Spectacle lo ntsiab muag kho qhov teeb meem refractive los ntawm khoov (refracting) lub teeb thaum nws hla lub lens. Tus nqi ntawm lub teeb-bending peev xwm (lub hwj chim lens) uas xav tau los muab kev pom zoo yog qhia rau ntawm cov tshuaj spectacle muab los ntawm koj tus kws kho qhov muag.
Refractive yuam kev thiab lub lens hwj chim yuav tsum tau kho lawv yog ntsuas nyob rau hauv units hu ua dioptres (D). Yog tias koj pom qhov muag me me, koj daim ntawv lo ntsiab muag tej zaum yuav hais tias -2.00 D. Yog tias koj muaj myopic heev, nws yuav hais tias -8.00 D.
Yog tias koj pom qhov ntev, koj xav tau "ntxiv" (+) lo ntsiab muag, uas yog tuab hauv nruab nrab thiab nyias ntawm ntug.
Cov iav tsis tu ncua los yog yas lo ntsiab muag rau ntau qhov kev pom luv luv lossis pom ntev yuav ua tau tuab thiab hnyav.
Hmoov zoo, cov tuam ntxhab tau tsim ntau yam tshiab "high-index" cov ntaub ntawv yas lo ntsiab muag uas khoov lub teeb kom zoo dua.
Qhov no txhais tau hais tias cov khoom siv tsawg dua tuaj yeem siv rau hauv high-index lo ntsiab muag los kho tib yam ntawm qhov ua yuam kev refractive, uas ua rau high-index yas lo ntsiab muag ob qho tib si nyias thiab sib dua li cov iav lo ntsiab muag lossis yas lo ntsiab muag.
Qhov zoo ntawm high-index lo ntsiab muag
Nyias
Vim tias lawv muaj peev xwm khoov lub teeb kom tau txais txiaj ntsig zoo dua, qhov ntsuas qhov ntsuas siab rau qhov pom kev luv luv muaj cov npoo nyias dua li cov lo ntsiab muag nrog tib lub zog tshuaj uas yog ua los ntawm cov khoom siv yas.
Sib dua
Cov npoo nyias yuav tsum muaj cov khoom siv lens tsawg, uas txo qhov hnyav tag nrho ntawm cov lo ntsiab muag. Lens ua los ntawm high-index yas yog sib dua li tib lo ntsiab muag ua nyob rau hauv cov pa yas, yog li ntawd lawv nyob nraum nyiam hnav.
Thiab feem ntau high-index lo ntsiab muag kuj muaj ib tug aspheric tsim, uas muab lawv ib tug slimmer, zoo nkauj profile thiab txo lub magnified saib uas cov pa lo ntsiab muag ua rau muaj zog longsighted tshuaj.
High-index lens xaiv
High-index yas lo ntsiab muag tam sim no muaj nyob rau hauv ntau yam ntawm refractive indices, feem ntau ntawm 1.60 txog 1.74. Cov lo ntsiab muag nrog qhov ntsuas qhov ntsuas ntawm 1.60 & 1.67 tuaj yeem yog tsawg kawg 20 feem pua thinner dua li cov lo ntsiab muag yas, thiab 1.71 lossis siab dua feem ntau tuaj yeem nyob ib ncig ntawm 50 feem pua thiner.
Tsis tas li ntawd, feem ntau hais lus, qhov siab dua qhov ntsuas yog, qhov siab dua lub lo ntsiab muag nqi.
Koj daim ntawv tshuaj ntsuam xyuas kuj txiav txim siab seb yam khoom zoo li cas koj xav tau rau koj lub lens. Cov ntaub ntawv ntsuas siab tshaj plaws yog siv feem ntau rau cov tshuaj muaj zog tshaj plaws.
Feem ntau ntawm niaj hnub no cov qauv tsim thiab cov yam ntxwv nrov - suav nrog Dual Aspheric, Progressive, Bluecut Pro, Tshuaj pleev xim pleev xim, thiab qhov tshiab Spin-coating photochromic lo ntsiab muag - muaj nyob rau hauv cov ntaub ntawv siab. Zoo siab txais tos nias rau hauv peb nplooj ntawv ntawmhttps://www.universeoptical.com/armor-revolution-product/mus xyuas kom paub meej ntxiv.