Dawb 1.499 Index Flat Top Bifocal Lenses Tsis Muaj Txheej CR39 Khoom
Lus piav qhia luv luv:
Qhov chaw ntawm Keeb Kwm: Jiangsu, Suav
Qauv nab npawb: 1.499
Lenses Xim: Ntshiab, Ntshiab
Lub zeem muag nyhuv: Flat Top
Txoj Kev: D28
Hom Lub Npe: Kingway
Daim ntawv pov thawj: CE / ISO
Lens Khoom: CR39
Txheej: UC, HC, HMC
Txoj kab uas hla: 70mm
Product Detail
Khoom cim npe
Ntim & Xa
| Muag Khoom | Ua khub |
| Ib pob loj | 50 x 45 x 45 cm |
| Ib qho hnyav tag nrho | Txog 22 kgs |
| Hom pob | Sab hauv: hnab ntawv; Sab nraud: Carton;export txheem los yog raws li koj tsim |
| Lub Sijhawm Lead | Quantity (Pairs) 1 - 1000prs, 10 hnub |
| Quantity (Pairs) > 5000prs, Yuav tsum tau sib tham |
1.61 / 1.67 progressive shorter corridor 12 + 2mm optical lens
| Refractive Index | Txoj Kev Ntev | Txheej | Abbe nqi |
| 1.499 ib | D25 | UC, HC, HMC | 57 |
| Specific Gravity | Kev sib kis | Monomer | Hwj chim Range |
| 1.32 ib | > 97% | CR39 | PIB: 0.00 ~ + 3.00 ADD: + 1.00 ~ + 3.00 |
Nta.
1) Qhov nrov tshaj plaws fused bifocal niaj hnub no muaj D-zoo li nyob ze ntu tig 90 degrees kom lub tiaj tus ntawm "D" tig mus.Vim li no, D-seg bifocals kuj hu ua "flat-top" (FT) lossis "ncaj-top" (ST) bifocals.
2) Qhov no yog D ntu bifocal lens.Nws muaj cov txiaj ntsig uas qhov chaw kho qhov muag ntawm qhov ze ze ntawm qhov muag ntawm lub lens piv txwv li ib feem ntawm qhov chaw nyeem ntawv uas muab qhov pom kev zoo tshaj plaws, yog nyob rau sab saum toj ntawm qhov kev nyeem ntawv.Tsis tas li qhov dav tshaj plaws ntawm thaj chaw nyeem ntawv tsuas yog hauv qab kab sib faib, thiab yog ib feem ntawm lub lens uas tus neeg hnav yuav siv.
Qhov zoo ntawm Flat Top Lenses.
1) Qhov no yog hom lens yooj yim heev uas tso cai rau tus neeg hnav tsom mus rau cov khoom ntawm ob qho tib si nyob ze thiab deb ntawm ib lub lens.
2) Hom lo ntsiab muag no yog tsim los pab kom pom cov khoom nyob rau hauv qhov kev ncua deb, nyob ze qhov chaw thiab nyob rau hauv nruab nrab ntawm qhov kev ncua deb nrog kev hloov pauv ntawm lub zog rau txhua qhov kev ncua deb.
AR Txheej.
--HC (txheej txheej): Los tiv thaiv cov lo ntsiab muag uas tsis muaj coated los ntawm khawb kuj
--HMC (nyuaj ntau coated / AR txheej): Los tiv thaiv lub lens zoo ntawm kev xav, txhim kho kev ua haujlwm thiab kev siab hlub ntawm koj lub zeem muag
--SHMC (super hydrophobic txheej): Ua kom lub lens waterproof, antistatic, anti plam thiab roj kuj.
