Tel:
China Prescription Eyeglass Lenses manufacturer
Jiangsu Aogang Optical Glasses Co., Ltd.

Bring the clear world back to you

Home ProductsFlat Top Bifocal Lenses

1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

    • 1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank
    • 1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank
  • 1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

    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: 100 pairs
    Price: negotiation
    Packaging Details: 1) Standard white envelope 2) color envelop with customer 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
    Contact Now
    Detailed Product Description
    Index: 1.56 Diameter: 70mm
    Segment: 28mm Abbe Value: 43
    Specific Gravity: 1.14 Coating: HMC EMI
    Base: 2/4/6/8 ADD: +1.00~+3.50

    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

    1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

     

    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 8.0
    6.00 6.35   2.30 86.45 88.80 8.0 7.0
    8.00              

     

    II. Semi finished lens:

     

    What is the semi finished lens?

     

    1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

    The starting point for freeform production is a semi-finished lens, also known as a puck due to its resemblance to an ice hockey puck. These are produced in a casting process that is also used to manufacture stock lenses. The semi-finished lenses are produced in a casting process. Here, liquid monomers are first poured into moulds. Various substances are added to the monomers, e.g. initiators and UV absorbers. The initiator triggers a chemical reaction that leads to hardening or "curing" of the lens, while the UV absorber increases the UV absorption of the lenses and prevents yellowing.

     

    III. FT-28 optical lenses:

     

    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 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.

     

    2) This is a D segment bifocal lens. It has the benefit that the optical centre of the near vision part of the lens i.e. the part of the reading area which gives the very best vision, is situated at the top of the reading portion. Also the widest part of the reading area is just below the dividing line, and is the part of the lens the wearer would use.

    1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

     

    IV. AR coating:

     

    The coating used and the curved nature of lenses mean that up to 10% of light can be lost through reflections at the lens surfaces, these reflections can be distracting and appear unattractive.

    By adding a coating it allows around 99% of light through the lens resulting in increased visual comfort and performance.

     

    1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank
     

    V. Packing:

     

    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

     

     

     

    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

     

     

    VI. Why choose us:

     

    1.56 FT-28 Antireflective Lenses Blanks , Bifocal Vision AR Coated Lenses Blank

    1. Our Factory: 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. In Aogang Optical, you can find high quanlity lenses with the most competitive prices.

     

    2. Our Samples: We provide free samples. Just send us your requirements, then we will send samples accordingly. However, according to our company rule, our customers need to assume the shipping cost.

     

    3. Payment Term: 30% T/T in advance, the balance before shippment

     

    4. Our Service: Our customer service begins tracking the processing status of products daily until you receive the product and confirm the quality.You could contact us by SKYPE,Whatsapp, e-mail, voice phone, message at any time!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.

    Contact Details
    Jiangsu Aogang Optical Glasses Co., Ltd.

    Contact Person: Yang Lee

    Tel: +8613952827279

    Send your inquiry directly to us (0 / 3000)

    Jiangsu Aogang Optical Glasses Co., Ltd.
    East of Nongangxiao, Situ Town, Danyang City, Jiangsu Province, China
    Tel:86-511-86550315-9:00~17:00
    China Good Quality Prescription Eyeglass Lenses Supplier. Copyright © 2018 - 2019 prescription-eyeglasslenses.com. All Rights Reserved.