1. Umgaqo-siseko we-lens ukufumanisa ukuhanjiswa kwe-UV
Umlinganiselo wokudluliselwa kweelensi zelanga awunakucutshungulwa njengomlinganiselo olula we-spectral transmittance kwi-wavelength nganye, kodwa kufuneka ifunyanwe ngokudityaniswa kobunzima be-spectral transmittance ngokobunzima bamaza ahlukeneyo.Iliso lomntu yinkqubo elula yamehlo.Xa uvavanya umgangatho weeglasi, uvakalelo lweliso lomntu ekukhanyeni kwemitha yokukhanya kwamaza ahlukeneyo kufuneka kuqala kuqwalaselwe.Ngamafutshane, iliso lomntu linomdla ekukhanyeni okuluhlaza, ngoko ke ukuhanjiswa kwebhanti yokukhanya okuluhlaza kunempembelelo enkulu ekuhanjisweni kokukhanya kwe-lens, oko kukuthi, ubunzima bebhanti yokukhanya okuluhlaza bukhulu;ngokuchaseneyo, ngenxa yokuba iliso lomntu alikhathaleli ukukhanya okumfusa kunye nokukhanya okubomvu, ngoko ke Ukuhanjiswa kokukhanya okumfusa kunye nokukhanya okubomvu kunefuthe elincinci ekudluliseni ukukhanya kwe-lens, oko kukuthi, ubunzima bokukhanya okumfusa kunye nokukhanya okubomvu. ibhendi yokukhanya ebomvu nayo incinci.Indlela esebenzayo yokubona ukusebenza kwe-anti-ultraviolet yeelensi kukumisela ngokobungakanani kunye nokuhlalutya ukuhanjiswa kwe-UVA kunye ne-UVB spectra.
2. Izixhobo zokuvavanya kunye neendlela
Umhloli we-spectral transmittance tester unokusetyenziselwa ukulinganisa ukuhanjiswa kwe-spectral yezibuko zelanga kummandla we-ultraviolet ukumisela umgangatho wesampuli ye-ultraviolet transmittance.Xhuma i-spectral transmittance meter kwi-port ye-serial yekhompyutheni, qalisa inkqubo yokusebenza, yenza ulungelelwaniso lokusingqongileyo kwi-23 ° C ± 5 ° C (ngaphambi kokulinganisa, kufuneka kuqinisekiswe ukuba inxalenye yokulinganisa ayinalo lens okanye isihlungi), kwaye usethe uvavanyo. uluhlu lwamaza ukuya kwi-280～480 nm, jonga imitha ye-ultraviolet yelensi phantsi kwemeko yokukhulisa ijika lokuhambisa.Ekugqibeleni, beka iilensi ezivavanyiweyo kwiiplagi zeerubha zokuvavanya ukuvavanya ukuhanjiswa kokukhanya (qaphela: sula iilensi kunye neeplagi zerubha zokuvavanya zicoceke phambi kovavanyo).
3. Iingxaki kumlinganiselo
Ekufumaneni izibuko zelanga, ukubalwa kokudluliselwa kwebhanti ye-ultraviolet yamkela indlela elula yokulinganisa i-spectral transmittance, echazwa njenge-avareji yokudlulisa.Kwisampuli efanayo phantsi kovavanyo, ukuba iinkcazo ezimbini ze-QB2457 kunye ne-ISO8980-3 zisetyenziselwa ukulinganisa, iziphumo ze-ultraviolet waveband transmittance ezifunyenwe zihluke ngokupheleleyo.Xa kulinganiswa ngokwenkcazo ye-ISO8980-3, isiphumo esibaliweyo sokudluliselwa kwi-UV-B band yi-60.7%;kwaye ukuba kulinganiswe ngokwenkcazo ye-QB2457, isiphumo esibaliweyo sokudluliselwa kwi-UV-B band yi-47.1%.Iziphumo zohluke nge-13.6%.Ingabonwa ukuba umahluko kumgangatho wereferensi uya kukhokelela ngokuthe ngqo kumahluko kwiimfuno zobugcisa, kwaye ekugqibeleni uchaphazele ukuchaneka kunye nenjongo yeziphumo zokulinganisa.Xa ulinganisa ukuhanjiswa kweemveliso zamehlo, le ngxaki ayinakuhoywa.
Ukuhanjiswa kweemveliso zeglasi kunye nezixhobo ze-lens kuvavanywa kwaye kuhlalutywe, kwaye ixabiso elichanekileyo lifunyenwe ngokudityaniswa kobunzima be-spectral transmittance, kwaye iziphumo ze-pros and cons of the sunglasses products zifunyenwe.Okokuqala, kuxhomekeke ekubeni izinto ze-lens zinokuvala imisebe ye-ultraviolet, i-UVA kunye ne-UVB, kwaye inokudlulisa ukukhanya okubonakalayo ngakumbi ukufezekisa umsebenzi ochasene ne-glare.Iimvavanyo zibonise ukuba ukuhanjiswa kwe-resin lens yeyona nto ingcono, ilandelwa yi-glass lens, kunye ne-crystal lens zezona zibi kakhulu.Ukusebenza kokuhanjiswa kweelensi ze-CR-39 phakathi kweelensi zeresin kubhetele kakhulu kune-PMMA.
Ixesha lokuposa: Nov-10-2021