Kev tsis nkag siab 1:
Txhua lub looj tsom iav dub yog 100% UV resistant
Cia peb nkag siab txog lub teeb ultraviolet. Lub wavelength ntawm ultraviolet lub teeb yog qis dua 400 uv. Tom qab qhov muag pom, nws yuav ua rau lub pob txha thiab retina puas, ua rau lub hnub ci keratitis thiab pob txha endothelial puas tsuaj.High-zoo looj tsom iav dub yuav tsum muaj peev xwm nqus los yog muaj kev cuam tshuam ultraviolet rays kom tsis txhob raug lub qhov muag.
Cov looj tsom iav dub uas muaj kev tiv thaiv ultraviolet feem ntau muaj ntau txoj hauv kev:
1. Mark "UV400":
Nws txhais tau hais tias qhov kev sib cais wavelength ntawm lub lens rau ultraviolet rays yog 400nm, uas yog, qhov siab tshaj plaws tus nqi ntawm nws spectral transmittance ntawm ib tug wavelength hauv qab no 400nm yuav tsis muaj ntau tshaj 2%.
2. Mark "UV", "UV tiv thaiv":
Qhia tau tias qhov thaiv qhov ntev ntawm lub lens tiv thaiv ultraviolet rays yog 380nm.
3. Mark "100% UV nqus":
Nws txhais tau hais tias lub lens muaj 100% nqus ntawm ultraviolet rays, uas yog hais tias, qhov nruab nrab transmittance nyob rau hauv lub ultraviolet ntau yam yog tsis ntau tshaj 0.5%. kev tiv thaiv muaj nuj nqi tiv thaiv ultraviolet rays hauv qhov tseeb.
Kev tsis nkag siab 2:
Cov looj tsom iav dub polarized zoo dua li cov looj tsom iav dub
Cov looj tsom iav dub polarized, ntxiv rau qhov ua haujlwm ntawm cov looj tsom iav dub, tuaj yeem ua rau tsis muaj zog thiab thaiv kev ntxhov.
reflected lub teeb, glare, irregular reflections ntawm cov khoom, thiab lwm yam., thiab kis tau tus mob axis ntawm txoj kev khiav mus rau lub
qhov muag kom pom thiab ua kom pom kev nplua nuj Levels, lub zeem muag pom tseeb dua thiab ntuj. Polarizers feem ntau yog
haum rau kev ua si sab nraum zoov xws li tsav tsheb, nuv ntses, caij nkoj, dej dawb rafting, thiab caij ski.As cov xim ntawm
polarizer lo ntsiab muag feem ntau yog tsaus dua, nws tsis tas yuav tsum hnav lawv nyob rau hauv huab hnub lossis sab hauv tsev. Koj yuav tsum xaiv
Qee cov looj tsom iav dub zoo tib yam los tiv thaiv koj lub qhov muag los ntawm ultraviolet rays.
Post lub sij hawm: Oct-22-2021