tias cov tsom iav dub uas muaj cov iav tsaus tsis muaj kev tiv thaiv UV, cov xim tsaus ntawd yeej ua rau koj ob lub qhov muag phem dua li tsis hnav cov tsom iav tiv thaiv. Vim li cas? Vim tias cov xim tsaus ntawd tuaj yeem ua rau koj cov qhov muag nthuav dav, ua rau koj ob lub qhov muag raug lub teeb UV ntau dua.
Kuv yuav paub li cas yog tias kuv cov tsom iav muaj kev tiv thaiv UV?
Tu siab kawg li, nws tsis yooj yim qhia seb koj lub tsom iav dub lossis lub lens photochromic puas muaj lub lens tiv thaiv UV tsuas yog saib lawv xwb.
Koj kuj tsis tuaj yeem paub qhov txawv ntawm qhov kev tiv thaiv raws li xim ntawm lub lens, vim tias xim ntawm lub lens lossis qhov tsaus ntuj tsis muaj feem cuam tshuam nrog kev tiv thaiv UV.
Qhov zoo tshaj plaws yog coj koj cov tsom iav mus rau lub khw muag tsom iav lossis cov chaw kuaj xyuas kev ua haujlwm. Lawv tuaj yeem ua qhov kev sim yooj yim rau koj cov tsom iav kom paub txog qib kev tiv thaiv UV.
Los yog qhov kev xaiv yooj yim yog los ntawm kev tsom koj qhov kev tshawb nrhiav rau ntawm lub tuam txhab tsim khoom uas muaj npe nrov thiab tshaj lij xws li UNIVERSE OPTICAL, thiab xaiv cov tsom iav UV400 tiag tiag lossis cov iav UV400 photochromic los ntawm nplooj ntawv.https://www.universeoptical.com/1-56-aspherical-uv400-q-active-material-photochromic-lens-product/.