Tam sim no tsom iav tau pib ua haujlwm tsis yog tsuas yog kev tiv thaiv lossis kho, tab sis kuj tseem ua cov khoom siv zam uas tuaj yeem hloov pauv tus neeg lub ntsej muag thiab ua kom zoo nkauj zoo nkauj. Muaj ntau ntau hom kev ua haujlwm ntawm cov lo ntsiab muag, thiab ntau yam ntawm cov thav ntawv. Tab sis ua ntej koj yuav cov qauv uas koj nyiam, koj yuav tsum kawm seb yuav txiav txim siab qhov loj ntawm cov iav kom hnav tau yooj yim thiab xis nyob.
Qhov haum ntawm lub npe khoom siv yog qhov tseem ceeb heev, vim tias nws yuav tu siab heev thaum yuav khoom kim, tom qab ob peb feeb ntawm hnav, yuav nyem qee qhov ntawm lub ntsej muag lossis, tawm tsam, poob thaum khoov.
Yog tias tus ncej muaj qhov ntev uas tsis sib haum rau koj qhov kev ntsuas anthropometric, ces koj yuav tsum tsis txhob yuav tus qauv koj nyiam heev.
Main geometric dimensions of tsom iav
Yuav kom tsis txhob ua yuam kev hauv kev xaiv cov thav duab zoo, koj yuav tsum paub yuav ua li cas txiav txim siab qhov loj ntawm cov iav. Txhawm rau pab koj xaiv ib lub thav duab, muaj ob peb qhov tsis sib xws uas tso cai rau koj kom tsis muaj zogxaiv tus qauv tsim nyog. Tsuas muaj plaub leeg xwb:
- Lens width.
- Lens qhov siab.
- Dav ntawm tus choj nruab nrab ntawm lub lens ncej.
- Temple length.
Thaum xaiv cov tsom iav nrog cov lo ntsiab muag loj, ib qho ntawm qhov tsis sib xws ntawm tus ncej yog qhov tseem ceeb - qhov no yog qhov siab ntawm lub teeb qhib. Thaum xaiv vertically nqaim thav ntawv, qhov siab ntawm lub lo ntsiab muag yuav tsum phim qhov kev txhim kho lub lens tsim ntawm lub tsom iav.
Nws yog qhov zoo tshaj los sab laj tus kws kho qhov muag lossis tus kws kho qhov muag uas yuav pab xyuas qhov tseeb ntawm kev xaiv. Txog rau qhov kawg no, lawv tshawb xyuas qhov ua raws li qhov tsawg kawg nkaus qhov siab, uas tau qhia rau cov qauv xaiv ntawm cov tsom iav lo ntsiab muag, nrog rau qhov ntev ntawm cov duab xaiv rau cov iav no.
Qhov loj ntawm cov iav ntawm lawv cov thav duab
Qhov tsis tseem ceeb uas pab thaum xaiv cov iav yog qhia hauv millimeters, lawv tuaj yeem pom nyob rau sab hauv ntawm lub pob ntseg tom qab. Cov lej no yuav pab koj teb cov lus nug - yuav ua li cas txiav txim siab qhov loj ntawm iav. Ray Ban, Oakley, Persol thiab lwm cov tuam txhab lag luam ntawm cov qauv tsim ntawm cov khoom siv no qhia txog qhov tseem ceeb ntawm lawv cov khoom. Piv txwv li, koj pom cov lej 60 - 14 145 nyob rau sab hauv ntawm lub tuam tsev, lawv sib haum rau cov ntsuas hauv qab no: qhov dav ntawm qhov qhib, ua raws li tus dash lossis lub cim square qhia qhov dav ntawm tus choj, thiab tom qab ntawd, dhau ntawm ib qhov chaw, tus lej uas qhia qhov ntev ntawm lub tuam tsev.
Spectacle lens dav tsis tshua muaj qhia.
Thiab rau qee yamtsom iav ntawm cov nqi pheej yig, koj tuaj yeem nrhiav tau ib tus lej xwb - nws sib haum rau qhov ntev ntawm lub tuam tsev.
Cov tsom iav tsom iav feem ntau loj dua li cov iav tsom iav.
