bifocal flat-top round-top lense

Flat-top/Round-top Bifocal Lense


Lintlha tsa Sehlahisoa

Li-tag tsa Sehlahisoa

Lense ea bifocal e ka bitsoa lense ea merero e mengata.E na le likarolo tse 2 tse fapaneng tsa pono ka lense e le 'ngoe e bonahalang.Lense e kholoanyane hangata e na le lengolo la ngaka le hlokahalang hore u bone hole.Leha ho le joalo, sena e ka boela ea e-ba lengolo la ngaka la hau bakeng sa tšebeliso ea k'homphieutha kapa sebaka se mahareng, kaha ka tloaelo u tla be u sheba ka ho toba ha u sheba ka karolo ena ea lense. Karolo e ka tlaase, eo hape e bitsoang fensetere, hangata e na le lengolo la hau la ho bala.Kaha ka kakaretso u sheba fatše ho bala, mona ke sebaka se utloahalang sa ho beha mefuta ena ea thuso ea pono.

Monyetla oa lense e bataletseng ea bifocal.
1.Ena ke mofuta o bonolo haholo oa lense o lumellang motho ea apereng ho tsepamisa maikutlo linthong tse haufi le tse hole ka lense e le 'ngoe.
2. Mofuta ona oa lense o etselitsoe ho nolofalletsa ho shebella lintho tse hole, haufi le sebaka se bohareng ka liphetoho tse tsamaellanang tsa matla sebakeng se seng le se seng.
Melemo ea li-round-top bifocals
1.Basebelisi ba ka bona lintho tse haufi ka sebopeho se chitja le ho bona bohole ba lintho ka lilense tse ling.
2.Basebelisi ha ba hloke ho fetola likhalase tse peli tse fapaneng tsa pono ha ba bala buka le ho shebella TV.
3.Ba apereng ba ka boloka boemo bo tšoanang ha ba shebahala ka bobeli ntho e haufi kapa ntho e hole.
Haeba u ananela boleng, tshebetso le popontshwa o fihlile sebakeng se nepahetseng.
bifocal flat-top round-top lense

Index&Material a Fumaneha

Lintho tse bonahalangLintho tse bonahalang NK-55 Polycarbonate MR-8 MR-7 MR-174
imhRefractive Index 1.56 1.59 1.60 1.67 1.74
AbbeBoleng ba Abbe 35 32 42 32 33
SpecMatla a Khoheli a khethehileng 1.28g/cm3 1.20g/cm3 1.30g/cm3 1.36g/cm3 1.46g/cm3
UVUV Block 385nm 380nm 395nm 395nm 395nm
MoraloMoralo SPH SPH SPH/ASP ASP ASP

Bifocal lens e sebetsa joang?
Lilense tsa bifocal li nepahetse bakeng sa batho ba nang le presbyopia - boemo boo ho bona motho a bonang lerootho kapa a sothehileng haufi le pono ha a ntse a bala buka.Ho lokisa bothata bona ba pono e hole le e haufi, ho sebelisoa lilense tsa bifocal.Li na le likarolo tse peli tse fapaneng tsa tokiso ea pono, tse khetholloang ka mola ho pholletsa le lilense.Sebaka se ka holimo sa lense se sebelisetsoa ho bona lintho tse hole ha karolo e ka tlase e lokisa pono e haufi.
sephara


  • E fetileng:
  • E 'ngoe: