Tau ntau xyoo, peb cov neeg muag khoom thiab cov khw muag khoom tau ntaus peb nrog cov lus nug tib yam li ntau zaus peb tau poob suav: "Dab tsi yog qhov heck yog VLT, thiab qhov twg kuv xav tau tiag tiag?" Yog li peb xav tias peb yuav muab tso ua ke cov lus hais tiag tiag - tsis yog phau ntawv kawm, tsuas yog qhov peb tau kawm ntawm lub Hoobkas hauv pem teb thiab daus. Yog tias koj tab tom pom ob lub looj tsom iav tsis zoo, tau txais VLT txoj cai yog qhov sib txawv ntawm hnub zoo thiab mob taub hau.
Yog li, VLT yog dab tsi?
Nws sawv cev rau Visible Light Transmission - qhov tseem ceeb, feem pua ntawm lub teeb uas ua rau nws hla lub lens thiab rau hauv koj lub qhov muag. Qhov ntawd yog nws.
Tus lej VLT qis (xav 5-15%) txhais tau tias yog lub lens tsaus uas thaiv lub teeb feem ntau. Cov no yog clutch rau mob siab kaj bluebird hnub thaum koj xav tau squinting.
High VLT (60-90%) yog yuav luag ib lub lens ntshiab, cia nyob rau hauv lub teeb ntau li ntau tau. Hmo ntuj caij ski, lub teeb cua daj cua dub, huab cua hnyav - yog qhov uas lawv ci.
Los ntawm lub kaum sab xis tsim, peb tau txais cov feem pua los ntawm tweaking lub hauv paus tint ntawm polycarbonate thiab tom qab ntawd muab tso rau ntawm daim iav coatings lossis flash tiav. Ib me ntsis zas xim ntawm no, lub teeb sib txawv nyob ntawd, thiab tam sim ntawd lub lens coj txawv.
Theem S0–S4
Optics nerds faib lo ntsiab muag ua tsib pawg, S0 txog S4. Nov yog daim ntawv cheat hauv cov lus dawb:
S0 (80–100% VLT): yuav luag ntshiab, rau hmo ntuj, sab hauv tsev, los yog kua zaub-thick pos huab. Xim piv txwv: ntshiab, daj ntseg daj.
S1 (43–80%): koj yuav lob cov no hauv huab hnyav, lub teeb tiaj tus, tsaus ntuj. Pink, daj, lub teeb xiav yog cov classic tints.
S2 (18–43%): lub jack-of-tag nrho-ua lag luam. Cov hnub sib txawv, ib nrab hnub ci, ib nrab "lub roob mus qhov twg?" Amber, Rose, tooj liab.
S3 (8-18%): lub hnub ci ntsa iab, qhov siab siab, koj lub hnub ci chaw so txhua hnub. Tsaus grey, tsaus xim av, thiab feem ntau mirrored xaiv.
S4 (3–8%): tsaus ntuj heev - skiing glacier, glare heev. Dub, daim iav tsaus nti. Ua siab ncaj, tshwj tsis yog tias koj nyob rau lub caij ntuj sov glacier ncig xyuas, koj tuaj yeem tsis quav ntsej S4.
Tint Xim tsis yog rau saib xwb
VLT ua haujlwm ci ntsa iab, tab sis xim xim ua haujlwm yuav luag ib yam tseem ceeb: qhov sib piv.
Daj, txiv kab ntxwv, thiab rose tints txiav tawm lub teeb xiav, uas suab me me tab sis ua rau muaj qhov sib txawv loj hauv lub teeb tiaj tus. Tam sim ntawd cov pob pom tsis pom thiab qhov chaw hloov pauv tshwm sim - nws yuav luag zoo li kev dag. Grey thiab dub tints tsis cuam tshuam nrog cov xim, yog li lawv xav tias ntuj thiab tsis qaug zog thaum lub hnub tab tom ua rau koj txhua hnub.
Dab tsi tshiab los ntawm peb sab ntawm lub Hoobkas
Frameless & Vim Li Cas Nws Tseem Ceeb
Peb tsis tau pib ua cov tsom iav tsis muaj lub ntsej muag vim lawv saib zoo (tab sis, tsis yog, lawv ua). Los ntawm ditching lub chunky yas thav duab, peb tuaj yeem siv ntau lub lens nto. Qhov ntawd ua rau koj pom qhov dav dua thiab txoj hauv kev xav ntau dua - tsawg dua ntawm qhov "lub raj xa dej" cuam tshuam thaum koj tab tom luam theej rau koj qhov thib ob. Thaum koj muab qhov ntawd nrog VLT txoj cai, koj yeej pom dab tsi nyob ib sab koj es tsis txhob twv.
Photochromic Lenses
Yog hais tias swapping lo ntsiab muag ntawm lub rooj zaum ua suab tsis zoo, photochromic tech yog koj cov lus teb. Lub lens hloov nws VLT tau txais los ntawm UV raug - pib ntawm S1 thaum huab dov, tsaus rau S3 thaum lub hnub xuas nrig. Nws tsis yog khawv koob, tsuas yog ntse chemistry, thiab nws tuaj yeem tshwm sim hauv vib nas this.
Tsuas yog peb yam uas kuv yuav txhawj txog thaum xaiv VLT
Ua ntej, koj ua ski feem ntau qhov twg? Pacific Northwest nrog qhov kawg grey? Koj yuav nyob hauv cov lo ntsiab muag VLT siab dua. Colorado Rockies thiab lawv 300 hnub tshav ntuj? Lower VLT yog koj tus tsav tsheb txhua hnub.
Thib ob, magnetic swap systems yog qhov hloov pauv kev ua si. Muaj peev xwm pop ib lub lens sib txawv hauv yam tsis muaj kev sib tw nrog tus ncej txhais tau tias koj tuaj yeem nqa lub lens cua daj cua dub thiab lub hnub ci lo ntsiab muag hauv koj lub hnab ris thiab tsis foom tsis zoo rau tag nrho cov txheej txheem.
Thaum kawg, kev tiv thaiv UV tsis tuaj yeem sib tham. Tsis muaj teeb meem dab tsi VLT koj xaiv - hais kom lav 100% UV400 tiv thaiv. Lub lens tsaus uas tsis muaj UV thaiv qhov tseeb yog qhov phem rau koj ob lub qhov muag ntau dua li tsis muaj lub lens tag nrho, vim tias koj cov tub ntxhais kawm qhib thiab cia cov hluav taws xob puas tsuaj ntau dua.
Ib Yam Kawg
VLT yog qhov tseem ceeb ntawm lub tshuab cua wiper ceev rau koj ob lub qhov muag. Ua kom haum rau huab cua thiab koj yuav tsis xav txog nws; ua yuam kev thiab koj yuav squinting lossis skiing dig muag. Raws li cov qauv tsim tsis muaj teeb meem txuas ntxiv mus, qhov pom tau ntau dua, uas txhais tau tias kev xaiv lub lens tseem ceeb dua - tsis muaj thav duab los nkaum tom qab yog tias koj mess nws. Xaiv VLT uas haum rau koj lub tsev roob, thiab koj 90% ntawm txoj kev mus rau lub sijhawm zoo ntawm daus. Pom koj tawm ntawd.
