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Jiangsu Aogang Optical Glasses Co., Ltd.

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Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

Product Details:

Place of Origin: China
Brand Name: Aogang Optics
Certification: CE/FDA/ISO9001
Model Number: Flat Top Bifocal Lenses

Payment & Shipping Terms:

Minimum Order Quantity: 500 pairs
Price: negotiation
Packaging Details: 1) Standard white envelope 2) color envelop with customer's design
Delivery Time: 10~30 days, depend on your quantity
Payment Terms: T/T, Western Union, L/C, D/A, D/P, MoneyGram,Paypal
Supply Ability: 40,000 pieces per day
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Detailed Product Description
Refractive Index: 1.56 Diameter: 70mm
Abbe Value: 42 Specific Gravity: 1.21
Transmission: 94% Coating: Uncoated
Guarantee Years: 3~5 Years Power Range: SPH:0.00~+-3.00, ADD:+1.00~+3.50

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:

  1. What Are Bifocal Lenses?

As their name suggests, bifocal eyeglass lenses have two lens powers — one for distance and one for near.


The lower half of a bifocal lens contains the near segment for reading and other close-up tasks. The rest of the lens is usually a distance correction, but sometimes has no correction at all in it, if you have good distance vision.


The Franklin bifocal design remained in style for more than a century. Then in the early 1900s, the invention of fused bifocals offered thinner and more attractive lenses.


In a fused bifocal, a small lens segment for near vision is attached (fused) to a full distance lens.

  1. Flat Top Lenses
Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

The most popular fused bifocal today has a D-shaped near segment rotated 90 degrees so that the flat part of the "D" is facing up. For this reason, D-seg bifocals also are called "flat-top" (FT) or "straight-top" (ST) bifocals.


Flat-top bifocals are further described by the width of the near segment, measured in millimeters (mm). The most popular FT bifocal is the FT-28, a flattop bifocal with a near seg that is 28 mm wide.


FT-28 offers a wide field of forward vision and allows the user to see objects at close  range without changing spectacles. This lens gives the wearer a wide range of long-distance  vision and, at the same time, allows viewing of objects at close range such as meters, navigation  screens and expressway tickets. This type can also be used for sports such as golf.

  1. The Advantages Of Wearing Flat Top Bifocal Lens

Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

  • Two different segment sizes to meet individual requirements
  • Reduced reflections due to curved segment top
  • Segment fusing or molding on front surface and inner toric surface design ensure excellent optical quality and cosmetically attractive lenses
  • Wide selection available: various material, photochromic bifocal lenses and sunglass lenses
  • Aogang bifocals are made from one of the highest quality materials, in Uncoated, Hard-Coated and Hard-Multi-Coated varieties.


III. Technical Data:


Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission


IV. Packing&Shipping:


Envelops   1) standard white envelop

  2) color envelop with customer design
      weight: 157g size: 9*9*9cm

Outer box   standard export paper carton 38cm*48cm*35cm ( 0.064 CBMS )
  Include around 500 pairs of finished lenses, 21kgs
  Include around 100 pairs of semi finished lenses, 15kgs


Shipping Samples   By Fedex, DHL, UPS, TNT etc.
  Delivery time: within 3 days
Batch goods   By air, sea, express
  Delivery time: 10-30 days, depend on your quantity
Carrier   We can choose for you or offer us your cooperative company
Payment terms

  30% T/T in advance, the balance before shippment

Why Choose Us:


Middle Index 1.56 Flat Top Bifocal Lenses For Presbyopes 94% Transmission

1. About Us

Jiangsu Aogang Optical Glasses Co.,Ltd is a professional optical lens manufacturer for more than 10 years in China. All lenses are exported to European countries, Japan, Korea, North and South America, Middle East, Southeast Asia and Africa market. We guarantee the quality to all buyers all over the world, and got a high reputation about quality from buyers in the past 8 years exporting time. Our producing process is in vacuum dust-free shop, like prepare material, mixed material and take out .Four times quality checking during production process. In Aogang Optical, you can find high quanlity lenses with the most competitive prices.


2. Samples

Just send us your requirements, then we will send samples accordingly. We only need 1~2 days to finish the sample production. Samples are free, but according to our company rule, our customers need to assume the shipping cost.

Contact Details
Jiangsu Aogang Optical Glasses Co., Ltd.

Contact Person: Irene Wang

Tel: +8615896369076

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Jiangsu Aogang Optical Glasses Co., Ltd.
East of Nongangxiao, Situ Town, Danyang City, Jiangsu Province, China
China Good Quality Prescription Eyeglass Lenses Supplier. Copyright © 2018 - 2019 All Rights Reserved.