Yuav xaiv thiab hnav looj tsom iav li cas
Cov looj tsom iav dub tseem hu ua Sun Visors. Nyob rau hauv lub caij ntuj sov thiab Plateau cheeb tsam, tib neeg feem ntau hnav looj tsom iav dub kom tsis txhob muaj lub zog ntawm lub teeb muaj zog thiab thaiv kev puas tsuaj ntawm ultraviolet rays rau lawv lub qhov muag. Nrog Kev Txhim Kho Ntawm Kev Ua Neej Nyob, Cov Neeg Nyiam Lawv Qhov Muag Ntau thiab Ntau. Nyob rau hauv lub hnub, ultraviolet rays ua phem heev rau lub qhov muag. Tus nqi ntawm ultraviolet teeb ncav cuag lub ntiaj teb nto nyiaj txog li 7 feem pua. Lub cornea thiab Lens ntawm tib neeg lub qhov muag yog lub qhov muag cov ntaub so ntswg uas muaj kev cuam tshuam rau ultraviolet hluav taws xob. Cataract yog kab mob qhov muag ze ze rau ultraviolet rays. Solar Keratitis, Corneal Endothelial puas, Macular Discoloration, Retinitis thiab lwm yam kab mob ntawm qhov muag yog tag nrho cov cuam tshuam rau ultraviolet rays. Cov looj tsom iav uas tsim nyog muaj lub luag haujlwm ntawm thaiv cov kab hluav taws xob ultraviolet thiab infrared. Yog li ntawd, Nws tuaj yeem hais tias hnav looj tsom iav dub thaum lub caij ntuj sov yog ib qho txiaj ntsig zoo los tiv thaiv lub qhov muag ntawm Uv puas.
Cov looj tsom iav dub feem ntau muab faib ua xim xim thiab tsaus, uas muaj ntau yam xim. Txhawm rau txiav txim siab qhov zoo ntawm cov looj tsom iav dub, ntau yam kev qhia xws li Vertex Power Thiab Prismatic Degree, Transmissivity Characteristics, Surface Quality and Internal Defects, Assembly Accuracy and Shaping Requirements yuav tsum raug kuaj xyuas.
Ib khub Cov looj tsom iav dub zoo tuaj yeem ua lub luag haujlwm hauv kev ntxoov ntxoo thiab kho kom zoo nkauj. Tab sis Hauv Kev Ua Lag Luam, qhov xwm txheej tiag tiag tsis yog qhov zoo. Qee tus neeg muag khoom tsis nco qab lawv tus kheej nyiam thiab ua kom zoo dua qhov tseeb tias cov neeg siv khoom tsis paub ntau txog qhov zoo ntawm cov looj tsom iav dub. Lawv siv cov iav qhov muag tsis zoo thiab pheej yig lossis lwm yam khoom siv qis los ua cov iav. Cov ntaub ntawv no muaj qhov tsis sib xws thiab muaj cov impurities xws li kab txaij thiab npuas, uas tsis tuaj yeem thaiv cov kab hluav taws xob ultraviolet thiab tsis ua raws li qhov yuav tsum tau ua ntawm lub cev ntawm tib neeg lub qhov muag. Dab tsi ntxiv, Inferior Plastic Sheets Nrog Lub Teeb Pom Kev Zoo Tshaj Plaws Tab sis Siab Ultraviolet Light Transmittance yog siv los ua looj tsom iav dub, ua rau muaj kev phom sij rau cov neeg siv khoom.
Yuav xaiv thiab hnav looj tsom iav li cas? Cov kws tshaj lij ceeb toom rau cov neeg siv khoom tsis yog tsuas yog saib xyuas cov qauv ntawm cov looj tsom iav xwb, tab sis kuj rau lawv cov khoom zoo. Rau Cov Kws Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Tawm ntawm 315nm Thiab 380nm Yuav Tsis Tshaj 10 feem pua , Thiab Kev Hloov Pauv Ntawm Mwuv Nrog Wavelength Ntawm 280nm Thiab 315nm Yuav Tsum Zero. Hnav cov looj tsom iav zoo li no tuaj yeem tiv thaiv lub ntsej muag, Lens thiab Retina ntawm lub qhov muag los ntawm ultraviolet rays. Qee lub looj tsom iav dub tsis tsuas yog tsis tuaj yeem lim tawm lub teeb ultraviolet, tab sis yuav ua rau cov hluav taws xob ultraviolet tseem ceeb dua vim tias lawv thaiv lub teeb pom kev. Nws yog qhov zoo dua tsis hnav cov looj tsom iav zoo li no.
looj tsom iav dub Belong To The Flat Lens Series. Raws li National Standard, looj tsom iav dub tsuas yog tso cai kom muaj Diopter Ntxiv lossis rho tawm 8 Degrees, thiab cov uas dhau qhov yuam kev no yog cov khoom tsis tsim nyog. Raws li Kev Tshawb Nrhiav Cov looj tsom iav dub ntawm Kev Ua Lag Luam Los ntawm cov kws tshawb fawb, ze li 30 feem pua ntawm cov looj tsom iav dub muaj Diopter dhau qhov kev zam, thiab qee qhov tseem ncav cuag ntau dua 20 Degrees. Cov kws tshaj lij tau taw qhia tias cov neeg tau txais kev pom zoo li qub uas hnav looj tsom iav dub zoo li hnav ib khub ntawm myopia lossis hyperopia. Tom qab lub caij ntuj sov, cov neeg siv khoom yuav raug "kev cob qhia" rau hauv cov neeg mob myopia lossis hyperopia nrog cov looj tsom iav tsis zoo. Thaum koj muaj kiv taub hau, xeev siab, qhov muag tshee thiab lwm yam tsos mob tom qab hnav looj tsom iav dub, koj yuav tsum tsis txhob hnav lawv tam sim ntawd.
