SETO 1.499 Semi Finished Round sab saum toj bifocal lens
Specification
1.499 round-sab saum toj semi-tiav optical lens | |
Qauv: | 1.499 optical lens |
Qhov Chaw Keeb Kwm: | Jiangsu, Suav teb |
Hom Tshuaj: | SETO |
Lenses Khoom: | Resin |
Khoov | 200B/400B/600B/800B |
Muaj nuj nqi | puag ncig-saum |
Lenses Xim | Ntshiab |
Refractive Index: | 1.499 ib |
Txoj kab uas hla: | 70/65 ib |
Abbe Tus nqi: | 58 |
Specific Gravity: | 1.32 ib |
Kev xa tawm: | > 97% |
Txheej Txheej: | UC/HC/HMC |
Txheej xim | Ntsuab |
Khoom nta
1) Dab tsi yog qhov tseem ceeb ntawm lub lens zoo semi-tiav rau RX ntau lawm?
ib.High tsim nyog tus nqi nyob rau hauv lub hwj chim raug thiab stability
b.Kev tsim nyog tus nqi hauv cov tshuaj pleev ib ce zoo
c.High optical nta
d.Cov teebmeem tinting zoo thiab cov txheej txheem nyuaj / AR txheej
e.Paub txog qhov muaj peev xwm ntau lawm
f.Kev xa tuaj raws sijhawm
Tsis yog tsuas yog qhov zoo tshaj plaws, cov lo ntsiab muag semi-tiav yog tsom rau ntawm qhov zoo ntawm sab hauv, xws li qhov tseeb thiab ruaj khov, tshwj xeeb tshaj yog rau lub lens nrov dawb.
2) Bifocal Lenses yog dab tsi?
Bifocals yog ob daim ntawv sau ua ke rau hauv ib lub lens.
Bifocals tau pib los ntawm Benjamin Franklin nyob rau hauv lub xyoo pua 18th thaum nws txiav ib nrab ntawm ob spectacle lo ntsiab muag thiab haum rau hauv ib lub thav duab.
Bifocals xav tau vim tias cov tsom iav nyob deb tsis txaus los tsom kom txaus rau ze.Raws li lub hnub nyoog nce, cov tsom iav nyeem ntawv yuav tsum tau nyeem ntawm qhov chaw yooj yim.Tsis yog tshem tawm cov tsom iav nyob deb thiab muab tso rau ntawm tsom iav ze txhua lub sijhawm, tus neeg uas xav ua haujlwm ntawm qhov ze ze tuaj yeem siv ntu qis dua.
Muaj ntau hom bifocals muaj, los ntawm puag ncig-sab saum toj bifocal, flat-top bifocal mus rau cov thawj coj bifocal.
3) Qhov txawv ntawm HC, HMC thiab SHC yog dab tsi?
Txheej tawv | AR txheej / Hard txheej txheej | Super hydrophobic txheej |
ua rau lub lens uncoated nyuaj thiab tsub kom lub abrasion kuj | tsub kom lub transmittance ntawm lub lens thiab txo cov reflections nto | ua rau lub lens waterproof, antistatic, anti plam thiab roj kuj |