Flat Top Bifocal Lenses

AR Coating 1.56 FT-28 Semi Finished Lens Blanks With Anti-reflection Coating For Bifocal Vision I. Technical Data: 1.56 Semi Finished Photochromic FT-28 Lens Material: 1.56 Index Resin(Ne=1.56, Abbe=43, Specific Gravity=1.14) Segment Placement=5mm down~5mm in Add Power: +1.00 to +3.50 in 0.25D steps Segment Size=28mm CONVEX SURFACE CONCAVE SURFACE Mominal Curve True Curve Sag (sagitta: 40mm) Radius Radius CT(mm) ET(mm) Dia(mm) 1.549 2.00 70 4.00 4.17 1.50 131.74 132.50 8.0 8

SF CR39 1.499 Uncoated Flat Top Bifocal Lenses In Semi Finished Lens Blanks For Far And Near Vision I. Technical Data: 1.499 S/F FLAT TOP BIFOCAL BLANKS MARTERIAL REFRACTIVE INDEX=1.499 TOOLING INDEX=1.530 Diameter(mm) Nominal Curve Front Radius T.C Back Radius BACK T.C CT/ET Frong sag Ring 50mm RX Range Recommended ɸ70 200B 234.27 2.26 94.93 5.58 10.0/14.0 1.34 -5.25Dto-8.00D ɸ70 400B 127.62 4.15 94.93 5.58 10.0/12.0 2.47 +2.00Dto-5.00 ɸ70 600B 87.18 6.08 161.04 3.29 9.0/6.0

28mm Segment 1.56 NK55 Uncoated Flat Top Bifocal Lenses For Varifocal Vision I. Specifications: Refractive Index: 1.56 Monomer: NK55, imported from Japan Abbe Value: 40 Specific Gravity: 1.20 Transmission: 96% Coating: uncoated Diameter: 70mm Flat Top Segment: 28mm Power Range: SPH:0.00~+3.00,0.00~-3.00,CYL:+1.00~+3.50 II. Flat Top Bifocal Lenses: Why Need The Bofical Lenses? The aging process includes changes in vision that makes everyday reading more difficult than usual

Middle-Index 1.56 Flat-Top Uncoated Prescription Bifocal Lenses For Presbyopes I. Specifications: Refractive Index Monomer Place Of Origin Brand 1.56 NK55, imported from Japan China Aogang Abbe Value Specific Gravity Transmission Coating 42 1.21 94% uncoating Diameter Flat Top Segment Power Range 70mm 28mm SPH:0.00~+3.00,0.00~-3.00,CYL:+1.00~+3.50 II. Flat Top Bifocals: What Are Bifocal Lenses? As their name suggests, bifocal eyeglass lenses have two lens powers — one for

CR39 1.499 Flat-top White Prescription Optical Lenses Without Coating For Bifocal Vision I. Specifications: Production 1.499 FT-28 UC LENS Monomer CR39 Diameter 70mm Abbe Value 57 Specific Gravity 1.33 Transmission >96% Flat top segment 28mm Guarantee years 3~5 years Power range SPH: 0.00~+-3.00 ADD: +1.00~+3.50 II. Flat Top Bifocal Lens: Bifocals in General Bifocals have the unique ability to give two lens powers so that you can see both near and far. The bottom portion of

White Coating 1.56 Flat-top Uncoated Prescription Eyeglass Lenses For Bifocal Vision I. Specifications Transmission Diameter Refractive index Abbe value Specific Gravity 98% 70mm 1.56 38 1.21 Coating Guarantee years Power range Place of origin Brand UC 5 Years SPH:000~+300,000~-300,CYL:+100~+350 China Aogang II. Features 1) The advantages of the 1.56 Lenses with a 1.56 index are considered the most cost effective lens on the market. They possess 100% UV protection and are 22%

Uncoated 1.499 Flat-top UC Prescription Eyeglass Lenses For Far And Near Vision I. Specifications Production 1.499 FT-28 UC Monomer CR39 Diameter 70MM Abbe value 58 Specific Gravity 1.32 Transmission >97% Flat top segment 28 Guarantee years 5 years Power range SPH: 0.00~+-20.00 CYL: 0.00~-6.00 II. Features ● Why need the bofical lenses? The aging process includes changes in vision that makes everyday reading more difficult than usual because of the loss of one’s ability to

1.56 Flat-top Bifocal AR Coating Semi Finished Lens Blanks For Near And Far Vision I. Technical Data: 1.56 Semi Finished Flat Top Bifocal Lens Blanks Material: 1.56 Index NK55 Resin(Ne=1.549, Abbe=38, Specific Gravity=1.28) Segment Placement: 5mm down -5mm in Add Power: +1.00 to +3.50 in 0.25D steps Segment Size: 28mm CONVEX SURFACE CONCAVE SURFACE Mominal Curve True Curve Sag(sagitta: 40mm) Sag(sagitta: 50mm) Radius Radius CT(mm) ET(mm) Dia(mm) 1.549 1.530 4.25 4.18 4.04 1

CR39 1.499 Uncoated Flat Top Bifocal Lenses In Semi Finished Lens Blanks I. Technical Data: 1.499 S/F FLAT TOP BIFOCAL BLANKS MARTERIAL REFRACTIVE INDEX=1.499 TOOLING INDEX=1.530 Diameter(mm) Nominal Curve Front Radius T.C Back Radius BACK T.C CT/ET Frong sag Ring 50mm RX Range Recommended ɸ70 200B 234.27 2.26 94.93 5.58 10.0/14.0 1.34 -5.25Dto-8.00D ɸ70 400B 127.62 4.15 94.93 5.58 10.0/12.0 2.47 +2.00Dto-5.00 ɸ70 600B 87.18 6.08 161.04 3.29 9.0/6.0 3.66 0.00Dto+4.00D ɸ70

No Coating 1.56 Flat-top Uncoated Prescription Eyeglass Lenses For Bifocal Visions I. Specifications: Transmission Diameter Refractive index Abbe value Specific Gravity 98% 70mm 1.56 38 1.21 Coating Guarantee years Power range Place of origin Brand UC 5 Years SPH:000~+300,000~-300,CYL:+100~+350 China Aogang II. Features: -------1.56 middle index series lenses are one of the most popular lenses all over the world. This determines that Aogang 1.56 single vision lenses have the

CR39 White 1.499 Flat-top Uncoated Prescription Eyeglass Lenses For Bifocal Vision Without coating I. Specifications: Production 1.499 FT-28 UC Monomer CR39 Diameter 70MM Abbe value 58 Specific Gravity 1.32 Transmission >97% Flat top segment 28 Guarantee years 5 years Power range SPH: 0.00~+-20.00 CYL: 0.00~-6.00 II. Features: ● CR-39 lenses use the imported CR-39 raw monomer, which is one of the longest history of resin materials and the most widely sold lens in middle level

CR39 1.499 Non-coating Flat Top Bifocal Spectacle Lenses For Far And Near Vision I. Specification: Index 1.499 Diameter 70mm Monomer CR39 Abbe Value 56 Flat Top Segment 28mm Specific Gravity 1.34 Transmission 97% Guarantee 3~5 years SPH 0.00~+-3.00 ADD +1.00~+3.50 II. Flat Top Bifocals: Flat Top 28 Bifocal Lenses A flat top 28 bifocal lens is offers correction for both near and far distances. It is a multifocal lens commonly prescribed for those suffering from both presbyopia