looj tsom iav dubNrog UV tiv thaiv yog vim qhov sib ntxiv ntawm cov txheej tshwj xeeb ntawm cov lo ntsiab muag, thiab cov looj tsom iav dub tsis zoo xwb tsis tuaj yeem thaiv UV rays, tab sis kuj tseem txo cov kev xa tawm ntawm lub lo ntsiab muag, ua rau cov menyuam kawm ntawv loj dua, thiab ultraviolet rays yuav raug txhaj rau ntau qhov ntau. , ua rau lub qhov muag puas..Yog li hnub no,IVisionkho qhov muag yuav coj koj nkag siab: yuav ua li cas thiaj paub tias looj tsom iav dub tiv thaiv UV-resistant?
Txoj Kev 1. Saib daim ntawv lo ntawm cov looj tsom iav dub.
Pom pom cov cim xws li "UV tiv thaiv", "UV400", thiab lwm yam yog pom ntawm cov ntawv lo lossis lo ntsiab muag ntawm UV-resistantlooj tsom iav dub."UV index" yog cov txiaj ntsig ntawm kev lim tawm cov kab hluav taws xob ultraviolet, uas yog qhov tseem ceeb rau kev yuav cov looj tsom iav dub.Lub teeb nrog lub wavelength ntawm 286nm-400nm yog hu ua ultraviolet lub teeb.Feem ntau, 100% UV Performance index yog tsis yooj yim sua.UV Performance index ntawm cov looj tsom iav feem ntau yog nyob nruab nrab ntawm 96% thiab 98%.
Cov looj tsom iav dub nrog kev ua haujlwm tiv thaiv ultraviolet feem ntau muaj cov hauv qab no qhia:
a) Mark "UV400": qhov no txhais tau hais tias qhov kev txiav tawm ntawm lub lens rau lub teeb ultraviolet yog 400nm, uas yog, qhov siab tshaj plaws tus nqi τmax (λ) ntawm spectral transmittance ntawm lub wavelength (λ) qis dua 400nm tsis ntau tshaj. 2% yog ';
b) Mark "UV" thiab "UV tiv thaiv": qhov no txhais tau hais tias qhov kev txiav tawm wavelength ntawm lub lens rau ultraviolet yog 380nm, uas yog, tus nqi siab tshaj τmax (λ) ntawm spectral transmittance ntawm lub wavelength (λ) hauv qab 380nm tsis ntau tshaj 2%;
c) Mark "100% UV nqus": Qhov no txhais tau hais tias lub lens muaj kev ua haujlwm ntawm 100% nqus ntawm ultraviolet rays, uas yog, nws qhov nruab nrab transmittance nyob rau hauv ultraviolet ntau yam tsis ntau tshaj 0.5%.
Cov looj tsom iav dub uas ua tau raws li cov kev cai saum toj no yog cov looj tsom iav dub uas tiv thaiv cov kab hluav taws xob ultraviolet hauv qhov tseeb.
Txoj Kev 2. Siv tus cwj mem banknote los kuaj xyuas
Thaum tsis muaj cov twj paj nruag, cov neeg zoo tib yam kuj tuaj yeem tshawb xyuas seb lub looj tsom iav dub puas muaj kev tiv thaiv UV.Nqa ib daim ntawv nyiaj, muab lub looj tsom iav dub tso rau ntawm cov ntawv pov thawj pov thawj, thiab thaij duab ntawm lub lens nrog lub ntsuas nyiaj lossis lub ntsuas nyiaj.Yog tias koj tseem tuaj yeem pom cov cim dej, nws txhais tau tias cov looj tsom iav dub tsis tiv thaiv UV.Yog tias koj tsis pom nws, nws txhais tau tias Cov looj tsom iav dub yog tiv thaiv UV.
Txhawm rau suav cov saum toj no: Txoj Kev 2 yog kev txheeb xyuas qhov tseeblooj tsom iav dubdaim ntawv lo nyob rau hauv Txoj Kev 1. Nws tuaj yeem pom tau hais tias cov neeg lag luam daim ntawv lo yog qhov tseeb thiab seb lub looj tsom iav dub puas muaj kev ua haujlwm ntawm kev tiv thaiv ultraviolet.Thaum muas looj tsom iav dub, koj tuaj yeem sim lawv.Nyob rau hauv tus txheej txheem ntawm kev yuav khoom thiab hnav, yog tias koj muaj lus nug, thov mus saib cov ntaub ntawv tseem ceeb.
Post lub sij hawm: Lub Xya hli ntuj-22-2022