Tam sim no, cov khoom siv lo ntsiab muag tuaj yeem muab faib ua cov khoom siv iav lo ntsiab muag, cov ntaub ntawv lo ntsiab muag, cov ntaub ntawv siv lead ua lens, cov ntaub ntawv PC lens, cov ntaub ntawv MR lens, thiab lwm yam.
1. Cov iav muaj qhov zoo tshaj plaws hnav tsis kam, tab sis nws tsis yooj yim, thiab cov iav lo ntsiab muag hnyav thiab tsis xis nyob rau hnav. Yog li ntawd, ob peb tus neeg siv tam sim no, thiab feem ntau xaiv lwm lo ntsiab muag los hloov.
2. Resin lens: Resin lens yog ib lub lens optical ua los ntawm resin. Nws yog lub teeb thiab hnav- tiv taus, thiab lub teeb xa tawm tuaj yeem ncav cuag 98% tom qab ntxiv cov yeeb yaj kiab. Nws muaj zog cuam tshuam tsis kam thiab ntau yam ntawm luminosity. Nws tuaj yeem ua tau raws li qhov muag xav tau. Nws muaj nuj nqis vim nws cov qauv tshuaj tshwj xeeb thiab qhov tseeb tias nws tuaj yeem siv los ua cov xim latex thiab kua nplaum.
3. Crystal lens: Qhov zoo tshaj plaws ntawm cov siv lead ua yog nws cov tawv tawv siab, thiab cov lo ntsiab muag ua los ntawm nws tsis yooj yim rau hnav. Crystal lo ntsiab muag tau nrov nyob rau xyoo 1920 thiab 1930s ntawm lub xyoo pua no. Cov lo ntsiab muag ua los ntawm nws yog qhov ruaj khov, tab sis tus nqi yog kim heev.
4. PC lens: PC lens tseem hu ua "qhov chaw lens" lossis "lub ntiaj teb lens". Nws lub npe tshuaj yog polycarbonate, uas yog cov khoom siv thermoplastic. PC lens muaj qhov zoo ntawm lub teeb yuag, muaj zog cuam tshuam, siab hardness, siab refractive index, zoo heev mechanical function, zoo thermoplasticity, zoo heev hluav taws xob rwb thaiv tsev muaj nuj nqi, thiab tsis muaj kuab paug rau ib puag ncig. Nws kuj yog lub lens tshwj xeeb tsav tsheb, tab sis nws yooj yim rau corrode.
5. MR lens: MR lens yog cov khoom siv siab refractive index lens nrog cov ntsuas kev ua tau zoo tshaj plaws, tshwj xeeb tshaj yog tsim rau kev tsim cov iav lo ntsiab muag. Lub lens yog nyias thiab lub teeb, nrog lub zeem muag pom tseeb, kev kub siab ua haujlwm, thiab tsis yooj yim rau kev puas tsuaj. Qhov tseem ceeb tshaj plaws yog tias piv nrog cov lo ntsiab muag zoo tib yam, nws tsis yooj yim rau tig daj, nws yog qhov tseeb thiab ci rau lub sijhawm ntev, thiab nws muaj kev tiv thaiv corrosion zoo heev.