Kev txiav txim siab dav ntawm lub ntsej muag
Kev paub tseeb ntawm qhov dav ntawm lub ntsej muag yuav pab daws cov lus nug - yuav ua li cas txiav txim siab qhov loj ntawm cov iav. Hauv tsev, ntsuas qhov dav ntawm lub ntsej muag yog qhov nyuaj me ntsis, tab sis ua tau.
Ua li no, koj yuav xav tau ob lub xaum lossis cwj mem, uas yuav tsum tau muab tso rau hauv qab pob ntseg, thiab ntsuas qhov nrug ntawm lawv nrog tus pas ntsuas.
Cia peb ua qauv qhia lwm txoj hauv kev los txiav txim siab qhov loj ntawm lub tsom iav, tsom rau qhov loj ntawm lub lens. Koj yuav tsum tau rho tawm qhov loj ntawm tus choj saum tus choj ntawm koj lub qhov ntswg los ntawm qhov dav ntawm koj lub ntsej muag, ces rho tawm lwm kaum centimeters. Tus lej tshwm sim yuav tsum muab faib los ntawm ob. Qhov tshwm sim yog qhov pom qhov loj me uas haum rau koj lub ntsej muag.
Yuav ua li cas thiaj txiav txim siab qhov loj ntawm tus menyuam lub tsom iav?
Cov menyuam yaus zaum zaum los ntsuas lub ntsej muag. Tsis tas li ntawd, cov ntsuas no tau hloov tas li, tshwj xeeb tshaj yog hais txog qhov loj ntawm tus choj ntawm lub qhov ntswg. Tus choj ntawm cov menyuam yaus lub tsom iav yog qhov tseem ceeb heev, vim nws yog qhov tseeb vim qhov kev hloov pauv tas li ntawm nws qhov dav uas yuav tsum tau hloov cov tsom iav tom qab qee lub sijhawm.
Txog thaum muaj rau xyoo, qhov loj ntawm tus choj ntawm tus me nyuam lub qhov ntswg hloov me ntsis, thiab ntawm xya mus rau cuaj xyoo, qhov ntswg loj hlob mus rau qhov kawg.
Kev ntsuas qhov tseem ceeb uas yuav xav tau los yuav iav, nws yog qhov zoo dua los siv cov kws tshaj lij lossis ua koj tus kheej thaum tus menyuam tsaug zog.
Rules for sizing glass
Yuav kom paub seb yuav txiav txim siab npaum li cas ntawm cov tsom iav kom raug, koj yuav tsum ua raws li ob peb cov lus pom zoo thaum ua qhov ntsuas qhov yooj yim:
- Tag nrho qhov dav ntawm ib lub thav duab yog txhais raws li qhov sib npaug ntawm tus choj thiab qhov dav ntawm ob lub lo ntsiab muag, ntxiv rau qhov dav ntawm lub hinges uas ruaj cov tuam tsev rau tus ncej. Tus lej tshwm sim feem ntau yog nyob nruab nrab ntawm plaub thiab kaum millimeters.
- Qhov dav dav ntawm lub ntsej muag yuav tsum sib haum rau qhov dav ntawm lub ntsej muag uas lub tsom iav haum thiab yuav tsum tsis txhob sib txawv ntawm daim duab kawg los ntawm ntau tshaj ob mus rau peb millimeters.
tsom iav yuav khoom
Nws yog qhov zoo tshaj los yuav cov khoom siv tau piav qhia hauv cov khw tshwj xeeb lossis cov kws kho qhov muag. Tsis tas li ntawd, cov kws tshaj lij pom zoo kom xaiv cov npe paub zoo lossis tsawg kawg paub cov npe thiab cov npe ntawm cov tsom iav. Thiab rau qhov no, koj yuav tsum nrhiav kev pab los ntawm tus kws kho qhov muag-tus kws pab tswv yim, uas ib txwm nyob hauv txhua lub khw muag khoom muag tsom iav.
Thaum yuav iav ntawm koj tus kheej, ua raws li qhov ntau thiab tsawg ntawm cov khoom dhau los, yav tas los yuav.
