Ultra Thin High Index 1.74 Lens
Kodi High Index 1.74 Lens ndi Chiyani?
Ngati Muli ndi Dongosolo Lamphamvu Kwambiri, Muyenera Kuganizira Magalasi a Ultra Thin High Index 1.74.
Ma lens a High Index 1.74 ndi mandala owonda kwambiri, osalala, komanso owoneka bwino kwambiri omwe adapangidwapo.
Magalasi owonda kwambiri awa ndi pafupifupi 40% owonda kuposa pulasitiki ndipo 10% owonda kuposa magalasi apamwamba a 1.67, akukupatsirani ukadaulo ndi zodzoladzola. Magalasi ocheperako amakhala okongoletsedwa kwambiri, amachepetsa kupotoza komwe kumayambitsa ma lens apamwamba akapangidwa ndi magalasi apamwamba kwambiri.
Ndiyenera kusankha makulidwe anji a lens?
Ngati muli odziletsa, kapena osaona mwachidule mudzapindula ndi magalasi opyapyala chifukwa makulidwe a m'mphepete mwa magalasi anu amawonekera kwambiri.
Magalasi okhala ndi refractive index ya 1.6 ndi abwino kwa mankhwala omwe mtengo wamankhwala anu a SPH uli pakati pa -2.50 ndi -4.00.
Pakati pa -4.00 ndi -6.00 tingapangire lens yokhala ndi refractive index ya 1.67, ndipo zolemba zilizonse pamwamba pa mandala omwe ali ndi refractive index of 1.74 adzakhala abwino kwambiri.
Ngati mankhwala anu apitirira -5.00 tidzafunika kuyeza kolondola kwa mtunda pakati pa ana anu, omwe nthawi zambiri amatchedwa PD.
Chifukwa magalasi amtali ndi afupiafupi amasiyana, pali malingaliro osiyanasiyana pa chilichonse.
Ma lens a Hi-index 1.74 ndi abwino kwa
1. Yoyenera kulembedwa kwamphamvu kwambiri mumitundu +10.00 mpaka -10.00
2. Osavomerezeka magalasi opanda malire kapena opanda malire
3. Kukhalitsa kwakanthawi kokhazikika
4. Mwapadera kuwala Kumveka
5. 50% kuchepetsa makulidwe
6. 30% kuchepetsa kulemera
7. Yoyenera mafelemu akuluakulu akuluakulu
